SEKOIA_Generic_Tor_Hidden_Service_Leading_To_Winports

rule SEKOIA_Generic_Tor_Hidden_Service_Leading_To_Winports : FILE
{
	meta:
		description = "Detects malicious TOR redirection affecting RDP, NetBios"
		author = "Sekoia.io"
		id = "1e5c469b-f721-44af-87b3-1adf423719c1"
		date = "2023-09-07"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/generic_tor_hidden_service_leading_to_winports.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "39db199ba7fede8df4bdb505b071240dda96b74f66f818f90047dad338dc4a72"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "HiddenServiceDir "
		$s2 = "SocksPort "
		$s3 = "HiddenServicePort "
		$s4 = ":3389"
		$s5 = ":445"

	condition:
		$s1 and $s2 and ( $s4 in ( @s3 .. @s3 + 100 ) or $s5 in ( @s3 .. @s3 + 100 ) ) and filesize < 2000
}