SEKOIA_Launcher_Win_Stealthmutant_Bat_Launcher

rule SEKOIA_Launcher_Win_Stealthmutant_Bat_Launcher : FILE
{
	meta:
		description = "StealthMutant/StealthVector bat launcher"
		author = "Sekoia.io"
		id = "7452291f-2244-469e-bb7c-5eff1ca17aa2"
		date = "2021-08-26"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/launcher_win_stealthmutant_bat_launcher.yar#L1-L26"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "06ae4bc3ed938738dfca10c182a6a2363aa6aa70e730aefd41f6fe73c675785d"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "set \"WORK_DIR=" ascii
		$s2 = "set \"DLL_NAME=" ascii
		$s3 = "set \"SERVICE_NAME=" ascii
		$s4 = "set \"DISPLAY_NAME=" ascii
		$s5 = "set \"DESCRIPTION=" ascii
		$start = "@echo off" ascii
		$end = "net start \"%SERVICE_NAME%\"" ascii

	condition:
		uint16( 0 ) != 0x5A4D and all of ( $s* ) and filesize < 2KB and $start at 0 and $end in ( filesize -30 .. filesize )
}