SEKOIA_Apt_Implant_Xdealer_Linux_Variant_Strings

rule SEKOIA_Apt_Implant_Xdealer_Linux_Variant_Strings : FILE
{
	meta:
		description = "Detects XDealer linux variant"
		author = "Sekoia.io"
		id = "42690513-753f-4296-b641-4d3b59a5e5e1"
		date = "2024-03-22"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_implant_xdealer_linux_variant_strings.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "400beb53d0f7b7727962175c7c4f8dfccdfed56bb3978d3e847147e8ad7644fb"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "ls -l /proc/%s/exe"
		$ = "Linux_%s_%s_%u"
		$ = "chkconfig --add"
		$ = "cmd over return [%s]"
		$ = "touch   -d"
		$ = "%s can't be opened/n"
		$ = "/proc/%s/status"

	condition:
		uint32be( 0 ) == 0x7f454c46 and 3 of them and filesize < 1MB
}