FIN11 Uses Cobalt Strike And FlawedGrace To Deploy MBR Killer


  • ransom-4


An attack campaign attributed to the FIN11 threat group was found leveraging the 404 Traffic Distribution System (TDS) service to deliver spear phishing emails.

Cobalt Strike and FlawedGrace were loaded with Truebot which masqueraded as a PDF document.

Scheduled tasks were used for persistence while multiple for loops were utilized to find live endpoints and enumerate open shares.

SkyWatchSM Alert Legend

  • small-bell


  • active-threat0-lt-green

    Active Threat

  • malware-lt-green


  • ransome-lt-green


  • warning-green


  • file-green


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