2021-09-03 (FRIDAY) - GULOADER FOR POSSIBLE REMCOS RAT

NOTICE:

• The zip archives on this page have been updated, and they now use the new password scheme.  For the new password, see the "about" page of this website.

ASSOCIATED FILES:

• 2021-09-03-IOCs-for-GuLoader-for-possible-Remcos-RAT.txt.zip   1.2 kB (1,220 bytes)
• 2021-09-03-GuLoader-malspam-for-Remcos-RAT.eml.zip   608 kB (608,010 bytes)
• 2021-09-03-GuLoader-for-possible-Remcos-RAT.pcap.zip   635 kB (635,380 bytes)
• 2021-09-03-malware-and-artifacts-from-GuLoader-possible-Remcos-RAT-infection.zip   1.1 MB (1,123,120 bytes)

NOTES:

• I've written about GuLoader before, which is a method used for some RAT-based malware infections:

• GuLoader installing Network RAT (published April 2020)
• GuLoader for Remcos RAT (published February 2021)

 

Shown above:  Chain of events for this infection.

 

Shown above:  Screenshot of the email.

 

Shown above:  Screenshot of the attachment opened in Microsoft Excel.

 

Shown above:  Traffic from the infection filtered in Wireshark

 

Shown above:  GuLoader saved to the infected Windows host.

 

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