SEKOIA_Exploit_Linux_Eop_Ubuntu_Overlayfs_Local_Privesc_Strings

rule SEKOIA_Exploit_Linux_Eop_Ubuntu_Overlayfs_Local_Privesc_Strings : FILE
{
	meta:
		description = "Detects Ubuntu OverlayFS Local Privesc exploit"
		author = "Sekoia.io"
		id = "5e0e73f5-4cb3-4a79-adac-578b17ed7660"
		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_ubuntu_overlayfs_local_privesc_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "48ff9d2a10eef1e9b9088ba4a53aa77f43324e5d51da65b65a5829276067f011"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "./ovlcap"
		$ = "rm -rf '%s/'"
		$ = "./ovlcap/work"
		$ = "./ovlcap/lower"
		$ = "./ovlcap/upper"
		$ = "./ovlcap/merge"

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