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Threat Group Cards: A Threat Actor Encyclopedia

Tool: Hotwax

Names	Hotwax HOTWAX
Category	Malware
Type	Loader
Description	HOTWAX is a module that upon starting imports all necessary system API functions, and searches for a .CHM file. HOTWAX decrypts a payload using the Spritz algorithm with a hard-coded key and then searches the target process and attempts to inject the decrypted payload module from the CHM file into the address space of the target process.
Information	<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2018/03/07180244/Lazarus_Under_The_Hood_PDF_final.pdf> <https://content.fireeye.com/apt/rpt-apt38> <https://www.welivesecurity.com/2017/02/16/demystifying-targeted-malware-used-polish-banks/> <https://www.virusbulletin.com/uploads/pdf/magazine/2018/VB2018-Kalnai-Poslusny.pdf>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.hotwax>

Last change to this tool card: 29 December 2022

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All groups using tool Hotwax

Changed	Name	Country	Observed
APT groups
	Lazarus Group, Hidden Cobra, Labyrinth Chollima		2007-Feb 2024

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

Digital Service Security Center
Electronic Transactions Development Agency

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