SEKOIA_Backdoor_Powershellempire_Batlauchers

rule SEKOIA_Backdoor_Powershellempire_Batlauchers : FILE
{
	meta:
		description = "Detect BAT launchers for Empire"
		author = "Sekoia.io"
		id = "ad371665-ec59-45c8-9d99-2a675842c384"
		date = "2022-04-15"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/backdoor_powershellempire_batlauchers.yar#L1-L17"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "0453c739ad936b0cc5ed2e36ba4a011a90600b74ca23c08165c23a3e63fe60e9"
		score = 75
		quality = 74
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "powershell -noP -sta -w 1 -enc  SQB" nocase wide ascii
		$ = "powershell -ep bypass -noP -sta -w 1 -enc SQB" nocase wide ascii
		$ = "-nol -nop -ep bypass \"[IO.File]::ReadAllText('%~f0')|iex" nocase wide ascii

	condition:
		any of them and filesize < 1MB
}