SEKOIA_Ransomware_Win_Voidcrypt

rule SEKOIA_Ransomware_Win_Voidcrypt : FILE
{
	meta:
		description = "Detect the Limbozar / VoidCrypt ransomware"
		author = "Sekoia.io"
		id = "394033cc-20fe-4ced-8d77-5f1061bb8c96"
		date = "2021-10-07"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/ransomware_win_voidcrypt.yar#L1-L17"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "7e28bae5830df779bf2367482fb966f5cab691a6c8c474950f7442d8fec054a0"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "C:\\ProgramData\\pkey.txt" ascii
		$s2 = "C:\\ProgramData\\IDk.txt" ascii
		$s3 = "fuckyoufuckyoufuckyoufuckyou" ascii

	condition:
		uint16( 0 ) == 0x5A4D and all of them
}