[![Logo](https://www.paloaltonetworks.com/wp-content/uploads/2021/07/PANW_Parent.png)](https://www.paloaltonetworks.com/) [![Unit42 Logo](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/unit42-logo-white.svg)](https://unit42.paloaltonetworks.com/) Menu * [Tools](https://unit42.paloaltonetworks.com/tools/) * [ATOMs](https://unit42.paloaltonetworks.com/atoms/) * [Security Consulting](https://www.paloaltonetworks.com/unit42) * [About Us](https://unit42.paloaltonetworks.com/about-unit-42/) * [**Under Attack?**](https://start.paloaltonetworks.com/contact-unit42.html) English * [English](https://unit42.paloaltonetworks.com/malicious-javascript-injection/) * [Japanese](https://unit42.paloaltonetworks.com/ja/malicious-javascript-injection/) * [Threat Research Center](https://unit42.paloaltonetworks.com "Threat Research") * [Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/ "Threat Research") * [Malware](https://unit42.paloaltonetworks.com/category/malware/ "Malware") [Malware](https://unit42.paloaltonetworks.com/category/malware/) # Malicious JavaScript Injection Campaign Infects 51k Websites ![Clock Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-clock.svg) 7 min read Related Products [![Advanced DNS Security icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/strata_RGB_logo_Icon_Color.png)Advanced DNS Security](https://unit42.paloaltonetworks.com/product-category/advanced-dns-security/ "Advanced DNS Security")[![Advanced URL Filtering icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/strata_RGB_logo_Icon_Color.png)Advanced URL Filtering](https://unit42.paloaltonetworks.com/product-category/advanced-url-filtering/ "Advanced URL Filtering")[![Cloud-Delivered Security Services icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/strata_RGB_logo_Icon_Color.png)Cloud-Delivered Security Services](https://unit42.paloaltonetworks.com/product-category/cloud-delivered-security-services/ "Cloud-Delivered Security Services")[![Next-Generation Firewall icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/strata_RGB_logo_Icon_Color.png)Next-Generation Firewall](https://unit42.paloaltonetworks.com/product-category/next-generation-firewall/ "Next-Generation Firewall") * ![Profile Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-profile-grey.svg) By: * [Shehroze Farooqi](https://unit42.paloaltonetworks.com/author/shehroze-farooqi/) * [Billy Melicher](https://unit42.paloaltonetworks.com/author/billy-melicher/) * [Brody Kutt](https://unit42.paloaltonetworks.com/author/brody-kutt/) * [Alex Starov](https://unit42.paloaltonetworks.com/author/alex-starov/) * ![Published Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-calendar-grey.svg) Published:March 23, 2023 * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-category.svg) Categories: * [Malware](https://unit42.paloaltonetworks.com/category/malware/) * [Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-tags-grey.svg) Tags: * [Deep learning](https://unit42.paloaltonetworks.com/tag/deep-learning/) * [JavaScript Malware](https://unit42.paloaltonetworks.com/tag/javascript-malware/) * [Malicious injection attack](https://unit42.paloaltonetworks.com/tag/malicious-injection-attack/) * [Obfuscation](https://unit42.paloaltonetworks.com/tag/obfuscation/) * [![Download Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-download.svg)](https://unit42.paloaltonetworks.com/malicious-javascript-injection/?pdf=download&lg=en&_wpnonce=fafa58d2d0 "Click here to download") * [![Print Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-print.svg)](https://unit42.paloaltonetworks.com/malicious-javascript-injection/?pdf=print&lg=en&_wpnonce=fafa58d2d0 "Click here to print") Share![Down arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/down-arrow.svg) * ![Link Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-share-link.svg) * [![Link Email](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-sms.svg)](mailto:?subject=Malicious%20JavaScript%20Injection%20Campaign%20Infects%2051k%20Websites&body=Check%20out%20this%20article%20https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F "Share in email") * [![Facebook Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-fb-share.svg)](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F "Share in Facebook") * [![LinkedIn Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-linkedin-share.svg)](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F&title=Malicious%20JavaScript%20Injection%20Campaign%20Infects%2051k%20Websites "Share in LinkedIn") * [![Twitter Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-twitter-share.svg)](https://twitter.com/intent/tweet?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F&text=Malicious%20JavaScript%20Injection%20Campaign%20Infects%2051k%20Websites "Share in Twitter") * [![Reddit Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-reddit-share.svg)](https://www.paloaltonetworks.com//www.reddit.com/submit?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F&ts=markdown "Share in Reddit") * [![Mastodon Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-mastodon-share.svg)](https://mastodon.social/share?text=Malicious%20JavaScript%20Injection%20Campaign%20Infects%2051k%20Websites%20https%3A%2F%2Funit42.paloaltonetworks.com%2Fmalicious-javascript-injection%2F "Share in Mastodon") ## **Executive Summary** Unit 42 researchers have been tracking a widespread malicious JavaScript (JS) injection campaign that redirects victims to malicious content such as adware and scam pages. This threat was active throughout 2022 and continues to infect websites in 2023. We detected the injected JS code on more than 51,000 websites, including hundreds of websites in Tranco's top 1 million website ranking list. The presence of affected websites in Tranco indicates that this campaign could have impacted a large number of people. We also found that this campaign is multifaceted in that it performs multistep injections before redirecting to malicious web pages, and uses obfuscation and benign append attacks to bypass detections. Malware authors leverage these techniques to inject multiple variants of malicious JS code samples into the websites. Our novel adversarial deep learning technique, Innocent Until Proven Guilty ([IUPG](https://unit42.paloaltonetworks.com/benign-append-attacks-iupg/)), detected multiple variants of the injected JS code. This model is part of the Advanced URL Filtering (AUF) subscription of our Next-Generation Firewall offering. It detects malicious JS samples and classifies content from both our offline crawlers as well as inline protection, which performs a real-time analysis of traffic on the firewall. | **Related Unit 42 Topics** | [**JavaScript Malware**](https://unit42.paloaltonetworks.com/tag/javascript-malware) | |----------------------------|--------------------------------------------------------------------------------------| ## Campaign Activity and User Impact We have detected numerous variants of a campaign where attackers inject malicious JS code into websites. This injected code redirects victims to a variety of malicious content, such as adware and scams. A [similar campaign was reported by researchers last year](https://blog.sucuri.net/2022/05/massive-wordpress-javascript-injection-campaign-redirects-to-ads.html). We observed the first instance of the campaign in 2020. However, we will focus on the most recent variants of this campaign tracked between January 2022-23. We detected this campaign on an estimated 170,000 URLs from 51,000 hostnames, since the beginning of 2022. As shown in Figure 1, the campaign remained active throughout the past year and continues to impact websites in 2023.This campaign peaked between May-August 2022, when we saw an average of 4,000 daily URLs. ![Image 1 is a graph of the campaign activity starting in January 2022 and ending in January 2023. The activity peaked in May through August of last year, with an average of 4,000 daily URLs.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-1.png) Figure 1. Graph of the campaign throughout 2022 and the beginning of 2023 peaking between May-August 2022. We suspect that this campaign has impacted a large number of people, since hundreds of these infected websites were ranked in [Tranco's top million websites](https://tranco-list.eu/) at the time of writing. During January 2023, we blocked an estimated 240,000 sessions from these websites across 14,773 devices. ## Examples of JS Injections This malicious JS injection campaign uses various techniques to bypass detection, such as obfuscation, appending code to large benign files and multistep injections. We will share examples of malicious JS code that the campaign operators obfuscated and concealed in larger JS files. We will also share an example in which the malware performs a series of JS injections before finally loading the payload. ### Obfuscation Figures 2a, b and c show examples of commonly detected JS snippets from the campaign. In all these examples, the injected JS code was obfuscated to hide the malicious payload to bypass detection. Specifically, this obfuscated code hides the external URL used to load the malicious JS. The code also includes the behavior of dynamically adding the malicious JS to the document object model (DOM). For example, the first two JS code snippets below (Figures 2a and b) hide the link to malicious JS using String.fromCharCode, which is a common obfuscation technique. Figure 2c shows another example of obfuscation. The obfuscated code is displayed on the left and deobfuscated code on the right. The name of the function call (such as fromCharCode) was obfuscated by using their hexadecimal representation in the variable \_0xfcc4. ![Image 2 is many lines of code showing how the malicious JavaScript links are hidden using String.fromCharCode.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-2.png) Figure 2a. Example of hiding links to malicious JS using String.fromCharCode. ![Image 3 is many lines of code showing how the malicious JavaScript links are hidden using String.fromCharCode.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-3.png) Figure 2b. Example of hiding links to malicious JS using String.fromCharCode. ![Image 4 is two segments of code shown side by side. Between them is an arrow pointing to the right titled “Deobfuscation.” On the left is the obfuscated function calls, and on the right shows the function call after deobfuscation.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-4.png) Figure 2c. Example of hiding the name of the function calls. The left side of the image shows how function calls are obfuscated using their hexadecimal representations in the variable \_0xfcc4. The right side of the image shows the function call fromCharCode after deobfuscation. ### Appending JS Code to Large Files We found examples of these obfuscated JS snippets injected into common utility JS files (e.g., jQuery) on some websites. Malware authors often use this strategy to append malicious code to large blocks of benign code, which is also known as a benign append attack. This technique can help malware authors evade detection by security crawlers. The examples we saw of injected malicious JS code in large JS files are similar to the live detection examples of benign append attacks presented in our previous blog post, "[The Innocent Until Proven Guilty Learning Framework Helps Overcome Benign Append Attacks](https://unit42.paloaltonetworks.com/benign-append-attacks-iupg/)." ### Multistep JS Injections The injected JS code in all of the JS code snippets (shown in Figures 2a, b and c) appends external malicious JS code by manipulating the DOM. This gives the attacker the ability to change the malicious payload. A more recent variant of this campaign injects malicious JS code onto a website. It then performs a series of intermediate JS injections before loading a payload that redirects victims to a malicious webpage. Figure 3 shows an example where each injected JS code sequentially executes JS code from another website before dropping a malicious payload. One reason for including JS injections from different websites could be that attackers want to keep changing the URL that loads the final payload, in case the URL loading JS is blacklisted by security crawlers. ![Image 5 is a tree diagram. It starts with the JavaScript injection on a website. Next is the multistep script injections. The last part is the final redirection payload.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-5.png) Figure 3. An example of a script injection on a website that performs a series of intermediate script injections before finally loading a payload that redirects to a malicious web page. ## Redirection to Malicious Content The final payload redirects users to different websites before landing on the final webpage, which is typically adware or a scam page. For example, a person could be redirected to a fake notification scam page, as shown in Figure 4a. On this page, people are shown deceptive content that can trick them into allowing an attacker-controlled website to send browser notifications. ![Image 6 is a screenshot of a website with a fake CAPTCHA image where the user clicks on a robot to allow notifications requested in a popup.](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-6.png) Figure 4a. Fake CAPTCHA image is shown to lure people into allowing the website to send notifications. In another example, shown in Figure 4b, the final malicious web page shows deceptive content in the form of a fake warning from a look-alike page of a well known video sharing platform. This deceptive content could lure people into downloading a fake browser. ![Image 7 is a screenshot of an imitation of a well-known video-sharing platform. There is a popup of a fake warning for a browser recommendation with the option “Download and Install Now.”](https://unit42.paloaltonetworks.com/wp-content/uploads/2023/03/word-image-127351-7.png) Figure 4b. Look-alike page of a well-known video sharing platform is shown with a fake warning, to lure people into downloading a fake browser. ## How the JS Was Injected on Websites Unit 42 researchers suspect that a large number of websites could be compromised due to one or more vulnerable content management system (CMS) plugins. The exploitation of CMS plugins for a similar campaign was [reported by Sucuri researchers](https://blog.sucuri.net/2022/05/massive-wordpress-javascript-injection-campaign-redirects-to-ads.html). We also found that an estimated three quarters of the detected websites (out of 51,000) were using a popular CMS. The injected malicious JS code was included on the homepage of more than half of the detected websites. One common tactic used by the campaign's operators was to inject malicious JS code on frequently used JS filenames (e.g., jQuery) that are likely to be included on the homepages of compromised websites. This potentially helps attackers target the website's legitimate users, since they are more likely to visit the website's home page. ## Detecting Malicious JS injections With Deep Learning Malware authors constructed different variants of the malicious JS code that was injected into websites for this campaign. Deep learning techniques are commonly known to be robust at detecting different variants of the same attack. Therefore, deep learning techniques could increase the coverage of malicious JS injections. Deep learning techniques can also be resistant to adversarial evasion attempts from the malware. One specific example of these types of adversarial evasions is a pervasive black box adversarial threat called [benign append attacks](https://unit42.paloaltonetworks.com/benign-append-attacks-iupg/). ## Conclusion A widespread malicious JavaScript injection campaign was detected on more than 51,000 websites throughout 2022 and early 2023. We found that malware authors obfuscate malicious JS to bypass detection and perform multistep injections before redirecting to malicious web pages. The injected JS code has potentially impacted a large number of internet users since hundreds of the infected websites were ranked among the Tranco top 1 million websites. We recommend that website owners and customers keep third-party plugins and software updated to protect their websites from such injections. The injected malicious JS code in this campaign is one common example of append attacks that we see in the wild. The training procedure of our [IUPG model](https://unit42.paloaltonetworks.com/benign-append-attacks-iupg/) is specifically designed to identify and isolate malicious subpatterns in a background of benign content, as explained in our work on the IUPG model [published in IEEE Security and Privacy Workshops](https://ieeexplore.ieee.org/abstract/document/9474279) (SPW). Our deep learning model Innocent Until Proven Guilty ([IUPG](https://unit42.paloaltonetworks.com/benign-append-attacks-iupg/)) detected multiple variants of the injected malicious JS code. This model is part of one of the detection capabilities of the Advanced URL Filtering cloud-delivered security service that detects malicious JS samples. It also classifies content from both our offline crawlers as well as inline, real-time analysis of traffic on the firewall. Next-Generation Firewall customers who use [Advanced URL Filtering](https://docs.paloaltonetworks.com/advanced-url-filtering/administration) and [DNS Security](https://docs.paloaltonetworks.com/dns-security) subscriptions are protected against known URLs and hostnames of the malicious JS injection campaign described in this blog. We are also providing a link to [known indicators of compromise](https://github.com/pan-unit42/iocs/blob/master/IOCs_MaliciousJS.txt) to help combat the threats discussed in this post. *Updated March 24, 2023, at 9:01 a.m. PT.* Back to top ### Tags * [Deep learning](https://unit42.paloaltonetworks.com/tag/deep-learning/ "deep learning") * [JavaScript Malware](https://unit42.paloaltonetworks.com/tag/javascript-malware/ "JavaScript Malware") * [Malicious injection attack](https://unit42.paloaltonetworks.com/tag/malicious-injection-attack/ "malicious injection attack") * [Obfuscation](https://unit42.paloaltonetworks.com/tag/obfuscation/ "obfuscation") [Threat Research Center](https://unit42.paloaltonetworks.com "Threat Research") [Next: Unit 42 Ransomware and Extortion Report Highlights: Multi-Extortion Tactics Continue to Rise](https://unit42.paloaltonetworks.com/multi-extortion-rise-ransomware-report/ "Unit 42 Ransomware and Extortion Report Highlights: Multi-Extortion Tactics Continue to Rise") ### Table of Contents * ### Related Articles * [Token Jacking: Cybercriminals Could Be Stealing Your AI Resources](https://unit42.paloaltonetworks.com/ai-token-jacking/ "article - table of contents") * [The Xcode Assassin Returns: A Deep Dive Into the Latest XCSSET Version](https://unit42.paloaltonetworks.com/xcsset-v40-malware-analysis/ "article - table of contents") * [Russian Global Webmail Espionage](https://unit42.paloaltonetworks.com/russian-webmail-espionage/ "article - table of contents") ## Related Malware Resources ![Pictorial representation of attackers using AI tools to target Latin American organizations. A vibrant cityscape with silhouettes of numerous people walking along a bustling street. The scene is illuminated by bright urban lights and digital-like particles, creating a dynamic and futuristic atmosphere.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/AdobeStock_768915868-2-1-786x373.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) September 3, 2026 [#### Attackers Expose Ongoing AI Tool Use Targeting Organizations in Latin America](https://unit42.paloaltonetworks.com/ai-tool-use-targeting-latam-orgs/) * [Agentic AI](https://unit42.paloaltonetworks.com/tag/agentic-ai/ "Agentic AI") * [ChatGPT](https://unit42.paloaltonetworks.com/tag/chatgpt/ "ChatGPT") * [CL-CRI-1131](https://unit42.paloaltonetworks.com/tag/cl-cri-1131/ "CL-CRI-1131") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ai-tool-use-targeting-latam-orgs/ "Attackers Expose Ongoing AI Tool Use Targeting Organizations in Latin America") ![Pictorial representation of vishing campaigns in Microsoft Teams. A digital image of a skull formed by blue binary code on a black background, with scattered ones and zeros and digital noise, symbolizes how stealthy prompt injection attacks can exploit AI logic to bypass security controls.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/01_Malware_Category_1920x900-5-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 31, 2026 [#### Spring Ring: An Inside Look at Voice Phishing Campaigns in Microsoft Teams](https://unit42.paloaltonetworks.com/spring-ring-voice-phishing-campaigns/) * [Cloaked Ursa](https://unit42.paloaltonetworks.com/tag/cloaked-ursa/ "Cloaked Ursa") * [Entra ID](https://unit42.paloaltonetworks.com/tag/entra-id/ "Entra ID") * [Microsoft Teams](https://unit42.paloaltonetworks.com/tag/microsoft-teams/ "Microsoft Teams") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/spring-ring-voice-phishing-campaigns/ "Spring Ring: An Inside Look at Voice Phishing Campaigns in Microsoft Teams") ![Pictorial representation of AI-enabled malware. A vibrant digital interface displaying various icons and graphs, resembling a futuristic network or data analysis dashboard. The scene is illuminated with glowing lights and patterns.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/AdobeStock_1270203474-2-1-786x368.png) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 25, 2026 [#### The State of AI-Enabled Malware August 2026: From Brand Abuse to Agentic Execution](https://unit42.paloaltonetworks.com/ai-enabled-malware-analysis/) * [Backdoor](https://unit42.paloaltonetworks.com/tag/backdoor/ "backdoor") * [Bitcoin](https://unit42.paloaltonetworks.com/tag/bitcoin/ "Bitcoin") * [DLL hijacking](https://unit42.paloaltonetworks.com/tag/dll-hijacking/ "DLL hijacking") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ai-enabled-malware-analysis/ "The State of AI-Enabled Malware August 2026: From Brand Abuse to Agentic Execution") ![Pictorial representation of identity abuse through trusted communication channels. Close-up view of a digital screen displaying a glitched and pixelated image of a skull-like shape.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/02_Malware_Category_1920x900-2-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 20, 2026 [#### Identity Abuse Through Trusted Communication Channels](https://unit42.paloaltonetworks.com/communication-channel-identity-risks/) * [Authentication](https://unit42.paloaltonetworks.com/tag/authentication/ "authentication") * [Identity theft](https://unit42.paloaltonetworks.com/tag/identity-theft/ "identity theft") * [Malware](https://unit42.paloaltonetworks.com/tag/malware/ "malware") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/communication-channel-identity-risks/ "Identity Abuse Through Trusted Communication Channels") ![Pictorial representation of Kimwolf botnet malware family. Digital screen with a warning sign reading "Malware." The background features lines of computer code and graphics, creating a sense of cybersecurity threat.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/07_Malware_Category_1920x900-3-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 11, 2026 [#### Kimwolf v7: An Evolution of the Kimwolf Botnet](https://unit42.paloaltonetworks.com/kimwolf-v7-botnet-malware/) * [Android APK](https://unit42.paloaltonetworks.com/tag/android-apk/ "Android APK") * [Ethereum](https://unit42.paloaltonetworks.com/tag/ethereum/ "Ethereum") * [HTTP](https://unit42.paloaltonetworks.com/tag/http/ "HTTP") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/kimwolf-v7-botnet-malware/ "Kimwolf v7: An Evolution of the Kimwolf Botnet") ![Pictorial representatiom pf Aeternum's blockchain C2. A close-up of a computer circuit board with a central microchip is depicted. Red digital data streams in the form of glowing binary numbers and arrows appear to flow in and out of the chip. The scene is illuminated with a futuristic blue and red glow.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/04_Malware_Category_1920x900-4-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 10, 2026 [#### The Permanent Threat: Analyzing Aeternum's Blockchain-Based C2 Operations and Communications](https://unit42.paloaltonetworks.com/aeternum-blockchain-c2-analysis/) * [Aeternum](https://unit42.paloaltonetworks.com/tag/aeternum/ "Aeternum") * [Infection chain](https://unit42.paloaltonetworks.com/tag/infection-chain/ "infection chain") * [JSON](https://unit42.paloaltonetworks.com/tag/json/ "JSON") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/aeternum-blockchain-c2-analysis/ "The Permanent Threat: Analyzing Aeternum’s Blockchain-Based C2 Operations and Communications") ![Pictorial representation of ChainDrop, a self-propagating npm worm. An artistic depiction of a digital workspace featuring an open laptop with a red virus on the screen.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/03_Malware_Category_1920x900-7-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)High Profile Threats](https://unit42.paloaltonetworks.com/category/top-cyberthreats/) August 6, 2026 [#### ChainDrop: Inside a Self-Propagating npm Worm](https://unit42.paloaltonetworks.com/chaindrop-npm-worm-analysis/) * [Blockchain](https://unit42.paloaltonetworks.com/tag/blockchain/ "blockchain") * [ChainDrop](https://unit42.paloaltonetworks.com/tag/chaindrop/ "ChainDrop") * [Claude code](https://unit42.paloaltonetworks.com/tag/claude-code/ "Claude code") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/chaindrop-npm-worm-analysis/ "ChainDrop: Inside a Self-Propagating npm Worm") ![Pictorial representation of Token-jacking. A person types on a laptop with multiple digital interface elements projected, including an "AI" icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/AdobeStock_1246251272-2-786x369.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 6, 2026 [#### Token Jacking: Cybercriminals Could Be Stealing Your AI Resources](https://unit42.paloaltonetworks.com/ai-token-jacking/) * [AI API](https://unit42.paloaltonetworks.com/tag/ai-api/ "AI API") * [AI gateway](https://unit42.paloaltonetworks.com/tag/ai-gateway/ "AI gateway") * [API keys](https://unit42.paloaltonetworks.com/tag/api-keys/ "API keys") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ai-token-jacking/ "Token Jacking: Cybercriminals Could Be Stealing Your AI Resources") ![Pictorial representation of malware bypassing DNS and communicating directly to IP addresses. Futuristic digital cityscape with glowing blue and orange geometric structures, resembling skyscrapers.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/08/07_DNS_Overview_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 4, 2026 [#### Almost Half of Malware Samples Communicate Direct to IP](https://unit42.paloaltonetworks.com/malware-bypass-dns-direct-to-ip/) * [Command and Control](https://unit42.paloaltonetworks.com/tag/command-and-control/ "Command and Control") * [D2IP](https://unit42.paloaltonetworks.com/tag/d2ip/ "D2IP") * [Exfiltration](https://unit42.paloaltonetworks.com/tag/exfiltration/ "exfiltration") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/malware-bypass-dns-direct-to-ip/ "Almost Half of Malware Samples Communicate Direct to IP") ![Pictorial representation of passwordless authentication. East Asian woman examining data on multiple screens in a high-tech environment, surrounded by digital graphics and code.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/07/07_Cloud_cybersecurity_research_Overview_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)Threat Research](https://unit42.paloaltonetworks.com/category/threat-research/) August 3, 2026 [#### Pass the Passkey: A Novel Attack Surface in Passwordless Authentication](https://unit42.paloaltonetworks.com/passwordless-authentication-security-risks/) * [Google authenticator](https://unit42.paloaltonetworks.com/tag/google-authenticator/ "google authenticator") * [Google Chrome](https://unit42.paloaltonetworks.com/tag/google-chrome/ "Google Chrome") * [Google Cloud](https://unit42.paloaltonetworks.com/tag/google-cloud/ "Google Cloud") [Read now ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/passwordless-authentication-security-risks/ "Pass the Passkey: A Novel Attack Surface in Passwordless Authentication") * ![Slider arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/slider-arrow-left.svg) * ![Slider arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/slider-arrow-left.svg) ![Close button](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/close-modal.svg) ![Enlarged Image]() ![Newsletter](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/03/unit42-footer-subscribe-desktop.png) ![UNIT 42 Small Logo](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/palo-alto-logo-small.svg) Get updates from Unit 42 ## Peace of mind comes from staying ahead of threats. Subscribe today. Your Email Subscribe for email updates to all Unit 42 threat research. By submitting this form, you agree to our [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use "Terms of Use") and acknowledge our [Privacy Statement.](https://www.paloaltonetworks.com/legal-notices/privacy "Privacy Statement") This site is protected by reCAPTCHA and the Google [Privacy Policy](https://policies.google.com/privacy) and [Terms of Service](https://policies.google.com/terms) apply. Invalid captcha! Subscribe ![Right Arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/right-arrow.svg) ![loader](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-loader.svg) {#footer} Products and Services * [AI-Powered Network Security Platform](https://www.paloaltonetworks.com/network-security) * [Secure AI by Design](https://www.paloaltonetworks.com/ai-security) * [Prisma AIRS](https://www.paloaltonetworks.com/ai-security/prisma-airs) * [AI Access Security](https://www.paloaltonetworks.com/sase/ai-access-security) * [Cloud Delivered Security Services](https://www.paloaltonetworks.com/network-security/security-subscriptions) * [Advanced Threat Prevention](https://www.paloaltonetworks.com/network-security/advanced-threat-prevention) * [Advanced URL Filtering](https://www.paloaltonetworks.com/network-security/advanced-url-filtering) * [Advanced WildFire](https://www.paloaltonetworks.com/network-security/advanced-wildfire) * [Advanced DNS Security](https://www.paloaltonetworks.com/network-security/advanced-dns-security) * [Enterprise Data Loss Prevention](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention) * [Enterprise IoT Security](https://www.paloaltonetworks.com/network-security/enterprise-device-security) * [Medical IoT Security](https://www.paloaltonetworks.com/network-security/medical-device-security) * [Industrial OT Security](https://www.paloaltonetworks.com/network-security/ot-security-solution) * [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security) * [Next-Generation Firewalls](https://www.paloaltonetworks.com/network-security/next-generation-firewall) * [Hardware Firewalls](https://www.paloaltonetworks.com/network-security/hardware-firewall-innovations) * [Software Firewalls](https://www.paloaltonetworks.com/network-security/software-firewalls) * [Strata Cloud Manager](https://www.paloaltonetworks.com/network-security/strata-cloud-manager) * [SD-WAN for NGFW](https://www.paloaltonetworks.com/network-security/sd-wan-subscription) * [PAN-OS](https://www.paloaltonetworks.com/network-security/pan-os) * [Panorama](https://www.paloaltonetworks.com/network-security/panorama) * [Secure Access Service Edge](https://www.paloaltonetworks.com/sase) * [Prisma SASE](https://www.paloaltonetworks.com/sase) * [Application Acceleration](https://www.paloaltonetworks.com/sase/app-acceleration) * [Autonomous Digital Experience Management](https://www.paloaltonetworks.com/sase/adem) * [Enterprise DLP](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention) * [Prisma Access](https://www.paloaltonetworks.com/sase/access) * [Prisma Browser](https://www.paloaltonetworks.com/sase/prisma-browser) * [Prisma SD-WAN](https://www.paloaltonetworks.com/sase/sd-wan) * [Remote Browser Isolation](https://www.paloaltonetworks.com/sase/remote-browser-isolation) * [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security) * [AI-Driven Security Operations Platform](https://www.paloaltonetworks.com/cortex) * [Cloud Security](https://www.paloaltonetworks.com/cortex/cloud) * [Cortex Cloud](https://www.paloaltonetworks.com/cortex/cloud) * [Application Security](https://www.paloaltonetworks.com/cortex/cloud/application-security) * [Cloud Posture Security](https://www.paloaltonetworks.com/cortex/cloud/cloud-posture-security) * [Cloud Runtime Security](https://www.paloaltonetworks.com/cortex/cloud/runtime-security) * [Prisma Cloud](https://www.paloaltonetworks.com/prisma/cloud) * [AI-Driven SOC](https://www.paloaltonetworks.com/cortex) * [Cortex XSIAM](https://www.paloaltonetworks.com/cortex/cortex-xsiam) * [Cortex XDR](https://www.paloaltonetworks.com/cortex/cortex-xdr) * [Cortex XSOAR](https://www.paloaltonetworks.com/cortex/cortex-xsoar) * [Cortex Xpanse](https://www.paloaltonetworks.com/cortex/cortex-xpanse) * [Unit 42 Managed Detection \& Response](https://www.paloaltonetworks.com/cortex/managed-detection-and-response) * [Managed XSIAM](https://www.paloaltonetworks.com/cortex/managed-xsiam) * [Next-Generation Identity Security](https://www.paloaltonetworks.com/idira) * [Privileged Access Management](https://www.paloaltonetworks.com/idira/human/privileged-access-management) * [Identity and Access Management](https://www.paloaltonetworks.com/idira/human/identity-and-access-management) * [Endpoint Privilege Manager](https://www.paloaltonetworks.com/idira/human/endpoint-privilege-manager) * [Identity Governance](https://www.paloaltonetworks.com/idira/human/identity-governance) * [Workforce Password Management](https://www.paloaltonetworks.com/idira/human/workforce-password-management) * [Agentic Identities](https://www.paloaltonetworks.com/idira/agentic) * [Secrets Management](https://www.paloaltonetworks.com/idira/machine/secrets-management) * [Unified Secrets Governance](https://www.paloaltonetworks.com/idira/machine/unified-secrets-governance) * [Application Credentials Delivery](https://www.paloaltonetworks.com/idira/machine/application-credentials-delivery) * [Vendor Privileged Access](https://www.paloaltonetworks.com/idira/human/vendor-privileged-access) * [Threat Intel and Incident Response Services](https://www.paloaltonetworks.com/unit42) * [Proactive Assessments](https://www.paloaltonetworks.com/unit42/assess) * [Incident Response](https://www.paloaltonetworks.com/unit42/respond) * [Transform Your Security Strategy](https://www.paloaltonetworks.com/unit42/transform) * [Discover Threat Intelligence](https://www.paloaltonetworks.com/unit42/threat-intelligence-partners) Company * [About Us](https://www.paloaltonetworks.com/about-us) * [Careers](https://jobs.paloaltonetworks.com/en/) * [Contact Us](https://www.paloaltonetworks.com/company/contact-sales) * [Corporate Responsibility](https://www.paloaltonetworks.com/about-us/corporate-responsibility) * [Customers](https://www.paloaltonetworks.com/customers) * [Investor Relations](https://investors.paloaltonetworks.com/) * [Location](https://www.paloaltonetworks.com/about-us/locations) * [Newsroom](https://www.paloaltonetworks.com/company/newsroom) Popular Links * [Blog](https://www.paloaltonetworks.com/blog/) * [Communities](https://www.paloaltonetworks.com/communities) * [Content Library](https://www.paloaltonetworks.com/resources) * [Cyberpedia](https://www.paloaltonetworks.com/cyberpedia) * [Event Center](https://events.paloaltonetworks.com/) * [Manage Email Preferences](https://start.paloaltonetworks.com/preference-center) * [Products A-Z](https://www.paloaltonetworks.com/products/products-a-z) * [Product Certifications](https://www.paloaltonetworks.com/legal-notices/trust-center/certifications) * [Report a Vulnerability](https://www.paloaltonetworks.com/security-disclosure) * [Sitemap](https://www.paloaltonetworks.com/sitemap) * [Tech Docs](https://docs.paloaltonetworks.com/) * [Unit 42](https://unit42.paloaltonetworks.com/) * [Do Not Sell or Share My Personal Information](https://panwedd.exterro.net/portal/dsar.htm?target=panwedd) ![Palo Alto Networks Logo](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/pan-logo-dark.svg) * [Privacy](https://www.paloaltonetworks.com/legal-notices/privacy) * [Trust Center](https://www.paloaltonetworks.com/legal-notices/trust-center) * [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use) * [Documents](https://www.paloaltonetworks.com/legal) Copyright © 2026 Palo Alto Networks. All Rights Reserved * [![Youtube](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/youtube-black.svg)](https://www.youtube.com/user/paloaltonetworks) * [![Podcast](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/icons/podcast.svg)](https://www.paloaltonetworks.com/podcasts/threat-vector) * [![Facebook](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/facebook-black.svg)](https://www.facebook.com/PaloAltoNetworks/) * [![LinkedIn](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/linkedin-black.svg)](https://www.linkedin.com/company/palo-alto-networks) * [![Twitter](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/twitter-x-black.svg)](https://twitter.com/PaloAltoNtwks) * EN Select your language ![Play](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-play-icon.svg) ![Pause](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-pause-icon1.svg) ![Minimize](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-minimize.svg) ![Close button](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/close-modal.svg) ### Default Heading Read the article ![Right Arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/right-arrow.svg) Seekbar ![Play](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-play-icon.svg) ![Pause](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-pause-icon1.svg) ![Volume](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-volume.svg) Volume ![Minimize](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-minimize.svg)