Empire_Get_GPPPassword

rule Empire_Get_GPPPassword {
   meta:
      description = "Detects Empire component - file Get-GPPPassword.ps1"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://github.com/adaptivethreat/Empire"
      date = "2016-11-05"
      hash1 = "55a4519c4f243148a971e4860225532a7ce730b3045bde3928303983ebcc38b0"
      id = "7791b009-19d3-5d08-8ef7-4723d28830ed"
   strings:
      $s1 = "$Base64Decoded = [Convert]::FromBase64String($Cpassword)" fullword ascii
      $s2 = "$XMlFiles += Get-ChildItem -Path \"\\\\$DomainController\\SYSVOL\" -Recurse" ascii
      $s3 = "function Get-DecryptedCpassword {" fullword ascii
   condition:
      ( uint16(0) == 0x7566 and filesize < 30KB and 1 of them ) or all of them
}