DITEKSHEN_MALWARE_Win_Qnapcrypt

rule DITEKSHEN_MALWARE_Win_Qnapcrypt : FILE
{
	meta:
		description = "Detects QnapCrypt/Lockedv1/Cryptfile2 ransomware"
		author = "ditekSHen"
		id = "3ef5643a-f2af-5d62-8927-e46679e069c2"
		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#L3579-L3607"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "68fc3f0503d82295ffa5bfb49bda8b790142913217775a2812e3965a6c9a1fe1"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$go = "Go build ID:" ascii
		$s1 = "Encrypting %s..." ascii
		$s2 = "\\Start Menu\\Programs\\StartUp\\READMEV" ascii
		$s3 = "main.deleteRecycleBin" ascii
		$s4 = "main.encryptFiles" ascii
		$s5 = "main.antiVirtualBox" ascii
		$s6 = "main.antiVmware" ascii
		$s7 = "main.deleteShadows" ascii
		$s8 = "main.delUAC" ascii
		$s9 = "main.KillProcess" ascii
		$s10 = "main.delExploit" ascii
		$s11 = "main.encrypt" ascii
		$s12 = "main.ClearLogDownload" ascii
		$s13 = "main.ClearLog" ascii
		$s14 = "main.EndEncrypt" ascii
		$s15 = "main.RunFuckLogAndSoft" ascii
		$s16 = "main.ClearUsercache" ascii
		$s17 = "main.FirstDuty" ascii
		$s18 = ".lockedv1" ascii
		$s19 = "WSAStartup\\clear.bat\\ngrok.exe\\video.mp4" ascii
		$s20 = "net stop " ascii

	condition:
		uint16( 0 ) == 0x5a4d and $go and 6 of ( $s* )
}