DITEKSHEN_MALWARE_Win_Romcom_Dropper

import "pe"

rule DITEKSHEN_MALWARE_Win_Romcom_Dropper : FILE
{
	meta:
		description = "Hunt for RomCom worker"
		author = "ditekShen"
		id = "1b77122d-95d7-535d-897e-b542da17f499"
		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#L10324-L10335"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "89f62f71e5870c1e5d14bc32dd3508da620f5fa85494251c69682eb09d630029"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "\\REGISTRY\\MACHINE\\SOFTWARE\\Classes" wide nocase
		$s2 = "\\REGISTRY\\USER" wide nocase
		$s3 = "BINARY" fullword wide
		$s4 = "POST" fullword wide

	condition:
		uint16( 0 ) == 0x5a4d and pe.is_dll ( ) and pe.number_of_exports == 1 and pe.exports ( "Main" ) and 3 of them
}