← Back to SOC feed Coverage →

PACKWINv101p

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: 2026-08-21T11:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies potential malicious activity where adversaries utilize specific packing mechanisms to obfuscate executable files and evade signature-based defenses within the Windows environment. A proactive hunt is essential in Azure Sentinel to uncover stealthy threats that may bypass standard AV solutions by analyzing file characteristics and behavioral patterns associated with this YARA rule, ensuring early identification of low-severity but high-impact anomalies.

YARA Rule

rule PACKWINv101p
{
      meta:
		author="malware-lu"
strings:
		$a0 = { 8C C0 FA 8E D0 BC [2] FB 06 0E 1F 2E [4] 8B F1 4E 8B FE 8C DB 2E [4] 8E C3 FD F3 A4 53 B8 [2] 50 CB }

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 PACKWINv101p detection rule in an enterprise environment, along with suggested filters and exclusions:

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