← Back to SOC feed Coverage →

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: 2026-07-26T11:00:00Z · Confidence: medium

Hunt Hypothesis

This hunt hypothesis identifies the execution of known .NET-based red and black team reconnaissance or testing tools by analyzing process names to distinguish legitimate security activities from potential adversary tooling. Proactively hunting for these indicators in Azure Sentinel allows the SOC team to validate authorized security operations, reduce false positives during incident response, and detect unauthorized use of similar frameworks by malicious actors.

YARA Rule

rule HKTL_NET_NAME_aspnetcore_bypassing_authentication {
    meta:
        description = "Detects .NET red/black-team tools via name"
        reference = "https://github.com/jackowild/aspnetcore-bypassing-authentication"
        author = "Arnim Rupp"
        date = "2021-01-22"
    strings:
        $name = "aspnetcore-bypassing-authentication" 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,” along with suggested filters or exclusions:

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