EquationGroup_calserver

rule EquationGroup_calserver {
   meta:
      description = "Equation Group hack tool leaked by ShadowBrokers- file calserver"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://medium.com/@shadowbrokerss/dont-forget-your-base-867d304a94b1"
      date = "2017-04-08"
      hash1 = "048625e9a0ca46d7fe221e262c8dd05e7a5339990ffae2fb65a9b0d705ad6099"
      id = "abe935ee-8579-54f0-b6d3-172d6e2c0482"
   strings:
      $x1 = "usage: %s <host> <port> e <contents of a local file to be executed on target>" fullword ascii
      $x2 = "Writing your %s to target." fullword ascii
      $x3 = "(e)xploit, (r)ead, (m)ove and then write, (w)rite" fullword ascii
   condition:
      ( uint16(0) == 0x457f and filesize < 30KB and 1 of them )
}