SEKOIA_Tool_Ssf_Strings

rule SEKOIA_Tool_Ssf_Strings : FILE
{
	meta:
		description = "Detects SSF based on strings"
		author = "Sekoia.io"
		id = "47fc3df8-a153-4045-a5f0-ed30df662984"
		date = "2024-05-31"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_ssf_strings.yar#L1-L23"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "a6fa09a25c90e00466a2b59f8c604084996224c93021ad72ed8705bf05da5d97"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "could NOT read SSF reply"
		$ = "SSF reply NOT ok {}"
		$ = "SSF reply OK"
		$ = "SSF protocol error {}"
		$ = "SSF reply ok"
		$ = "SSF version NOT read {}"
		$ = "SSF version {}"
		$ = "SSF version NOT supported {}"

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