DITEKSHEN_MALWARE_Win_Biopass_Dropper

rule DITEKSHEN_MALWARE_Win_Biopass_Dropper : FILE
{
	meta:
		description = "Detects Go BioPass dropper"
		author = "ditekSHen"
		id = "56037c79-59f7-587c-8f54-c9618e871f34"
		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#L7088-L7111"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "06f3b3ee38349ddcf9be7cbb7627d60fa673962409dde6e4badd112841a3ed19"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$go = "Go build ID:" ascii
		$s1 = "main.NetWorkStatus" ascii
		$s2 = "main.NoErrorRunFunction" ascii
		$s3 = "main.FileExist" ascii
		$s4 = "main.execute" ascii
		$s5 = "main.PsGenerator" ascii
		$s6 = "main.downFile" ascii
		$s7 = "main.Unzip" ascii
		$url1 = "https://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/" ascii
		$x1 = "SCHTASKS /Run /TN SYSTEM_CDAEMON" ascii
		$x2 = "SCHTASKS /Run /TN SYSTEM_SETTINGS" ascii
		$x3 = "SCHTASKS /Run /TN SYSTEM_TEST && SCHTASKS /DELETE /F /TN SYSTEM_TEST" ascii
		$x4 = ".exe /install /quiet /norestart" ascii
		$x5 = "exec(''import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\\''http" ascii
		$x6 = "powershell.exe -Command $" ascii
		$x7 = ".Path ='-----BEGIN RSA TESTING KEY-----" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( all of ( $s* ) or 5 of ( $x* ) or ( 1 of ( $url* ) and ( $go ) ) or 9 of them )
}