SEKOIA_Tool_Yasso_Strings

rule SEKOIA_Tool_Yasso_Strings : FILE
{
	meta:
		description = "Detects Yasso based on strings"
		author = "Sekoia.io"
		id = "31ec7510-6770-4fde-b835-e8b12f8f2b30"
		date = "2023-06-21"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_yasso_strings.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "1d715b0962ba9ecbe11649ea85870a8f884f6dd7eda27b1f8eff0d7f5de8c765"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "Yasso/cmd.setting"
		$ = "Yasso/cmd.Client"
		$ = "Yasso/cmd.IdentifyResult"
		$ = "Yasso/cmd.RespLab"
		$ = "Go build ID"

	condition:
		uint16be( 0 ) == 0x4d5a and filesize > 15MB and filesize < 20MB and all of them
}