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Upackv032BetaPatchDwing

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: 2026-09-02T11:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies potential adversary activity involving the unpacking of beta patch files that may contain embedded malicious logic or obfuscated payloads designed to evade static analysis. A proactive hunt is essential in Azure Sentinel to uncover early-stage reconnaissance attempts where attackers leverage legitimate-looking updates to establish a foothold before triggering higher-severity alerts.

YARA Rule

rule Upackv032BetaPatchDwing
{
      meta:
		author="malware-lu"
strings:
		$a0 = { BE 88 01 [2] AD 50 ?? AD 91 F3 A5 }

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 4 specific false positive scenarios for the Upackv032BetaPatchDwing detection rule, along with targeted filtering strategies:

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