DITEKSHEN_MALWARE_Win_Aliencrypter

rule DITEKSHEN_MALWARE_Win_Aliencrypter : FILE
{
	meta:
		description = "Detects AlienCrypter injector/downloader/obfuscator"
		author = "ditekSHen"
		id = "af9e785a-bdec-5d3e-9a50-56f7f1a0507e"
		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#L2022-L2036"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "28a2a6e6d58fd6efbb5753a7be5b621a3eac546d45f9481b9dd2641cbe70b547"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = ".AlienRunPE." ascii wide
		$s2 = "RunAsNewUser_RunDLL" fullword wide
		$s3 = { 00 50 52 4f 43 45 53 53 5f 53 55 53 50 45 4e 44 5f 52 45 53 55 4d 45 00 64 6e 6c 69 62 2e 50 45 00 }
		$s4 = { 2e 41 6c 69 65 6e 52 75 6e 50 45 00 50 52 4f 43 45 53 53 5f 54 45 52 4d 49 4e 41 54 45 00 }
		$s5 = "@@@http" wide
		$resp1 = "</p><p>@@@77,90," ascii wide
		$resp2 = "</p><p>@@@HH,JA," ascii wide

	condition:
		( uint16( 0 ) == 0x5a4d and 3 of them ) or ( 1 of ( $resp* ) and 2 of ( $s* ) )
}