CAPE_Nitrogenloaderbypass

rule CAPE_Nitrogenloaderbypass
{
	meta:
		description = "Nitrogen Loader Exit Bypass"
		author = "enzok"
		id = "397b0b79-d569-5a71-bcac-ce0d64f706e6"
		date = "2024-10-29"
		modified = "2025-07-23"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/analyzer/windows/data/yara/NitrogenLoader.yar#L29-L41"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		logic_hash = "3a034d3ddd18723ea1f91814c8c2a2c47a749dfd1496a5d4777d8ff8bfab3457"
		score = 75
		quality = 70
		tags = ""
		cape_options = "bp2=$exit-2,action2=jmp,count=0"

	strings:
		$string1 = "LoadResource"
		$syscall = {48 83 C4 ?? 4? 8B 4C 24 ?? 4? 8B 54 24 ?? 4? 8B 44 24 ?? 4? 8B 4C 24 ?? 4? 89 CA 4? FF E3}
		$exit = {33 C9 E8 [4] E8 [4] 48 8D 84 24 [4] 48 89 44 24 ?? 4? B? E4 00 00 00 4? 8B 05 [4] B? 03 00 00 00 48 8D}

	condition:
		all of them
}