EquationGroup_evolvingstrategy_1_0_1

rule EquationGroup_evolvingstrategy_1_0_1 {
   meta:
      description = "Equation Group hack tool leaked by ShadowBrokers- file evolvingstrategy.1.0.1.1"
      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 = "fe70e16715992cc86bbef3e71240f55c7d73815b4247d7e866c845b970233c1b"
      id = "465f709b-1791-5b36-836b-7a0c08bb9b88"
   strings:
      $s1 = "chown root sh; chmod 4777 sh;" fullword ascii
      $s2 = "cp /bin/sh .;chown root sh;" fullword ascii

      $l1 = "echo clean up when elevated:" fullword ascii

      $x1 = "EXE=$DIR/sbin/ey_vrupdate" fullword ascii
   condition:
      ( filesize < 4KB and 1 of them )
}