DITEKSHEN_MALWARE_Win_WSHRAT

rule DITEKSHEN_MALWARE_Win_WSHRAT : FILE
{
	meta:
		description = "Detects WASHRAT"
		author = "ditekSHen"
		id = "e7940b7f-51dd-5a32-899b-64310f27bf3e"
		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#L10582-L10600"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "297bfe65815637a464e2a8fc23570c6e79694ffe0467d5898b7c845f1450de95"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$x1 = "WSH Rat v" wide
		$x2 = "SOFTWARE\\WSHRat" wide
		$x3 = "WSH Remote" wide nocase
		$x4 = "WSHRAT" wide nocase
		$s1 = "shellobj.regwrite \"HKEY_" ascii nocase
		$s2 = "shellobj.run(\"%comspec% /c" ascii nocase
		$s3 = "objhttpdownload.setrequestheader \"user-agent:\"," ascii nocase
		$s4 = "WScript.CreateObject(\"Shell.Application\").ShellExecute" ascii nocase
		$s5 = "objwmiservice.ExecQuery(\"select" ascii nocase
		$s6 = "httpobj.open(\"post\",\"http" ascii nocase
		$s7 = /(rdp|keylogger|get-pass|uvnc)\|http/ wide

	condition:
		uint16( 0 ) == 0x5a4d and ( 2 of ( $x* ) or ( 1 of ( $x* ) and 1 of ( $s* ) ) or ( 6 of ( $s* ) ) )
}