5 Email Security Tips to Combat Macro-Enabled Ransomware

August 3rd, 2016 by Mark Daly in Industry News No Comments »

Email clients and web browsers top the list of applications used to trigger the ransomware payload. It’s critical that organisations get a handle on their email traffic if they are going to protect against phishing and spearphishing attacks. The big problem, however, is that the ransomware threat extends well beyond the email traffic itself to encompass any file with macros – that is, embedded scripts that contain programming code.

Recent research from Mimecast also points to resurgence in this macro attack technique:

  • 50% of firms saw an increase in email attacks that use macros in attachments
  • 44% saw increase in attacks with social engineering asking users to enable macros

“Cybercriminals are increasingly looking to macro variants because they can evade many common email security defences, especially when combined with social engineering,” says Orlando Scott-Cowley, Cybersecurity Strategist at Mimecast.

“Cerber is a classic <macro-enabled> ransomware attack using a toolkit rented from the dark web, often phishing via email to penetrate networks and then scramble corporate data well before any security professional has a chance to intervene,” says Eric Ogren, Senior Security Analyst at 451 Research. “It’s nasty and variants are sure to be around for a while.”

“One way we effectively defend against advanced tactics like macro-based malware attacks, is by implementing email security technology to analyze malicious links and attachments in real-time,” recommends Reminger’s Patriarca.

Adds Ryan Patriarca, ‎Director of Information Technology at ‎Reminger Co., L.P.A., “The recent surge in ransomware attacks should have any organisation concerned. As a law firm, these threats are magnified since we’re not only responsible for protecting our own confidential information, but clients’ sensitive data, as well.”


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