SEKOIA_Tool_Iodine_Strings

rule SEKOIA_Tool_Iodine_Strings : FILE
{
	meta:
		description = "Detects iodine based on strings"
		author = "Sekoia.io"
		id = "029766cc-80fb-423d-adc5-8867c438c5d3"
		date = "2024-02-02"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_iodine_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "049b5af42d204061bd7e0c0294bb0abea492647dce8ec63fa3f296d1a19cb246"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "Sending DNS queries for %s to %s"
		$ = "No tun devices found, trying utun"
		$ = "iodine IP over DNS tunneling client"
		$ = "topdomain is the FQDN that is delegated to the tunnel endpoint."

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 1MB and 3 of them
}