DITEKSHEN_MALWARE_Win_Kitty

rule DITEKSHEN_MALWARE_Win_Kitty : FILE
{
	meta:
		description = "Detects HelloKitty ransomware, triggers on FIVEHANDS"
		author = "ditekSHen"
		id = "4147294a-7eff-595a-ad4f-8a84ffff960f"
		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#L4829-L4847"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "3a36755c81ec70c127bb73448fc29325444b85b5f0704327fc81975c2af2e99e"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Kitty" wide
		$s2 = "-path" fullword wide
		$s3 = "select * from Win32_ShadowCopy" fullword wide
		$s4 = "Win32_ShadowCopy.ID='%s'" fullword wide
		$s5 = "programdata" fullword wide
		$s6 = "$recycle.bin" fullword wide
		$s7 = ".crypt" fullword wide
		$s8 = "%s/secret/%S" wide
		$s9 = "decrypts3nln3tic.onion" wide
		$n1 = "read_me_lkd.txt" wide
		$n2 = "DECRYPT_NOTE.txt" wide

	condition:
		uint16( 0 ) == 0x5a4d and ( 5 of ( $s* ) or 1 of ( $n* ) and 4 of ( $s* ) )
}