DragonFly_APT_Sep17_4

rule DragonFly_APT_Sep17_4 {
   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 = "2f159b71183a69928ba8f26b76772ec504aefeac71021b012bd006162e133731"
      id = "dbc0eebf-fc81-5a0b-b2e0-129d0b40b6f7"
   strings:
      $s1 = "screen.exe" fullword wide
      $s2 = "PlatformInvokeUSER32" fullword ascii
      $s3 = "GetDesktopImageF" fullword ascii
      $s4 = "PlatformInvokeGDI32" fullword ascii
      $s5 = "GetDesktopImage" fullword ascii
      $s6 = "Too many arguments, going to store in current dir" fullword wide
   condition:
      ( uint16(0) == 0x5a4d and filesize < 60KB and all of them )
}