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According to recent reports, massive volumes of JavaScript attachments are being spammed out that contain dangerous ransomware. Sonoran recommends taking the following additional precautions to protect yourself:

  • Make sure your mail protection solution is blocking macro-enabled documents and .js scripts
  • Ensure users are blocked from access to downloading Tor by blacklisting the following URL: https://www.torproject.org/download/download-easy.html (the Locky virus in particular relies on downloading and installing the Tor browser and some versions may use Tor to contact the command and control servers)
  • Block any items falling under the category of "proxy avoidance" or "anonymizers."
  • Disable Java in client browsers (for more information, see the following links)
  • And we suggest that access to the following IPs be completely blocked at the firewall:
    • 5.34.183.195
    • 51.254.19.227
    • 185.14.29.188
    • 31.184.197.119
    • 91.219.29.55

You can learn more about the Locky virus here.

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