113. Adversaries Abuse Trend Micro and Bitdefender to Load Malicious DLLs

Hello everyone! The threat actors keep abusing legitimate binaries for DLL Side Loading. This time the adversaries abused Trend Micro and Bitdefender.

According to Symantec report, the Billbug espionage group used a Trend Micro binary named tmdbglog.exe to sideload a malicious DLL named tmdglog.dll, and a Bitdefender binary named bds.exe to sideload a malicious DLL named log.dll.

We can hunt for suspicious executions of these binaries focusing on suspicious file names and locations:

event_type: "processcreatewin"

AND

proc_file_originalfilename: ("PtWatchDog.exe" OR "BDSubWiz.exe")

See you tomorrow!

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