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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