SIGNATURE_BASE_MAL_APT_NK_Andariel_Grease2

rule SIGNATURE_BASE_MAL_APT_NK_Andariel_Grease2 : FILE
{
	meta:
		description = "Detects the Grease2 malware family used by Andariel"
		author = "CISA.gov (modified by Florian Roth, Nextron Systems)"
		id = "4defbe08-b3c6-5ab9-9a57-cec57ff42d9a"
		date = "2024-07-25"
		modified = "2024-07-26"
		reference = "https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-207a"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_nk_andariel_jul24.yar#L330-L351"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "138fc915206e0c2834090ebc0a808913488121d51c17de3dbfadcb4099fbfa2f"
		score = 80
		quality = 85
		tags = "FILE"

	strings:
		$str_rdpconf = "emp\\RDPConf.exe"
		$str_rdpwinst = "emp\\RDPWInst.exe"
		$str_net_user = "net user"
		$str_admins_add = "net localgroup administrators"

	condition:
		uint16( 0 ) == 0x5A4D and all of them
}