Trellix Insights: DarkWatchman RAT targets Russian entities
Technical Articles ID:
KB95249
Last Modified: 2022-09-02 07:01:59 Etc/GMT
Last Modified: 2022-09-02 07:01:59 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.
Summary
A fileless JavaScript-based Remote Access Trojan (RAT), known as DarkWatchman, was discovered being delivered in spear-phishing emails. The emails are spoofed and appear to be sent from a legitimate company in Russia. The RAT heavily utilizes LOLbins and contains an information stealer written in C# which is used to log keystrokes and steal clipboard data. The unknown threat actor leverages Domain Generation Algorithm (DGA) for command-and-control communication.
Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Prevailion and shared publicly.
How to use this article:
- If a Threat Hunting table has been created, use the rules contained to search for malware related to this campaign.
- Review the product detection table and confirm that your environment is at least on the specified content version.
To download the latest content versions, go to the Security Updates page. - Scroll down and review the "Product Countermeasures" section of this article. Consider implementing them if they are not already in place.
- Review
KB91836 - Countermeasures for entry vector threats . - Review KB87843 - Dynamic Application Containment rules and best practices.
- Review KB82925 - Identify what rule corresponds to an Adaptive Threat Protection and Threat Intelligence Exchange event.
Campaign IOC
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Minimum 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.
Endpoint Security - Advanced Threat Protection:
Endpoint Security - Exploit Prevention:
