SEKOIA_Webshell_Icesword_Strings

rule SEKOIA_Webshell_Icesword_Strings : FILE
{
	meta:
		description = "Detects icesword webshell"
		author = "Sekoia.io"
		id = "2c6b3cec-4200-4386-8cd5-4004c9b5b96a"
		date = "2024-11-22"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/webshell_icesword_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "0447352827e61696304a8e3d34e1d270"
		hash = "f49cfcda0abdefa385eda7ec7e7a5411"
		hash = "e1518388375ba772ed20503ec6dc6c8a"
		hash = "ecf08cd6af127e01f913354529174a23"
		logic_hash = "25ea8c1f4756595e63f09dfdfd1cb0e9bbf1d05e46150e22993de95d9f758385"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "&fsAction=rename&newName="
		$ = "&fsAction=copyto&dstPath="

	condition:
		2 of them and filesize < 100KB
}