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Check Qemu Description

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: 2026-04-18T16:05:06Z · Confidence: medium

Hunt Hypothesis

The Check Qemu Description rule detects potential use of virtualization software by identifying suspicious QEMU-related descriptions in system artifacts, which may indicate adversary use of virtual environments to evade detection. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate potential evasion tactics used by adversaries operating in virtualized environments.

YARA Rule

rule Check_Qemu_Description
{
	meta:
		Author = "Nick Hoffman"
		Description = "Checks for QEMU systembiosversion key"
		Sample = "de1af0e97e94859d372be7fcf3a5daa5"
	strings:
		$key = "HARDWARE\\Description\\System" nocase wide ascii
		$value = "SystemBiosVersion" nocase wide ascii
		$data = "QEMU" wide nocase ascii
	condition:
		all of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 3 string patterns in its detection logic.

False Positive Guidance

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