DITEKSHEN_MALWARE_Win_Caspertroy

rule DITEKSHEN_MALWARE_Win_Caspertroy : FILE
{
	meta:
		description = "Detects CasperTroy payload"
		author = "ditekSHen"
		id = "822c3231-60ba-5e60-8df8-06dea80b318a"
		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#L2919-L2931"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "ce070b1e6279ef9fa47f84da7c5166cd93b3e7a0f95541ae14c048b2af9bc431"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "DllTroy.dll" fullword ascii
		$s2 = "Content-Disposition: form-data; name=\"image\"; filename=\"title.gif\"" fullword ascii
		$s3 = "Content-Disposition: form-data; name=\"COOKIE_ID\"" fullword ascii
		$s4 = "Content-Disposition: form-data; name=\"PHP_SESS_ID\"" fullword ascii
		$s5 = "Content-Disposition: form-data; name=\"SESS_ID\"" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 4 of them
}