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Threat Group Cards: A Threat Actor Encyclopedia

Tool: Clayslide

Names	Clayslide
Category	Malware
Type	Dropper
Description	This is a so-called delivery document. (Palo Alto) n May 2016, Unit 42 began researching attacks that used spear-phishing emails with attachments, specifically malicious Excel spreadsheets sent to financial organizations within Saudi Arabia. We observed spear-phishing emails sent between May 4 and May 12 of this year that delivered these malicious Excel spreadsheets, which we are tracking as ‘Clayslide’. ClaySlide documents contain malicious macros that display decoy content within the spreadsheet and installs a variant of a Helminth backdoor.
Information	<https://unit42.paloaltonetworks.com/the-oilrig-campaign-attacks-on-saudi-arabian-organizations-deliver-helminth-backdoor/>

Last change to this tool card: 20 April 2020

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All groups using tool Clayslide

Changed	Name	Country	Observed
APT groups
	OilRig, APT 34, Helix Kitten, Chrysene		2014-Sep 2024

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

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Electronic Transactions Development Agency

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