SEKOIA_Hacktool_Earthworm_Strings

rule SEKOIA_Hacktool_Earthworm_Strings : FILE
{
	meta:
		description = "Detects Mac/Win/Linux EarthWorm based on strings"
		author = "Sekoia.io"
		id = "6c9b0225-8c41-49f9-9745-245bc7ef942f"
		date = "2022-02-08"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/hacktool_earthworm_strings.yar#L1-L22"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "0460c62fefc3d594ca758a37fbe1716182ffdca2920fedd32a707f7117702176"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "the read url is %s"
		$ = "--> %3d <-- (close)used tunnel %d , unused tunnel %d"
		$ = "ssocksd 0.0.0.0:%d <--[%4d usec]--> socks server"
		$ = "could not create one way tunnel"

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a or uint32be( 0 ) == 0xcffaedfe ) and filesize < 100KB and 3 of them
}