SIGNATURE_BASE_MAL_APT_NK_Andariel_Tigerrat_Crowdsourced_Rule

rule SIGNATURE_BASE_MAL_APT_NK_Andariel_Tigerrat_Crowdsourced_Rule : FILE
{
	meta:
		description = "Detects the Tiger RAT variant used by Andariel"
		author = "CISA.gov (modified by Florian Roth, Nextron Systems)"
		id = "6be65222-7d3c-5ff5-a9c7-d91dcf1deaa6"
		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#L395-L424"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "5d203d8c7e624796571f4597f70be0b8303f21c096640f25018cad29d4abc05b"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$m1 = ".?AVModuleKeyLogger@@" fullword ascii
		$m2 = ".?AVModulePortForwarder@@" fullword ascii
		$m3 = ".?AVModuleScreenCapture@@" fullword ascii
		$m4 = ".?AVModuleShell@@" fullword ascii
		$s1 = "\\x9891-009942-xnopcopie.dat" fullword wide
		$s2 = "(%02d : %02d-%02d %02d:%02d:%02d)--- %s[Clipboard]" fullword ascii
		$s3 = "[%02d : %02d-%02d %02d:%02d:%02d]--- %s[Title]" fullword ascii
		$s4 = "del \"%s\"%s \"%s\" goto " ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( all of ( $s* ) or ( all of ( $m* ) and 1 of ( $s* ) ) or ( 2 of ( $m* ) and 2 of ( $s* ) ) )
}