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Detects .NET red/black-team tools via name

yara LOW Yara-Rules
communitynet_name
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: 2026-07-25T23:00:00Z · Confidence: medium

Hunt Hypothesis

This rule identifies the execution of known .NET-based Red and Black team utility names to distinguish legitimate security testing activities from potential adversary tool usage. Proactive hunting for these indicators in Azure Sentinel is essential to differentiate between authorized internal assessments and suspicious external reconnaissance that may mimic similar tool signatures.

YARA Rule

rule HKTL_NET_NAME_DotNetInject {
    meta:
        description = "Detects .NET red/black-team tools via name"
        reference = "https://github.com/dtrizna/DotNetInject"
        author = "Arnim Rupp"
        date = "2021-01-22"
    strings:
        $name = "DotNetInject" ascii wide
        $compile = "AssemblyTitle" ascii wide
    condition:
        (uint16(0) == 0x5A4D and uint32(uint32(0x3C)) == 0x00004550) and all of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 2 string patterns in its detection logic.

References

False Positive Guidance

Here are 5 specific false positive scenarios for the rule “Detects .NET red/blue-team tools via name,” including suggested filters and exclusions:

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