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XCRv012

yara LOW Yara-Rules
community
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: 2026-08-15T11:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies specific file artifacts matching the XCRv012 YARA signature to uncover potential early-stage malware or suspicious executables that may evade standard heuristic scans. Proactively hunting for this indicator in Azure Sentinel allows the SOC team to validate low-severity alerts against actual threat intelligence, ensuring that subtle signs of compromise are not overlooked before they escalate into significant incidents.

YARA Rule

rule XCRv012
{
      meta:
		author="malware-lu"
strings:
		$a0 = { 60 9C E8 [4] 8B DD 5D 81 ED [4] 89 9D }

condition:
		$a0 at pe.entry_point
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 1 string patterns in its detection logic.

False Positive Guidance

Here are 4 specific false positive scenarios for the XCRv012 detection rule, including targeted filters and exclusions suitable for an enterprise environment:

Original source: https://github.com/Yara-Rules/rules/blob/main/packers/packer.yar