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MinGWGCC3x

yara LOW Yara-Rules
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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: 2026-08-18T11:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies the presence of MinGW GCC 3.x compiler artifacts within the environment, signaling potential adversary activity involving custom tooling or legacy build processes that may indicate early-stage lateral movement or malware development. Proactive hunting for these signatures in Azure Sentinel is essential to uncover hidden compilation activities that could serve as indicators of a threat actor establishing persistence or staging payloads before executing more complex attack chains.

YARA Rule

rule MinGWGCC3x
{
      meta:
		author="malware-lu"
strings:
		$a0 = { 55 89 E5 83 EC 08 C7 04 24 ?? 00 00 00 FF 15 [4] E8 [2] FF FF [8] 55 }

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 5 specific false positive scenarios for the MinGWGCC3x detection rule in an enterprise environment, including suggested filters and exclusions:

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