SEKOIA_Apt_Mustangpanda_Zpakage

rule SEKOIA_Apt_Mustangpanda_Zpakage : FILE
{
	meta:
		description = "Detect obfuscation seen in ZPAKAGE"
		author = "Sekoia.io"
		id = "a4767d12-5058-4a26-be62-0cec685917bd"
		date = "2023-03-27"
		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_zpakage.yar#L1-L31"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "711c0e83f4e626a7b54e3948b281a71915a056c5341c8f509ecba535bc199bee"
		logic_hash = "52ad51589ca154fbf6e5829a2c80a9b811809288bed6995820a0ca8aa218d8ef"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$chunk_1 = {
        88 94 1D ?? ?? ?? ??
        8A 84 1D ?? ?? ?? ??
        83 ?? ??
        88 84 1D ?? ?? ?? ??
        8A 84 1D ?? ?? ?? ??
        83 ?? ??
        88 84 1D ?? ?? ?? ??
        8A 84 1D ?? ?? ?? ??
        83 ?? ??
        88 84 1D ?? ?? ?? ??
        0F BE 8C 1D ?? ?? ?? ??
        0F BE 84 1D ?? ?? ?? ??
        }

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 1MB and filesize < 11MB and #chunk_1 > 20
}