OpCloudHopper_Malware_4

rule OpCloudHopper_Malware_4 {
   meta:
      description = "Detects malware from Operation Cloud Hopper"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.pwc.co.uk/issues/cyber-security-data-privacy/insights/operation-cloud-hopper.html"
      date = "2017-04-03"
      modified = "2023-01-06"
      hash1 = "ae6b45a92384f6e43672e617c53a44225e2944d66c1ffb074694526386074145"
      id = "ebc810e6-f549-5401-9ee9-331888eda127"
   strings:
      $s6 = "operator \"\" " fullword ascii
      $s9 = "InvokeMainViaCRT" fullword ascii
      $s10 = ".?AVAES@@" ascii
   condition:
      ( uint16(0) == 0x5a4d and filesize < 800KB and all of them )
}