SEKOIA_Unk_Quad7_Updtae_Reverse_Shell_Strings

rule SEKOIA_Unk_Quad7_Updtae_Reverse_Shell_Strings : FILE
{
	meta:
		description = "Reverse shell used by Quad7 operators"
		author = "Sekoia.io"
		id = "02d5394e-734c-4744-b293-1bf96bf1518c"
		date = "2024-08-19"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/unk_quad7_updtae_reverse_shell_strings.yar#L1-L25"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "40b5ac87ff87634c48fdd2cf64ccb66b"
		hash = "4b8e97260d9ef6ca774675be682d9c8c"
		logic_hash = "0e816716d4d7fd35617b1ac96ae99d68d5b96f64f8bef83d0f6aba2a3fbd9326"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "User-Agent: IOT"
		$ = "/iot/post"
		$ = "vender"
		$ = "Response:  %s"
		$ = "cmdNum"
		$ = "UPDTAE"
		$ = "cmdResult"

	condition:
		uint32be( 0 ) == 0x7f454c46 and filesize < 5MB and 4 of them
}