DragonFly_APT_Sep17_1

rule DragonFly_APT_Sep17_1 {
   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 = "fc54d8afd2ce5cb6cc53c46783bf91d0dd19de604308d536827320826bc36ed9"
      id = "d219a54e-cb76-5c56-b64c-5019e811eeb1"
   strings:
      $s1 = "\\Update\\Temp\\ufiles.txt" wide
      $s2 = "%02d.%02d.%04d %02d:%02d" fullword wide
      $s3 = "*pass*.*" fullword wide
   condition:
      ( uint16(0) == 0x5a4d and filesize < 100KB and all of them )
}