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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: 2026-05-18T11:00:00Z · Confidence: medium

Hunt Hypothesis

CommentCrew-threat-apt1 detects potential adversary behavior involving the use of comment-based payloads or obfuscated scripts commonly associated withAPT1 tactics, which may indicate low-and-slow compromise. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage persistent threats that evade traditional detection methods.

YARA Rule

rule APT1_WEBC2_HEAD
{

    meta:
        author = "AlienVault Labs"
        info = "CommentCrew-threat-apt1"
        
    strings:
        $1 = "Ready!" wide ascii
        $2 = "connect ok" wide ascii
        $3 = "WinHTTP 1.0" wide ascii
        $4 = "<head>" wide ascii

    condition:
        all of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 4 string patterns in its detection logic.

False Positive Guidance

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