DITEKSHEN_MALWARE_Win_Lockdown

rule DITEKSHEN_MALWARE_Win_Lockdown : FILE
{
	meta:
		description = "Detects Lockdown / cantopen ransomware"
		author = "ditekSHen"
		id = "793df99d-016a-5f96-9ff9-76d3f08e0dd2"
		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#L9463-L9476"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "a9bc2f514730703f3edf78a61f1bc357eee12b3289fc7491197c3b885286ca7e"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$s1 = "BgIAAACkAABSU0E" wide
		$s2 = ".cantopen" fullword wide
		$s3 = "\\HELP_DECRYPT_YOUR_FILES.txt" wide
		$s4 = "SALT" fullword wide
		$s5 = "$4e677664-9a63-458e-a365-deb792509557" fullword ascii
		$s6 = "CreateEncryptor" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 4 of them
}