DITEKSHEN_MALWARE_Win_Nppspy

import "pe"

rule DITEKSHEN_MALWARE_Win_Nppspy : FILE
{
	meta:
		description = "Detects NPPSpy / Ntospy"
		author = "ditekShen"
		id = "3867ba96-1162-5693-b58e-fc6fa04d880a"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L11305-L11325"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "53e929b52dddd5e3d060d2dd9937411f1ff215be4d3c67f5935c2a3fbab006d6"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "ntskrnl.dll" fullword ascii
		$s2 = "PasswordStealing.dll" fullword ascii
		$s3 = "ntoskrnl.dll" fullword ascii
		$s4 = "\\programdata\\packag~" ascii
		$s5 = "NPPSPY.dll" fullword ascii
		$s6 = "MSControll.dll" fullword ascii
		$s7 = "\\Windows\\Temp\\" ascii
		$s8 = "\\NPPSpy\\" ascii
		$s9 = "NPGetCaps" fullword ascii
		$s10 = "NPLogonNotify" fullword ascii
		$path = "\\GrzegorzTworek\\" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( pe.is_dll ( ) and filesize < 110KB and pe.number_of_exports == 2 and ( ( pe.exports ( "NPGetCaps" ) and pe.exports ( "NPLogonNotify" ) ) or ( 1 of ( $s* ) and ( pe.exports ( "NPGetCaps" ) or pe.exports ( "NPLogonNotify" ) ) ) ) ) or ( ( $path ) and any of ( $s* ) ) )
}