DITEKSHEN_MALWARE_Win_Cratpluginransomhansom

rule DITEKSHEN_MALWARE_Win_Cratpluginransomhansom : FILE
{
	meta:
		description = "Detects CRAT Hansom Ransomware plugin DLL"
		author = "ditekSHen"
		id = "0bfc97df-545f-5453-afe0-5777dc1c95b4"
		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#L2002-L2020"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "b22f6d22630f311241634513eb051df2b36af84a938c1ae1f5284e5a5d7d3077"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$cmd1 = "/f /im \"%s\"" wide
		$cmd2 = "add HKLM\\%s /v %s /t REG_DWORD /d %d /F" wide
		$cmd3 = "add HKCU\\%s /v %s /t REG_DWORD /d %d /F" wide
		$cmd4 = "\"%s\" a -y -ep -k -r -s -ibck -df -m0 -hp%s -ri1:%d \"%s\" \"%s\"" wide
		$s1 = "\\hansom.jpg" wide
		$s2 = "HansomMain" fullword ascii wide
		$s3 = "ExtractHansom" fullword ascii wide
		$s4 = "Hansom2008" fullword ascii
		$s5 = ".hansomkey" fullword wide
		$s6 = ".hansom" fullword wide
		$s7 = /Ransom_(x64|x32|Win64|Win32)_DllRelease\.dll/ fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( 2 of ( $cmd* ) and 2 of ( $s* ) ) or ( 4 of ( $s* ) and 1 of ( $cmd* ) ) or 6 of them )
}