Listen "File Explorer's Hidden Danger"
Episode Synopsis
"Send me a quick text"Episode Description – Technical Write-up for DefendersFileFix is a social engineering technique that builds on a known phishing method used in past ransomware and credential theft campaigns. It replaces more technical-looking prompts with a trusted and familiar Windows interface, making the request feel routine to the victim. By leveraging normal user actions inside a trusted application, the attacker can initiate malicious activity without relying on exploits or suspicious file downloads.Key Defensive Actions:Restrict or limit script execution policies, especially for PowerShell.Monitor for unusual process activity originating from trusted applications.Provide awareness training that warns against unusual instructions involving system navigation tools.Apply browser and email security controls to block interactions with untrusted domains.Relevant Indicators:Unexpected process chains involving trusted applications and scripting engines.Unusual clipboard activity linked to browser interactions.Alerts for suspicious commands that originate outside of normal administrative workflows.Detection and Monitoring Tips:Configure EDR/SIEM to flag scripting processes spawned by user-facing applications.Enable detailed command-line auditing and review logs regularly.Restrict high-risk browser functions when accessed from corporate devices.Known Infrastructure & Techniques:Inspired by research into variations of the ClickFix phishing method.Previously seen in campaigns attributed to ransomware operators and state-sponsored groups.Support the showThanks for spending a few minutes on the CyberBrief Project. If you want to dive deeper or catch up on past episodes, head over to cyberbriefproject.buzzsprout.com. You can also find the podcast on YouTube at youtube.com/@CyberBriefProject — I’d love to see you there. And if you find these episodes valuable and want to support the project, you can do that here: buzzsprout.com/support Your support means a lot. See you in the next one, and thank you for listening.
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