DITEKSHEN_MALWARE_Win_Dlagent05

rule DITEKSHEN_MALWARE_Win_Dlagent05 : FILE
{
	meta:
		description = "Detects an unknown dropper. Typically exisys as a DLL in base64-encoded gzip-compressed file embedded within another executable"
		author = "ditekSHen"
		id = "a8a72484-42be-5c5c-962b-75bed8acdf39"
		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#L3538-L3551"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "e8c7c03451bbfcba7a1ab02f8c1320ad50d17d2e990f0e2f89942faea2a1e531"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Trojan.DLAgent05"

	strings:
		$s1 = "MARCUS.dll" fullword ascii wide
		$s2 = "GZipStream" fullword ascii
		$s3 = "MemoryStream" fullword ascii
		$s4 = "proj_name" fullword ascii
		$s5 = "res_name" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and all of them
}