DITEKSHEN_MALWARE_Win_Espioloader

rule DITEKSHEN_MALWARE_Win_Espioloader : FILE
{
	meta:
		description = "Detects Espio loader and obfuscator"
		author = "ditekSHen"
		id = "fb2be984-abd6-5f71-b448-d41c9c3e35c5"
		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#L10438-L10451"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "8ad77a50db48f12e6f6465652b24fc1daa56375bb27e37e0eead1bea55b89e0c"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.EspioLoader"

	strings:
		$pdb = /\\loader\\x64\\(Release|Debug)\\Espio\.pdb/ ascii
		$s1 = "obfuscatedPayload" fullword wide
		$s2 = "OBFUSCATEDPAYLOAD" fullword wide
		$s3 = "\\??\\C:\\Windows\\System32\\werfault.exe" fullword wide
		$s4 = "C:\\windows\\system32\\ntdll.dll" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( $pdb or 3 of ( $s* ) )
}