DITEKSHEN_MALWARE_Win_Badjoke

rule DITEKSHEN_MALWARE_Win_Badjoke : FILE
{
	meta:
		description = "Detects BadJoke / Witch"
		author = "ditekSHen"
		id = "082727d5-618f-542d-93ca-ba93be16cd80"
		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#L8816-L8831"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "4699a772bcd50d2fe43740df59a4c56598ba43ebcc18acbf8ec401b6f5a01fe6"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "msdownld.tmp" fullword ascii
		$s2 = "UPDFILE%lu" fullword ascii
		$s3 = "Command.com /c %s" fullword ascii
		$s4 = "launch.cmd" fullword ascii
		$s5 = "virus.vbs" fullword ascii
		$s6 = "virus.py" fullword ascii
		$m1 = "Message from Google Virus" ascii
		$m2 = "you cannot get rid of this virus" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( all of ( $m* ) or all of ( $s* ) or ( 1 of ( $m* ) and 2 of ( $s* ) ) )
}