EquationGroup_EventLogEdit_Implant

rule EquationGroup_EventLogEdit_Implant {
   meta:
      description = "EquationGroup Malware - file EventLogEdit_Implant.dll"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://goo.gl/tcSoiJ"
      date = "2017-01-13"
      hash1 = "0bb750195fbd93d174c2a8e20bcbcae4efefc881f7961fdca8fa6ebd68ac1edf"
      id = "40239dd0-4159-5c10-96b3-4f1e28c92d97"
   strings:
      $s1 = "SYSTEM\\CurrentControlSet\\Services\\EventLog\\%ls" fullword wide
      $s2 = "Ntdll.dll" fullword ascii
      $s3 = "hZwOpenProcess" fullword ascii
   condition:
      ( uint16(0) == 0x5a4d and filesize < 100KB and all of them )
}