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Disclosed hacktool set (old stuff) - file EditKeyLogReadMe.txt

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: 2026-07-29T23:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies adversaries deploying legacy hacking tools that utilize a specific ReadMe text file to establish persistence or signal command-and-control activity within the environment. Proactively hunting for this artifact in Azure Sentinel is critical because older toolsets often lack modern security signatures, making them high-value targets for attackers seeking to exploit unmonitored or overlooked infrastructure components.

YARA Rule

rule EditKeyLogReadMe {
	meta:
		description = "Disclosed hacktool set (old stuff) - file EditKeyLogReadMe.txt"
		author = "Florian Roth"
		date = "23.11.14"
		score = 60
		hash = "dfa90540b0e58346f4b6ea12e30c1404e15fbe5a"
	strings:
		$s0 = "editKeyLog.exe KeyLog.exe," fullword ascii
		$s1 = "WinEggDrop.DLL" fullword ascii
		$s2 = "nc.exe" fullword ascii
		$s3 = "KeyLog.exe" fullword ascii
		$s4 = "EditKeyLog.exe" fullword ascii
		$s5 = "wineggdrop" fullword ascii
	condition:
		3 of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 6 string patterns in its detection logic.

False Positive Guidance

Here are 5 specific false positive scenarios for the rule “Disclosed hacktool set (old stuff) - file EditKeyLogReadMe.txt”, including suggested filters and exclusions:

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