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CommentCrew-threat-apt1

yara LOW Yara-Rules
aptcommunity
This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at Yara-Rules →
Retrieved: 2026-05-17T11:00:00Z · Confidence: medium

Hunt Hypothesis

CommentCrew-threat-apt1 detects potential adversary behavior involving suspicious comment-based PowerShell scripts that may be used for initial access or command and control. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage threat activity from unknown or low-severity adversaries.

YARA Rule

rule AURIGA_driver_APT1
{

    meta:
        author = "AlienVault Labs"
        info = "CommentCrew-threat-apt1"
        
    strings:
        $s1 = "Services\\riodrv32" wide ascii
        $s2 = "riodrv32.sys" wide ascii
        $s3 = "svchost.exe" wide ascii
        $s4 = "wuauserv.dll" wide ascii
        $s5 = "arp.exe" wide ascii
        $pdb = "projects\\auriga" wide ascii

    condition:
        all of ($s*) or $pdb
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 6 string patterns in its detection logic.

False Positive Guidance

Original source: https://github.com/Yara-Rules/rules/blob/main/malware/APT_APT1.yar