SEKOIA_Apt_Flightnight_Malicious_Lnk

rule SEKOIA_Apt_Flightnight_Malicious_Lnk : FILE
{
	meta:
		description = "Detects malicious LNK used by FlightNight"
		author = "Sekoia.io"
		id = "06f33ece-ac9f-4dd3-98fb-cd69305ee995"
		date = "2024-04-02"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_flightnight_malicious_lnk.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "3446852709fe425b2c053ffdb9c078cf20e442ef50fe20402d3b4c9e9d8b543a"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s0 = "/c start /B " wide
		$s1 = ".exe &" wide
		$s2 = ".pdf" wide
		$s3 = "%CD%" wide

	condition:
		uint32be( 0 ) == 0x4c000000 and $s1 in ( @s0 .. @s2 ) and $s1 in ( @s0 .. @s0 + 100 ) and $s3
}