FIN11 Uses Cobalt Strike And FlawedGrace To Deploy MBR Killer

skywatcg-alert-2

  • ransom-4

    TLP-GREEN


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

    Warning

  • active-threat0-lt-green

    Active Threat

  • malware-lt-green

    Malware

  • ransome-lt-green

    Ransomware

  • warning-green

    Phishing

  • file-green

    Network/IOT

Glesec Information Sharing Protocol

GLESEC CYBER SECURITY INCIDENT REPORTS are in compliance with the U.S. Department of Homeland Security (DHS) Traffic-Light Protocol (TLP).

  • TLP-White

    Disclosure is Not Limited.

  • TLP-Green

    Limited Disclosure, Restricted Only to the Community.

  • TLP-Amber

    Limited Disclosure, restricted to the Participant's Organization.

  • TLP-Red

    Not for Disclosure, Restricted/ Classified - Only Shared with US DHS.

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