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Threat Group Cards: A Threat Actor Encyclopedia

Names	THINSPOOL
Category	Malware
Type	Dropper
Description	(Mandiant) THINSPOOL is a dropper written in shell script that writes the web shell LIGHTWIRE to a legitimate CS file. THINSPOOL will re-add the malicious web shell code to legitimate files after an update, allowing UNC5221 to persist on the compromised devices. THINSPOOL attempts to evade Ivanti’s Integrity Checker but Mandiant observed this attempt failed.
Information	<https://www.mandiant.com/resources/blog/suspected-apt-targets-ivanti-zero-day>

Last change to this tool card: 17 January 2024

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

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