SEKOIA_Apt_Blackwood_Nspx30_Plugin

rule SEKOIA_Apt_Blackwood_Nspx30_Plugin : FILE
{
	meta:
		description = "Detects plugins of NSPX30 backdoor based on RTTI and rundll32 string"
		author = "Sekoia.io"
		id = "ef8e0d51-c78c-426b-8008-910e27546f23"
		date = "2024-01-29"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_blackwood_nspx30_plugin.yar#L1-L17"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "cf7c232a5a817ff5c0da04744abf99ed2fcea587e3e6f6e8bf3aef7ca8f2b51b"
		score = 75
		quality = 76
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = {2E 3F 41 56 43 43 61 62 69 6E 65 74 40 40}
		$s2 = {2E 3F 41 56 43 45 6E 63 6F 64 65 72 40 40}
		$s3 = "rundll32.exe \"%hs\",#1" wide

	condition:
		uint16be( 0 ) == 0x4d5a and filesize < 1MB and all of them
}