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MetrowerksCodeWarriorDLLv20

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: 2026-08-19T11:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies the presence of legacy Metrowerks CodeWarrior DLL components that may indicate outdated development environments or potential supply chain risks within the Azure Sentinel environment. Proactive hunting for these artifacts is essential to assess their necessity and mitigate vulnerabilities associated with unsupported software that could serve as an entry point for adversaries exploiting known weaknesses in older toolchains.

YARA Rule

rule MetrowerksCodeWarriorDLLv20
{
      meta:
		author="malware-lu"
strings:
		$a0 = { 55 89 E5 53 56 57 8B 75 0C 8B 5D 10 83 FE 01 74 05 83 FE 02 75 12 53 56 FF 75 08 E8 6E FF FF FF 09 C0 75 04 31 C0 EB 21 53 56 FF 75 08 E8 [4] 89 C7 09 F6 74 05 83 FE 03 75 0A 53 56 FF 75 08 E8 47 FF FF FF 89 F8 8D 65 F4 5F 5E 5B 5D C2 0C 00 C9 }

condition:
		$a0
}

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 MetrowerksCodeWarriorDLLv20 detection rule in a modern enterprise environment, along with suggested filters or exclusions:

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