DITEKSHEN_MALWARE_Win_Pingback

rule DITEKSHEN_MALWARE_Win_Pingback : FILE
{
	meta:
		description = "Detects PingBack ICMP backdoor"
		author = "ditekSHen"
		id = "ecb313b6-f923-5b6d-a4d7-a4650817ed84"
		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#L5742-L5761"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "c5fa9ecefca1188ba5e81c0518f74023884ad0f66718fc030601cb458bdf2f12"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Sniffer ok!" fullword ascii
		$s2 = "recv icmp packet!" fullword ascii
		$s3 = "WSASocket() failed: %d" fullword ascii
		$s4 = "file on remote computers success" ascii
		$s5 = "listen port error!" fullword ascii
		$s6 = "\\PingBackService" ascii
		$c1 = "exec" fullword ascii
		$c2 = "rexec" fullword ascii
		$c3 = "exep" fullword ascii
		$c4 = "download" fullword ascii
		$c5 = "upload" fullword ascii
		$c6 = "shell" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 3 of ( $s* ) or all of ( $c* ) or ( 4 of ( $c* ) and 2 of ( $s* ) ) )
}