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Detects c# red/black-team tools via typelibguid

yara LOW Yara-Rules
communitynet_guid
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: 2026-07-23T23:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies potential adversary activity by monitoring for specific TypeLibGUID values associated with known C# red and blue team reconnaissance or attack tools within the Azure Sentinel environment. Proactive hunting for these indicators is essential to distinguish legitimate security operations from malicious tool usage that may otherwise blend into normal background noise, ensuring early visibility into stealthy post-exploitation movements.

YARA Rule

rule HKTL_NET_GUID_SharpMove {
    meta:
        description = "Detects c# red/black-team tools via typelibguid"
        reference = "https://github.com/0xthirteen/SharpMove"
        author = "Arnim Rupp"
        date = "2020-12-28"
    strings:
        $typelibguid0 = "8bf82bbe-909c-4777-a2fc-ea7c070ff43e" ascii nocase wide
    condition:
        (uint16(0) == 0x5A4D and uint32(uint32(0x3C)) == 0x00004550) and any of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 1 string patterns in its detection logic.

References

False Positive Guidance

Here are 5 specific false positive scenarios for the “Detects C# Red/Black-Team Tools via TypelibGUID” rule, including suggested filters and exclusions:

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