[![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/unit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists/)
* [Japanese](https://unit42.paloaltonetworks.com/ja/unit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists/)
* [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/)

# New Poison Ivy RAT Variant Targets Hong Kong Pro-Democracy Activists

![Clock Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-clock.svg) 6 min read

* ![Profile Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-profile-grey.svg)  
  By:
  
  * [Micah Yates](https://unit42.paloaltonetworks.com/author/micah-yates/)
  * [Mike Scott](https://unit42.paloaltonetworks.com/author/mike-scott/)
  * [Brandon Levene](https://unit42.paloaltonetworks.com/author/brandon-levene/)
  * [Jen Miller-Osborn](https://unit42.paloaltonetworks.com/author/jen-miller-osborn/)

* ![Published Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-calendar-grey.svg)  
  Published:April 21, 2016

* ![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:
  
  * [DLL](https://unit42.paloaltonetworks.com/tag/dll/)
  * [PIVY](https://unit42.paloaltonetworks.com/tag/pivy/)
  * [Poison Ivy](https://unit42.paloaltonetworks.com/tag/poison-ivy/)
  * [SPIVY](https://unit42.paloaltonetworks.com/tag/spivy/)

* [![Download Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-download.svg)](https://unit42.paloaltonetworks.com/unit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists/?pdf=download&lg=en&_wpnonce=64814e76fb "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/unit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists/?pdf=print&lg=en&_wpnonce=64814e76fb "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=New%20Poison%20Ivy%20RAT%20Variant%20Targets%20Hong%20Kong%20Pro-Democracy%20Activists&body=Check%20out%20this%20article%20https%3A%2F%2Funit42.paloaltonetworks.com%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%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%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%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%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%2F&title=New%20Poison%20Ivy%20RAT%20Variant%20Targets%20Hong%20Kong%20Pro-Democracy%20Activists "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%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%2F&text=New%20Poison%20Ivy%20RAT%20Variant%20Targets%20Hong%20Kong%20Pro-Democracy%20Activists "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%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%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=New%20Poison%20Ivy%20RAT%20Variant%20Targets%20Hong%20Kong%20Pro-Democracy%20Activists%20https%3A%2F%2Funit42.paloaltonetworks.com%2Funit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists%2F "Share in Mastodon")
  Malware writers have always sought to develop feature-rich, easy to use tools that are also somewhat hard to detect via both host- and network-based detection systems. For many years, one of the go-to families of malware used by both less-skilled and advanced actors has been the Poison Ivy (aka PIVY) RAT. Poison Ivy has a convenient graphical user interface (GUI) for managing compromised hosts and provides easy access to a rich suite of post-compromise tools. It is no surprise it's now being used against pro-democracy organizations and supporters in Hong Kong that have long been a target of advanced attack campaigns.

Despite its simplicity and prevalence, detection rates for both AV and IDS systems has always been surprisingly low for Poison Ivy. Possibly for these reasons, since the mid-2000s threat actors have frequently used Poison Ivy to establish beachheads within target organizations, although this occurs much less frequently today than in years past. Since the last public release of version 2.3.2 in 2008, new variants of the tool have been relatively rare, especially versions which modify the core communication protocols.

Unit 42 observed a new version of Poison Ivy which uses the popular search order hijacking, a/k/a "[DLL Sideloading](https://attack.mitre.org/wiki/DLL_side-loading)," technique frequently seen in malware such as PlugX. The Poison Ivy builder has an output format option of either PE file or shellcode, and in this case the backdoor was built as shellcode and then obfuscated to help prevent detection. While analyzing the sample, we also observed a modified network communication protocol which will be discussed in this blog.

### **SPIVY**

In March, Unit 42 observed this new Poison Ivy variant we've named SPIVY being deployed via weaponized documents leveraging CVE-2015-2545. All of the decoy document themes involved recent Hong Kong pro-democracy events. In all of the samples we've found to date the exploit drops a self-extracting RAR which contains three files:

* exe - a legitimate, signed executable which is used to side-load the malware DLL
* dll - the malware DLL loaded by RasTls.exe, which then loads the Poison Ivy shellcode file
* hlp - the encoded shellcode Poison Ivy backdoor.

Both identified C2 domains are third-levels off of leeh0m\[.\]org, which was created in late February 2016, less than a month before the attacks.

[![Poison Ivy 1](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-1-500x162.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-1.png)

*Figure 1. Malicious RARs and the three files within*

In addition to the new variant we discovered, Japan's Computer Emergency Response Team Coordination Center (JPCERTCC) published a [blog](https://blog.jpcert.or.jp/2015/07/poisonivy-adapts-to-communicate-through-authentication-proxies.html) last July on a different new variant. That variant is also side-loaded from a legitimate executable and stub DLL, but the shellcode isn't encoded the same way as SPIVY. JPCERTCC didn't comment on who was being targeted in their blog, but it is notable that two distinct Poison Ivy variants have recently appeared, several years after the tool largely fell out of common use by advanced actors.

### **SPIVY Analysis**

We believe the samples dropped have a direct connection to older Poison Ivy RATs based off of the behaviors and code reuse present in the shellcode loaded by the samsung.hlp file within the RAR. Once decoded, the shellcode is launched by ssMUIDLL.dll.

[![Poison Ivy 2](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-2-500x194.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-2.png)

*Figure 2. The encoded shellcode is decoded with a single byte addition of 0x99, XOR with 0xD4, then subtract 0x33.*

The SPIVY RAT uses the same API call table generation historically used by Poison Ivy. Shown below is a comparison of a PIVY sample from 2008 and our newer SPIVY sample on the right. Both have the exact same API call table function.

[![Poison Ivy 3](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-3-500x359.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-3.png)

*Figure 3. PIVY sample from 2008 and SPIVY variant with the same API call table function.*

Unlike previous versions of Poison Ivy which utilize a fixed 256 byte challenge-response handshake, this new version generates a payload that has been prepended with anywhere from 1 to 16 bytes of pseudo-random data (plus control bytes), the 1st byte of which gives the length of the padding before the start of the 256 byte handshake. In the example below the first byte (0x09) tells the Poison Ivy controller to ignore the following 9 bytes (which were nulled out below for illustration purposes), plus one more byte which holds the first byte multiplied by 2 ( 0x09 X 2 = 0x12). Two control bytes, plus the 9 random, plus the 256 byte handshake gives us 267 total bytes. The Poison Ivy protocol has been very well documented in previous [research](https://blog.conixsecurity.fr/wp-content/uploads/2013/10/Poison-Ivy-RAT-conf-comms.pdf) by Conix Security and others, and in these samples the remainder of the protocol remains unchanged.

[![Poison Ivy 4](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-4-500x381.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-4.png)

*Figure 4. SPIVY's new challenge-response.*

We saw two Poison Ivy configurations with our samples, shown below.

SHA256: 9c6dc1c2ea5b2370b58b0ac11fde8287cd49aee3e089dbdf589cc8d51c1f7a9e  
Password: bqesid#@  
C2 domain: found.leeh0m\[.\]org  
C2 port: 443  
Mutex: 40EM76iR9  
ID: 03-18  
Group: 03-18

SHA256: 4d38d4ee5b625e09b61a253a52eb29fcf9c506ee9329b3a90a0b3911e59174f2  
Password: bqesid#@  
C2 domain: sent.leeh0m\[.\]org  
C2 port: 443  
Mutex: 40EM76iR9  
ID: 03-07  
Group: 03-07

### **Decoy Documents**

Decoy documents are a common technique used by many actors to trick victims into believing they have opened legitimate files from spear phishing e-mails. The attacker sends a malicious file which infects the host with malware and then displays a clean document which contains content the victim is expecting to see.

The decoy documents associated with SPIVY are notable because they reference very specific recent events and organizations not widely publicized or known outside of the Hong Kong region and the pro-democracy movement. In addition, all appear to be legitimate invitations to actual events in Hong Kong. One of the decoys purports to be from Joshua Wong, announcing a press conference about ending the Scholarism group to start a progressive democratic political party, Demosistō, in March 2016. Joshua Wong is a well known Hong Kong activist who was one of the founders of the group and is the current Secretary-General for the political party. Scholarism centered around concerns for the Hong Kong's Department of Education adding a mandatory course for all secondary-school students for "moral and national education". Scholarism was successful in stopping the course and its members desired to shift into a political party to effect further change.

[](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-4.png) [![Poison Ivy 5](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-5-500x304.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-5.png)

*Figure 5. Invitation to press conference about disbanding Scholarism and establishing a political party.*

Another decoy concerns the Mong Kok riot that took place February 8, 2016, the first day of the Lunar New Year. It purports to be from the Justice \& Peace Commission of the Hong Kong Catholic Diocese and calls for the government to establish an independent commission to investigate the cause of the riots and for parishes to establish booths throughout April staffed with church members advertising this. The riots were officially written off as being caused by a crackdown on unlicensed street vendors, but the decoy claims it's instead a sign of continued civil unrest and dissatisfaction with the government in Hong Kong.

[![Poison Ivy 6](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-6-500x363.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-6.png)

*Figure 6. Decoy allegedly from the Justice \& Peace Commission of the Hong Kong Catholic Diocese*

The final decoy is an invitation to an April 4, 2016 wreath laying event held by the Hong Kong Alliance in Support of Patriotic Democratic Movements of China. The event commemorated the 28^th^ anniversary of the Tiananmen Square massacre and related events, information to which China heavily censors access for mainland Chinese citizens.

[![Poison Ivy 7](http://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-7-500x285.png)](https://blog.paloaltonetworks.com/wp-content/uploads/2016/04/Poison-Ivy-7.png)

*Figure 7. Decoy for an April 4, 2016 wreath laying event commemorating the Tiananmen Square massacre held by the Hong Kong Alliance in Support of Patriotic Democratic Movements of China.*

### **Conclusion**

The venerable Poison Ivy has been revamped and used to continue targeted attacks against pro-democracy activists in Hong Kong. It's fairly common to see actors retool malware to make it harder to detect, though it was rarely seen before with Poison Ivy. The updated execution and communications mechanisms of SPIVY offer insight into the ever changing tools, techniques, and practices of targeted attackers. Unit 42 will continue to follow these attacks and any new Poison Ivy variants and provide updates as we uncover new information. It is clearly demonstrated by this recent campaign that an old dog can learn new tricks.

Pro-democratic activists in Hong Kong have increasingly been targeted by APT campaigns. Below are links to several related reports from different researchers. We don't necessarily link the activity in this blog to any of the specific campaigns cited in the links; instead, they are provided for situational awareness.

* October 2014 [blog](https://www.volexity.com/blog/?p=33) from Volexity titled "Democracy in Hong Kong Under Attack"
* June 2015 [blog](https://citizenlab.org/2015/06/targeted-attacks-against-tibetan-and-hong-kong-groups-exploiting-cve-2014-4114/) from Citizen Lab titled "Targeted Attacks against Tibetan and Hong Kong Groups Exploiting CVE-2014-4114"
* December 2015 [blog](https://www.fireeye.com/blog/threat-research/2015/11/china-based-threat.html) from FireEye titled "China-based Cyber Threat Group Uses Dropbox for Malware Communications and Targets Hong Kong Media Outlets"
* April 2016 [blog](https://citizenlab.org/2016/04/between-hong-kong-and-burma/) from Citizen Lab titled "Between Hong Kong and Burma: Tracking UP007 and SLServer Espionage Campaigns"

Palo Alto Networks customers can identify SPIVY command and control traffic using Threat Prevention signature ID and AutoFocus users can track this family using the [SPIVY](https://autofocus.paloaltonetworks.com/#/tag/Unit42.SPIVY) tag.

**IOCs**

**Weaponized EPS Docs:**

13bdc52c2066e4b02bae5cc42bc9ec7dfcc1f19fbf35007aea93e9d62e3e3fd0  
4d38d4ee5b625e09b61a253a52eb29fcf9c506ee9329b3a90a0b3911e59174f2  
9c6dc1c2ea5b2370b58b0ac11fde8287cd49aee3e089dbdf589cc8d51c1f7a9e

**Loader Files**

*RasTls.exe* - legitimate, signed binary that is used in the sideloading process  
0191cb2a2624b532b2dffef6690824f7f32ea00730e5aef5d86c4bad6edf9ead  
*ssMUIDLL.dll* - 7a424ad3f3106b87e8e82c7125834d7d8af8730a2a97485a639928f66d5f6bf4

**Poison Ivy shellcode files**

c707716afde80a41ce6eb7d6d93da2ea5ce00aa9e36944c20657d062330e13d8  
0414bd2186d9748d129f66ff16e2c15df41bf173dc8e3c9cbd450571c99b3403

**C2 Domains**

sent.leeh0m\[.\]org  
found.leeh0m\[.\]org
Back to top

### Tags

* [DLL](https://unit42.paloaltonetworks.com/tag/dll/ "DLL")
* [PIVY](https://unit42.paloaltonetworks.com/tag/pivy/ "PIVY")
* [Poison Ivy](https://unit42.paloaltonetworks.com/tag/poison-ivy/ "Poison Ivy")
* [SPIVY](https://unit42.paloaltonetworks.com/tag/spivy/ "SPIVY")  
  [Threat Research Center](https://unit42.paloaltonetworks.com "Threat Research") [Next: Python-Based PWOBot Targets European Organizations](https://unit42.paloaltonetworks.com/unit42-python-based-pwobot-targets-european-organizations/ "Python-Based PWOBot Targets European Organizations")

### Related Articles

* [AdaptixC2: A New Open-Source Framework Leveraged in Real-World Attacks](https://unit42.paloaltonetworks.com/adaptixc2-post-exploitation-framework/ "article - table of contents")
* [Multiple Vulnerabilities Discovered in a SCADA System](https://unit42.paloaltonetworks.com/vulnerabilities-in-iconics-software-suite/ "article - table of contents")
* [Intruders in the Library: Exploring DLL Hijacking](https://unit42.paloaltonetworks.com/dll-hijacking-techniques/ "article - table of contents")

## Related Malware Resources

![Pictorial representation of post-exploitation identity misuse in SPIFFE/SPIRE. Close-up of a person wearing glasses, with computer code reflected in the lenses.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/12_Security-Technology_Category_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/) September 10, 2026 [#### The Machine With Many Faces: Post-Exploitation Identity Misuse in SPIFFE/SPIRE](https://unit42.paloaltonetworks.com/kubernetes-spiffe-spire-identity-spoofing/)

* [API](https://unit42.paloaltonetworks.com/tag/api/ "API")

* [Cryptographic](https://unit42.paloaltonetworks.com/tag/cryptographic/ "cryptographic")

* [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/kubernetes-spiffe-spire-identity-spoofing/ "The Machine With Many Faces: Post-Exploitation Identity Misuse in SPIFFE/SPIRE")  
  ![Pictorial representation of a pay-per-install threat group campaign prodiving infection service for spreading malware. 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, symbolizing data processing and transfer. The scene is illuminated with a futuristic blue and red glow.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/04_Malware_Category_1920x900-6-786x368.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/) September 9, 2026 [#### Untracked Nightmares: The Threats Hiding Behind Commodity Infrastructure](https://unit42.paloaltonetworks.com/ppi-network-malware-campaign-analysis/)

* [ARKTunnel](https://unit42.paloaltonetworks.com/tag/arktunnel/ "ARKTunnel")

* [C2](https://unit42.paloaltonetworks.com/tag/c2/ "C2")

* [CL-CRI-1171](https://unit42.paloaltonetworks.com/tag/cl-cri-1171/ "CL-CRI-1171")  
  [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/ppi-network-malware-campaign-analysis/ "Untracked Nightmares: The Threats Hiding Behind Commodity Infrastructure")  
  ![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")

* ![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)

* [Prepare for Emerging Risks](https://www.paloaltonetworks.com/unit42/frontier-ai-defense)

* [Strengthen Your Defenses](https://www.paloaltonetworks.com/unit42/strengthen-your-defenses)

* [Build Your Security Strategy](https://www.paloaltonetworks.com/unit42/build-your-security-strategy)

* [Understand the Adversary](https://www.paloaltonetworks.com/unit42/threat-intelligence)

* [Respond to a Cyber Attack](https://www.paloaltonetworks.com/unit42/respond)  
  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)
