SEKOIA_Apt_Boldmove_Strings

rule SEKOIA_Apt_Boldmove_Strings : FILE
{
	meta:
		description = "Detects BOLDMOVE via strings"
		author = "Sekoia.io"
		id = "0458e282-f92f-4600-964a-de6b66b4a82d"
		date = "2023-01-16"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_boldmove_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "71649451b88629da1779c0856b2f1f60f87501962c69556f7943b049688a2d96"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "cwd=%s" ascii wide
		$s2 = "executable=%s" ascii wide
		$s3 = "curl/6.12.34" ascii wide
		$s4 = "www.example.com" ascii wide
		$s5 = "GET /ws HTTP/1.1" ascii wide

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 4MB and 4 of them
}