Nanocore_RAT_Feb18_2

rule Nanocore_RAT_Feb18_2 {
   meta:
      description = "Detects Nanocore RAT"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "Internal Research - T2T"
      date = "2018-02-19"
      hash1 = "377ef8febfd8df1a57a7966043ff0c7b8f3973c2cf666136e6c04080bbf9881a"
      id = "83a8ad4d-0bef-5ba2-aa10-eac5601f2c7b"
   strings:
      $s1 = "ResManagerRunnable" fullword ascii
      $s2 = "TransformRunnable" fullword ascii
      $s3 = "MethodInfoRunnable" fullword ascii
      $s4 = "ResRunnable" fullword ascii
      $s5 = "RunRunnable" fullword ascii
      $s6 = "AsmRunnable" fullword ascii
      $s7 = "ReadRunnable" fullword ascii
      $s8 = "ExitRunnable" fullword ascii
   condition:
      uint16(0) == 0x5a4d and filesize < 1000KB and all of them
}