SEKOIA_Exploit_Linux_Eop_Dirtyc0W_Strings

rule SEKOIA_Exploit_Linux_Eop_Dirtyc0W_Strings : FILE
{
	meta:
		description = "Detects DirtyCow exploit"
		author = "Sekoia.io"
		id = "f0551e56-b08f-4f6f-81df-f30fbb8ee7b8"
		date = "2023-12-08"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/exploit_linux_eop_dirtyc0w_strings.yar#L1-L17"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "70f0dda642e7892e35c1afabb4fa6a9fe62ad82d5aa2d90787e83809bc6f5859"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "DirtyCow root privilege escalation"
		$ = "Backing up %s to /tmp/bak"
		$ = "(o o)_____/"

	condition:
		uint32be( 0 ) == 0x7f454c46 and filesize < 1MB and all of them
}