SEKOIA_Apt_Badmagic_Malicious_Lnk

rule SEKOIA_Apt_Badmagic_Malicious_Lnk : FILE
{
	meta:
		description = "Detect LNK used by BadMagic to execute MSI payloads."
		author = "Sekoia.io"
		id = "731bd51d-c4e4-4efb-9fa8-f981a8555ed3"
		date = "2023-05-15"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_badmagic_malicious_lnk.yar#L1-L19"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "b83749c71cefb485f8bbea1d465fc477de159e086efa04ebce4d0778a203ed89"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "/i http" wide
		$ = ".msi /quiet" wide
		$ = "%WINDIR%\\System32\\msiexec.exe"

	condition:
		uint32be( 0 ) == 0x4c000000 and filesize < 1KB and all of them
}