SEKOIA_Apt_Coathanger_Beacon

rule SEKOIA_Apt_Coathanger_Beacon : FILE
{
	meta:
		description = "Detects COATHANGER beacon"
		author = "Sekoia.io"
		id = "cc201479-016a-46d2-a9e2-41b4914ce618"
		date = "2024-02-07"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_coathanger_beacon.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "e44496e62de8c885d5bd941819a97f4c0dd90ce2d0cfe9d042ab9590cc354ddb"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = {
        48 B8 47 45 54 20 2F 20 48 54
        48 89 45 B0 48 B8 54 50 2F 32 0A 48 6F 73
        48 89 45 B8 48 B8 74 3A 20 77 77 77 2E 67
        48 89 45 C0 48 B8 6F 6F 67 6C 65 2E 63 6F
        }

	condition:
		uint32( 0 ) == 0x464c457f and filesize < 5MB and any of them
}