Trellix Insights: PortDoor Backdoor Targets Russian Defense Sector
Last Modified: 2022-09-09 09:22:26 Etc/GMT
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Trellix Insights: PortDoor Backdoor Targets Russian Defense Sector
Technical Articles ID:
KB94757
Last Modified: 2022-09-09 09:22:26 Etc/GMT Environment
IMPORTANT: This Knowledge Base article discusses a specific threat that is being automatically tracked by Trellix Insights technology. The content is intended for use by Trellix Insights users, but is provided for general knowledge to all customers. Contact us for more information about Trellix Insights.
SummaryAn unknown threat actor, which may be operating on behalf of Chinese state-sponsored interests, targeted the Russian defense sector with weaponized RTF documents. The documents were generated with the RoyalRoad tool, which generates malicious RTF files that exploit flaws in Microsoft's Equation Editor. The dropped payload was a previously undocumented backdoor known as PortDoor. The malware performed a range of tasks including gathering and exfiltrating system information, privilege escalation, process manipulation, and static detection evasion. Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Cybereason and shared publicly. How to use this article:
Campaign IOC
Minimum Content Versions
Detection Summary
Aggressive set of Manual Rules to improve protection to block this campaign: IMPORTANT: Always follow best practices when you enable new rules and signatures. When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration. For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules. Host Intrusion Prevention: Rule ID: 6010 Generic Application Hooking Protection Rule ID: 1148 CMD Tool Access by a Network Aware Application Rule ID: 6011 Generic Application Invocation Protection Affected Products |
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