DITEKSHEN_MALWARE_Win_Babuk

rule DITEKSHEN_MALWARE_Win_Babuk : FILE
{
	meta:
		description = "Detects Babuk ransomware"
		author = "ditekSHen"
		id = "6bb7093f-bbef-5b43-b4f9-be72ae4ef319"
		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#L3652-L3674"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "5ca5c5106747cf8f4ccd5df4ddbc78321fea3c8f533cb807a704d270eb956007"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "ecdh_pub_k.bin" wide
		$s2 = "How To Restore Your Files.txt" wide
		$s3 = /(babuk|babyk)\s(ransomware|locker)/ ascii nocase
		$s4 = "/login.php?id=" ascii
		$s5 = "http://babuk" ascii
		$s6 = "bootsect.bak" fullword wide
		$s7 = "Can't open file after killHolder" ascii
		$s8 = "Can't OpenProcess" ascii
		$s9 = "DoYouWantToHaveSexWithCuongDong" ascii
		$arg1 = "-lanfirst" fullword ascii
		$arg2 = "-lansecond" fullword ascii
		$arg3 = "-nolan" fullword ascii
		$arg4 = "shares" fullword wide
		$arg5 = "paths" fullword wide
		$arg6 = "gdebug" fullword wide

	condition:
		uint16( 0 ) == 0x5a4d and ( 3 of ( $s* ) or ( 3 of ( $arg* ) and 2 of ( $s* ) ) )
}