DITEKSHEN_MALWARE_Win_Robbinhood

rule DITEKSHEN_MALWARE_Win_Robbinhood : FILE
{
	meta:
		description = "Robbinhood ransomware payload"
		author = "ditekSHen"
		id = "a5066a22-3c87-5e9f-a94f-5a44af2f96fd"
		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#L765-L787"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "f1c4226ed5cb1583418d5ef0efc2c2b5bc3cfe7f148f359c5d432fd660331a46"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Ransomware.Robbinhood"

	strings:
		$go = "Go build ID:" ascii
		$cmd1 = "cmd.exe /c" ascii
		$cmd2 = "net use * /DELETE" nocase ascii
		$cmd3 = "sc.exe stop" ascii
		$cmd4 = "vssadmin resize shadowstorage" nocase ascii
		$s1 = /Skipping\s(file|dir)/ ascii
		$s2 = "Encrypt[ERR] GET Size:" ascii
		$s3 = ".taskkilltasklistunknown(" ascii
		$s4 = ".sysvssadmin.exewevtutil.exe MB released" ascii
		$s5 = ".sysvssadmin.exewevtutil.exewinlogin.exewinlogon.exe MB released" ascii
		$s6 = ".enc_robbinhood" ascii
		$s7 = "c:\\windows\\temp\\pub.key" nocase ascii
		$s8 = "main.CoolMaker" ascii
		$s9 = "/valery/go/src/oldboy/" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( $go and 1 of ( $cmd* ) and 3 of ( $s* ) )
}