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Disclosed hacktool set (old stuff) - file ArtTrayHookDll.dll

yara HIGH 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: 2026-07-29T11:00:00Z · Confidence: medium

Hunt Hypothesis

This hypothesis detects adversaries deploying legacy hacking tools like ArtTrayHookDll.dll to establish persistence and monitor user activity within the environment. The SOC team should proactively hunt for this artifact in Azure Sentinel because its presence often indicates a dormant or overlooked threat that could be leveraged for lateral movement, despite being classified as older software.

YARA Rule

rule ArtTrayHookDll {
	meta:
		description = "Disclosed hacktool set (old stuff) - file ArtTrayHookDll.dll"
		author = "Florian Roth"
		date = "23.11.14"
		score = 60
		hash = "4867214a3d96095d14aa8575f0adbb81a9381e6c"
	strings:
		$s0 = "ArtTrayHookDll.dll" fullword ascii
		$s7 = "?TerminateHook@@YAXXZ" fullword ascii
	condition:
		all of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 2 string patterns in its detection logic.

False Positive Guidance

Here are 5 specific false positive scenarios for the detection rule targeting ArtTrayHookDll.dll, along with recommended filters and exclusions:

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