HKTL_mimikatz_memssp_hookfn

rule HKTL_mimikatz_memssp_hookfn {
   meta:
      description = "Detects Default Mimikatz memssp module in-memory"
      author = "SBousseaden"
      date = "2020-08-26"
      reference = "https://github.com/sbousseaden/YaraHunts/blob/master/mimikatz_memssp_hookfn.yara"
      score = 70
      id = "89940110-8a5e-5a28-bf64-3b568f8ef1f8"
   strings: 
      $xc1 = { 48 81 EC A8 00 00 00 C7 84 24 88 00 00 00 ?? ?? 
               ?? ?? C7 84 24 8C 00 00 00 ?? ?? ?? ?? C7 84 24 
               90 00 00 00 ?? ?? ?? 00 C7 84 24 80 00 00 00 61 
               00 00 00 C7 44 24 40 5B 00 25 00 C7 44 24 44 30 
               00 38 00 C7 44 24 48 78 00 3A 00 C7 44 24 4C 25 
               00 30 00 C7 44 24 50 38 00 78 00 C7 44 24 54 5D 
               00 20 00 C7 44 24 58 25 00 77 00 C7 44 24 5C 5A 
               00 5C 00 C7 44 24 60 25 00 77 00 C7 44 24 64 5A 
               00 09 00 C7 44 24 68 25 00 77 00 C7 44 24 6C 5A 
               00 0A 00 C7 44 24 70 00 00 00 00 48 8D 94 24 80 
               00 00 00 48 8D 8C 24 88 00 00 00 48 B8 A0 7D ?? 
               ?? ?? ?? 00 00 FF D0 } // memssp creds logging function
      // $xc2 = {6D 69 6D 69 C7 84 24 8C 00 00 00 6C 73 61 2E C7 84 24 90 00 00 00 6C 6F 67} -  mimilsa.log
   condition: 
      $xc1 // you can set condition to $xc1 and not $xc2 to detect non lazy memssp users 
}