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Threat Group Cards: A Threat Actor Encyclopedia

Tool: ArtraDownloader

Names	ArtraDownloader Artra Downloader
Category	Malware
Type	Downloader
Description	(Palo Alto) Overall, the ArtraDownloader malware family is not sophisticated, leveraging simple registry keys for persistence and HTTP requests to download and execute a remote file. Important strings within these samples are obfuscated by adding or subtracting from each byte within a string. This same obfuscation routine is used when sending data via HTTP. This downloader has frequently been observed downloading the Remote Access Trojan (RAT) BitterRAT which is associated with BITTER threat operations.
Information	<https://unit42.paloaltonetworks.com/multiple-artradownloader-variants-used-by-bitter-to-target-pakistan/>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.artra>
AlienVault OTX	<https://otx.alienvault.com/browse/pulses?q=tag:ArtraDownloader>

Last change to this tool card: 28 December 2022

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All groups using tool ArtraDownloader

Changed	Name	Country	Observed
APT groups
	Bitter	[South Asia]	2013-Apr 2023
	Patchwork, Dropping Elephant		2013-Jul 2024

2 groups listed (2 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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