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Therefore, to help improve security in Office, Microsoft is changing the default behavior of Office applications to block macros in files from the internet. As noted by Microsoft, “VBA macros are a common way for malicious actors to gain access to deploy malware and ransomware. In addition, Microsoft has made changes to Office to slow the deployment of ransomware. That’s one way to test the impact on a network. And use advanced protection against ransomware.ĪSR rules, which usually don’t cause any side effects to normal PC processing, can be set to “audit” systems rather than impose restrictions.Block process creations originating from PsExec and WMI commands.Block credential stealing from the Windows local security authority subsystem (lsass.exe).Block executable files from running unless they meet a prevalence, age, or trusted list criterion.ASR rules can be enabled on Windows 10 and 11 Professional versions to boost Windows’ ability to block attackers.Įven if you’re not a Microsoft 365 Defender customer, you can deploy ASR rules the specific rules that target ransomware processes: Attack Surface Reduction (ASR) rules remain one set of tools many firms do not take advantage of. Payne pointed to the additional information in a 2022 Ransomware as a Service blog post. Ransomware can also enter systems due to security misconfigurations or overlooked vulnerabilities. If users are not slightly paranoid - meaning they stop and think before clicking on links and phishing schemes - networks remain vulnerable. (Ransomware actors know the easiest way into a network is to trick the “unpatched human.”) While companies may be doing a better job of patching operating systems and Office suites, they still rely too much on end users to be smart. That access is then sold on the black market. A search result could, for example, point admins to a malicious tool that tricks them into installing a potential back door. So, they’re now coordinating efforts to avoid headlines likely to prompt vendors and providers to tighten security, end users to patch, and corporations to deploy better security solutions.īeyond that, attackers are also targeting search results for the information tools IT teams need to do their job. When attackers go after big-name targets, they often create bad press for the ransomware industry.