Hackers Exploiting Follina Bug to Deploy Rozena Backdoor
Jul 09, 2022
A newly observed phishing campaign is leveraging the recently disclosed Follina security vulnerability to distribute a previously undocumented backdoor on Windows systems. "Rozena is a backdoor malware that is capable of injecting a remote shell connection back to the attacker's machine," Fortinet FortiGuard Labs researcher Cara Lin said in a report this week. Tracked as CVE-2022-30190 , the now-patched Microsoft Windows Support Diagnostic Tool (MSDT) remote code execution vulnerability has come under heavy exploitation in recent weeks ever since it came to light in late May 2022. The starting point for the latest attack chain observed by Fortinet is a weaponized Office document that, when opened, connects to a Discord CDN URL to retrieve an HTML file (" index.htm ") that, in turn, invokes the diagnostic utility using a PowerShell command to download next-stage payloads from the same CDN attachment space. This includes the Rozena implant (...
