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Variant ![Clock Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-clock.svg) 2 min read * ![Profile Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-profile-grey.svg) By: * [Eila Shargh](https://unit42.paloaltonetworks.com/author/eila-shargh/) * ![Published Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-calendar-grey.svg) Published:November 20, 2017 * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-category.svg) Categories: * [High Profile Threats](https://unit42.paloaltonetworks.com/category/top-cyberthreats/) * [Malware](https://unit42.paloaltonetworks.com/category/malware/) * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-tags-grey.svg) Tags: * [2 minute threat brief](https://unit42.paloaltonetworks.com/tag/2-minute-threat-brief/) * [Reaver](https://unit42.paloaltonetworks.com/tag/reaver/) * [SunOrcal](https://unit42.paloaltonetworks.com/tag/sunorcal/) * [![Download Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-download.svg)](https://unit42.paloaltonetworks.com/unit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant/?pdf=download&lg=en&_wpnonce=30e6d023f2 "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/unit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant/?pdf=print&lg=en&_wpnonce=30e6d023f2 "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=2%20Minute%20Threat%20Brief:%20Expanding%20Targets%20for%20New%20SunOrcal%20Malware%20Variant&body=Check%20out%20this%20article%20https%3A%2F%2Funit42.paloaltonetworks.com%2Funit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant%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%2Funit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant%2F "Share in Facebook") * [![LinkedIn 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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%2Funit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant%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=2%20Minute%20Threat%20Brief:%20Expanding%20Targets%20for%20New%20SunOrcal%20Malware%20Variant%20https%3A%2F%2Funit42.paloaltonetworks.com%2Funit42-2-minute-threat-brief-expanding-targets-new-sunorcal-malware-variant%2F "Share in Mastodon") Unit 42 has recently been investigating [a new malware family called Reaver](https://blog.paloaltonetworks.com/2017/11/unit42-new-malware-with-ties-to-sunorcal-discovered/). While we have identified it as being active since late 2016, Reaver has been used sparingly, with only a small number of unique samples identified. Its targets have been movements the Chinese government consider dangerous, also known as the "Five Poisons." We found that the Reaver malware family has shared command-and-control (C2) infrastructure overlap SunOrcal malware, and that these have been used concurrently since late 2016. While investigating Reaver we recently also discovered [a new variant of the SunOrcal malware family](https://blog.paloaltonetworks.com/2017/11/unit42-sunorcal-adds-github-steganography-repertoire-expands-vietnam-myanmar/). While the SunOrcal malware family has been confirmed to have been active since 2013, possibly even earlier, this new variant has been observed targeting regions outside of the typical target radius for this threat group, now expanding to include Vietnam and Myanmar. How it Works Emails were sent to targets containing malicious attachments. Targeting a Vietnamese speaking audience, one of the malicious documents mentions Donald Trump and the disputed South China Sea area. This is a classic lure technique -- including something the target will find interesting or important causing them to open the file and download the malware on to the victims' system. How to Defend Against it These malware attacks utilize email [phishing](https://www.paloaltonetworks.com/cyberpedia/what-is-a-phishing-attack), and relies on targets opening the malicious email attachment. Security awareness is critical to avoid falling victim to such an attack. General email best practices: * Make sure the sender is a trusted source. If you've never received something from them before, or the email address has typos, don't open it. * If the sender appears to be convincing, pay close attention to the body of the email. Are there a lot of typos? Does the branding/logo look different? Does it look unprofessional? * Never click on a link within the email or download an attachment. * Don't respond to the email with any password or personal information. If you are unsure of the legitimacy of the email, contact the sender directly over the phone or by typing a trusted URL directly in your browser or saved bookmark. Additionally, keeping your systems and devices updated with the most current operating system and web browser is a general security best practice, as well as enabling multi-factor authentication to prevent an attacker from abusing credentials should they successfully capture them. Back to top ### Tags * [2 minute threat brief](https://unit42.paloaltonetworks.com/tag/2-minute-threat-brief/ "2 minute threat brief") * [Reaver](https://unit42.paloaltonetworks.com/tag/reaver/ "Reaver") * [SunOrcal](https://unit42.paloaltonetworks.com/tag/sunorcal/ "SunOrcal") [Threat Research Center](https://unit42.paloaltonetworks.com "Threat Research") [Next: Muddying the Water: Targeted Attacks in the Middle East](https://unit42.paloaltonetworks.com/unit42-muddying-the-water-targeted-attacks-in-the-middle-east/ "Muddying the Water: Targeted Attacks in the Middle East") ### Related Articles * [Threat Brief: Why You Need to Be Careful of Links in Email](https://unit42.paloaltonetworks.com/unit42-threat-brief-need-careful-links-email/ "article - table of contents") * [Using Existing Malware to Save You Time](https://unit42.paloaltonetworks.com/unit42-using-existing-malware-save-time/ "article - table of contents") * [SunOrcal Adds GitHub and Steganography to its Repertoire, Expands to Vietnam and Myanmar](https://unit42.paloaltonetworks.com/unit42-sunorcal-adds-github-steganography-repertoire-expands-vietnam-myanmar/ "article - table of contents") ## Related Malware Resources ![Pictorial representation of TLS Certificate compromise. A person typing on a laptop with digital graphics of binary code and light beams emanating from the screen, representing data transfer or cyber activity.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/10/07_Security-Technology_Category_1920x900-1-786x368.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/) October 22, 2026 [#### EMudhra Intermediate CA Certificates Compromised](https://unit42.paloaltonetworks.com/emudhra-certificate-compromise/) * [Certificates](https://unit42.paloaltonetworks.com/tag/certificates/ "certificates") * [Compromise](https://unit42.paloaltonetworks.com/tag/compromise/ "Compromise") * [Cryptographic](https://unit42.paloaltonetworks.com/tag/cryptographic/ "cryptographic") [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/emudhra-certificate-compromise/ "EMudhra Intermediate CA Certificates Compromised") ![](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/10/AdobeStock_1246251272-2-1-786x369.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/) October 21, 2026 [#### "Next Exploit Opportunities": How a Threat Actor Used AI to Help Plan and Execute Multiple Types of Cybercrime Activities](https://unit42.paloaltonetworks.com/ai-assisted-cybercrime-analysis/) * [API](https://unit42.paloaltonetworks.com/tag/api/ "API") * [Data exfiltration](https://unit42.paloaltonetworks.com/tag/data-exfiltration/ "data exfiltration") * [DeepSeek](https://unit42.paloaltonetworks.com/tag/deepseek/ "DeepSeek") [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-assisted-cybercrime-analysis/ "“Next Exploit Opportunities”: How a Threat Actor Used AI to Help Plan and Execute Multiple Types of Cybercrime Activities") ![Pictorial representation of AI-powered campaign targeting government infrastructure. A glowing, blue, brain-shaped structure floats above a central microchip on a circuit board. The scene is futuristic, with neon lights illuminating the interconnected pathways and components.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/10/AdobeStock_637057734-786x368.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/) October 15, 2026 [#### AI-Powered Espionage Campaign Targets Government Linux Infrastructure](https://unit42.paloaltonetworks.com/ai-campaign-targets-linux-infrastructure/) * [Exfiltration](https://unit42.paloaltonetworks.com/tag/exfiltration/ "exfiltration") * [LLM](https://unit42.paloaltonetworks.com/tag/llm/ "LLM") * [Network security](https://unit42.paloaltonetworks.com/tag/network-security/ "network security") [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-campaign-targets-linux-infrastructure/ "AI-Powered Espionage Campaign Targets Government Linux Infrastructure") ![Pictorial representation of PEERSTITCH, a FortiGate implant. A digital illustration depicting a circuit board with a prominent red warning triangle and exclamation mark in the center. The background is filled with various computer circuitry patterns.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/10/09_Vulnerabilities_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/) October 14, 2026 [#### Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant](https://unit42.paloaltonetworks.com/fortimanager-cve-2024-47575-peerstitch-malware/) * [Apache](https://unit42.paloaltonetworks.com/tag/apache/ "Apache") * [CL-STA-0954](https://unit42.paloaltonetworks.com/tag/cl-sta-0954/ "CL-STA-0954") * [Logging](https://unit42.paloaltonetworks.com/tag/logging/ "logging") [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/fortimanager-cve-2024-47575-peerstitch-malware/ "Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant") ![Pictorial representation of operation blinder tunnel. Screen displaying code with a prominent alert symbol and the words 'VIRUS DETECTED' highlighted in red.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/05_Malware_Category_1920x900-1-786x368.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/) October 6, 2026 [#### Blinder Tunnel Campaign Targets Iraqi Infrastructure](https://unit42.paloaltonetworks.com/blinder-tunnel-targets-critical-infrastructure/) * [Advanced Persistent Threat](https://unit42.paloaltonetworks.com/tag/advanced-persistent-threat/ "Advanced Persistent Threat") * [Agent Serpens](https://unit42.paloaltonetworks.com/tag/agent-serpens/ "Agent Serpens") * [AppDomainManager](https://unit42.paloaltonetworks.com/tag/appdomainmanager/ "AppDomainManager") [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/blinder-tunnel-targets-critical-infrastructure/ "Blinder Tunnel Campaign Targets Iraqi Infrastructure") ![Pictorial representation of how K8 operators betray your security posture. A close-up of a futuristic microchip with glowing circuits in vibrant colors, including blue, purple, and orange, reflecting light.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/AdobeStock_652069707-1-786x368.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 29, 2026 [#### OperTraitors: How Kubernetes Operators Betray Your Security Posture](https://unit42.paloaltonetworks.com/agentic-ai-kubernetes-operator-risks/) * [AI](https://unit42.paloaltonetworks.com/tag/ai/ "AI") * [AI agents](https://unit42.paloaltonetworks.com/tag/ai-agents/ "AI agents") * [API](https://unit42.paloaltonetworks.com/tag/api/ "API") [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/agentic-ai-kubernetes-operator-risks/ "OperTraitors: How Kubernetes Operators Betray Your Security Posture") ![Pictorial representation of a magnifying glass illuminating a glowing orange circular digital circuit interface on a dark, high-tech background.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/09/04_Myth-Busting_Overview_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/08/Insights-icon-white.svg)Insights](https://unit42.paloaltonetworks.com/category/insights/) September 16, 2026 [#### Atomic macOS (AMOS) Stealer Activity](https://unit42.paloaltonetworks.com/atomic-macos-amos-stealer-activity/) * [MacOS](https://unit42.paloaltonetworks.com/tag/macos/ "macOS") * [Threat intelligence](https://unit42.paloaltonetworks.com/tag/threat-intelligence/ "threat intelligence") * [Unit 42](https://unit42.paloaltonetworks.com/tag/unit-42/ "Unit 42") [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/atomic-macos-amos-stealer-activity/ "Atomic macOS (AMOS) Stealer Activity") ![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") * ![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. 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