SEKOIA_Apt_Mustangpanda_Decrypt_Payload

rule SEKOIA_Apt_Mustangpanda_Decrypt_Payload : FILE
{
	meta:
		description = "Detects the decryption routine of DAT file"
		author = "Sekoia.io"
		id = "7b954007-0929-454d-8a10-05279a337f1b"
		date = "2022-12-08"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_mustangpanda_decrypt_payload.yar#L1-L27"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "dcc32580e351e605d21dc29558764c6fd85f8a9506de8e78f301459a5a2610b7"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$chunk_1 = {
        85 ??
        74 ??
        8B ??
        D1 EA
        A1 ?? ?? ?? ??
        03 C2
        A3 ?? ?? ?? ??
        30 04 29
        41
        3B ??
        72 EC
        }

	condition:
		filesize < 8MB and all of them
}