DITEKSHEN_MALWARE_Win_Romcom_Worker

import "pe"

rule DITEKSHEN_MALWARE_Win_Romcom_Worker : FILE
{
	meta:
		description = "Hunt for RomCom worker"
		author = "ditekShen"
		id = "ce545a33-731c-5ecd-b02e-cedf24f75cc7"
		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#L10309-L10322"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "488db046458585882a4709438042b57e02d7dbc06483fdfdfc463a64ee8db203"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$s1 = "UpdateProcThreadAttribute" fullword ascii
		$s2 = "WriteFile" fullword ascii
		$s3 = "GetAdaptersAddresses" fullword ascii nocase
		$s4 = /inflate\s\d+\.\d+\.\d+\sCopyright/ ascii
		$s5 = "SetHandleInformation" fullword ascii
		$s6 = "PeekNamedPipe" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and pe.is_dll ( ) and pe.number_of_exports == 1 and pe.exports ( "Main" ) and all of them
}