APT_DarkHydrus_Jul18_3

rule APT_DarkHydrus_Jul18_3 {
   meta:
      description = "Detects strings found in malware samples in APT report in DarkHydrus"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://researchcenter.paloaltonetworks.com/2018/07/unit42-new-threat-actor-group-darkhydrus-targets-middle-east-government/"
      date = "2018-07-28"
      hash1 = "c8b3d4b6acce6b6655e17255ef7a214651b7fc4e43f9964df24556343393a1a3"
      id = "1f766b49-3173-5f8a-ba52-a9ce9000be79"
   strings:
      $s2 = "Ws2_32.dll" fullword ascii
      $s3 = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0)" fullword ascii
   condition:
      uint16(0) == 0x5a4d and filesize < 100KB and (
         pe.imphash() == "478eacfbe2b201dabe63be53f34148a5" or
         all of them
      )
}