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
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).
Disclosure is Not Limited.
Limited Disclosure, Restricted Only to the Community.
Limited Disclosure, restricted to the Participant's Organization.
Not for Disclosure, Restricted/ Classified - Only Shared with US DHS.