DITEKSHEN_MALWARE_Linux_Buhti

rule DITEKSHEN_MALWARE_Linux_Buhti : FILE
{
	meta:
		description = "Detects Buhti Ransomware"
		author = "ditekSHen"
		id = "a50b8c34-e9e2-5466-80a1-b0ab805c68be"
		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#L9630-L9643"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "1bab3202dbeaf088b233c3ab1056c357d156b7eef3111bea997b1c610a27f561"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "buhtiRansom" ascii
		$x2 = "://satoshidisk.com/pay/" ascii
		$s1 = "main.encrypt_file" fullword ascii
		$s2 = "/path/to/be/encrypted" ascii
		$s3 = "Restore-My-Files.txt" ascii
		$s4 = ".buhti390625" ascii

	condition:
		uint16( 0 ) == 0x457f and ( all of ( $x* ) or ( 1 of ( $x* ) and 3 of ( $s* ) ) or 5 of them )
}