Malware-Traffic-Analysis.net - 2021-09-17 (Friday) -
Squirrelwaffle Loader with Cobalt Strike
Archived: 2026-04-05 14:20:23 UTC
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:
2021-09-17-IOCs-for-Squirrelwaffle-loader-with-Cobalt-Strike.txt.zip   3.6 kB   (3,563 bytes)
2021-09-17-Word-docs-for-Squirrelwaffle-Loader-10-examples.zip   1.3 MB   (1,348,874 bytes)
2021-09-17-Squirrelwaffle-loader-with-Cobalt-Strike.pcap.zip   7.0 MB   (7,008,533 bytes)
2021-09-17-Squirrelwaffle-and-Cobalt-Strike-malware-and-artifacts.zip   559 kB   (559,022 bytes)
NOTES:
See 2021-09-17-IOCs-for-Squirrelwaffle-loader-with-Cobalt-Strike.txt.zip for more info on Squirrelwaffle
Loader and this specific infection.
IMAGES
Shown above:  Link for malicious zip archive from an email pushing Squirrelwaffle loader.
https://www.malware-traffic-analysis.net/2021/09/17/index.html
Page 1 of 4

Shown above:  Word doc extracted from downloaded zip archive.
Shown above:  Squirrelwaffle artifacts from an infected Windows host.
https://www.malware-traffic-analysis.net/2021/09/17/index.html
Page 2 of 4

Shown above:  Traffic from a Squirrelwaffle loader infection filtered in Wireshark.
Shown above:  Windows EXE for Cobalt Strike seen as follow-up malware.
Shown above:  Traffic filtered in Wireshark showing when Cobalt Strike activity started.
https://www.malware-traffic-analysis.net/2021/09/17/index.html
Page 3 of 4

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Source: https://www.malware-traffic-analysis.net/2021/09/17/index.html
https://www.malware-traffic-analysis.net/2021/09/17/index.html
Page 4 of 4