DITEKSHEN_MALWARE_Win_Mountlocker

rule DITEKSHEN_MALWARE_Win_Mountlocker : FILE
{
	meta:
		description = "Detects MountLocker ransomware"
		author = "ditekSHen"
		id = "0590d08d-1ee8-5dfe-af12-15b149acd2d6"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L5725-L5740"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "30bc601fef60cc1c9d8bff5dd3f8a53214f088b74eb24fe2369f5664613e0eaf"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "] locker.dir.check > " ascii wide
		$s2 = "] locekr.kill." ascii wide
		$s3 = "] locker.worm" ascii wide
		$s4 = "%CLIENT_ID%" fullword ascii
		$s5 = "RecoveryManual.html" ascii wide
		$s6 = "RECOVERY MANUAL" ascii
		$s7 = ".ReadManual.%0.8X" ascii wide
		$s8 = "/?cid=%CLIENT_ID%" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 3 of them
}