IMPLANT_2_v3

rule IMPLANT_2_v3 {
   meta:
      description = "CORESHELL/SOURFACE Implant by APT28"
      author = "US CERT"
      reference = "https://www.us-cert.gov/ncas/current-activity/2017/02/10/Enhanced-Analysis-GRIZZLY-STEPPE"
      date = "2017-02-10"
      score = 85
      id = "747e4f76-b9c4-5988-90ae-b450548b1b82"
   strings:
      $STR1 = {C1 EB 07 8D ?? 01 32 1C ?? 33 D2 }
      $STR2 = {2B ?? 83 ?? 06 0F 83 ?? 00 00 00 EB 02 33 }
      $STR3 = {89 ?? ?? 89 ?? ?? 89 55 ?? 89 45 ?? 3B ?? 0F 83 ?? 00 00 00 8D
         ?? ?? 8D ?? ?? FE }
   condition:
      (uint16(0) == 0x5A4D) and any of them
}