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Threat Group Cards: A Threat Actor Encyclopedia

Tool: DEPLOYLOG

Names	DEPLOYLOG
Category	Malware
Type	Loader
Description	(Cybereason) DEPLOYLOG (dbghelp.dll) is a 64 bit DLL, with two purposes: • The first one is responsible for extracting and executing the attackers’ rootkit, dubbed WINNKIT, from the CLFS log file. • After a successful deployment of the WINNKIT rootkit, DEPLOYLOG switches to its second task, which is communicating both with the remote C2 and the kernel-level rootkit. It’s noteworthy to mention that to evade detection, the attackers deployed DEPLOYLOG as dbghelp.dll, a generic, widely used name leveraged to masquerade as a legitimate file at the same location as PRIVATELOG (C:\Windows\System32\WindowsPowerShell\v1.0).
Information	<https://www.cybereason.com/blog/operation-cuckoobees-a-winnti-malware-arsenal-deep-dive>

Last change to this tool card: 19 July 2022

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All groups using tool DEPLOYLOG

Changed	Name	Country	Observed
APT groups
	APT 41		2012-Aug 2024

1 group listed (1 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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