/*
	Yara Rule Set
	Author: Florian Roth
	Date: 2015-05-14
	Identifier: CVE-2015-1674
*/

/* Rule Set ----------------------------------------------------------------- */

rule CVE_2015_1674_CNGSYS {
	meta:
		description = "Detects exploits for CVE-2015-1674"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://www.binvul.com/viewthread.php?tid=508"
		date = "2015-05-14"
		hash = "af4eb2a275f6bbc2bfeef656642ede9ce04fad36"
		id = "1161b395-a19e-5aac-8416-8a4e60aeca37"
	strings:
		$s1 = "\\Device\\CNG" wide
		
		$s2 = "GetProcAddress" fullword ascii
		$s3 = "LoadLibrary" ascii
		$s4 = "KERNEL32.dll" fullword ascii
		$s5 = "ntdll.dll" fullword ascii
	condition:
		uint16(0) == 0x5a4d and filesize < 60KB and all of them
}