DragonFly_APT_Sep17_3

rule DragonFly_APT_Sep17_3 {
   meta:
      description = "Detects malware from DrqgonFly APT report"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.symantec.com/connect/blogs/dragonfly-western-energy-sector-targeted-sophisticated-attack-group"
      date = "2017-09-12"
      hash1 = "b051a5997267a5d7fa8316005124f3506574807ab2b25b037086e2e971564291"
      id = "4eafd732-80bc-5f50-bf0d-096df4d35d61"
   strings:
      $s1 = "kernel64.dll" fullword ascii
      $s2 = "ws2_32.dQH" fullword ascii
      $s3 = "HGFEDCBADCBA" fullword ascii
      $s4 = "AWAVAUATWVSU" fullword ascii
   condition:
      ( uint16(0) == 0x5a4d and
        filesize < 40KB and (
           pe.imphash() == "6f03fb864ff388bac8680ac5303584be" or
           all of them
        )
      )
}