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Threat Group Cards: A Threat Actor Encyclopedia

Tool: HyperStack

Names	HyperStack GoldenSky SilentMoon Turla SilentMoon BigBoss Cacao
Category	Malware
Type	Backdoor
Description	(Accenture) HyperStack, first observed in 2018, is one of several RPC backdoors Turla uses. A sample identified in September 2020 has updated functionality which appears to be inspired the RPC backdoors previously publicly disclosed by ESET and Symantec Researchers as well as with the Carbon backdoor. Based on these similarities, we assess with high confidence that HyperStack is a custom Turla backdoor.
Information	<https://www.accenture.com/us-en/blogs/cyber-defense/turla-belugasturgeon-compromises-government-entity> <https://www.pwc.co.uk/cyber-security/pdf/pwc-cyber-threats-2020-a-year-in-retrospect.pdf>
MITRE ATT&CK	<https://attack.mitre.org/software/S0537/>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.turla_silentmoon>

Last change to this tool card: 30 December 2022

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All groups using tool HyperStack

Changed	Name	Country	Observed
APT groups
	Turla, Waterbug, Venomous Bear		1996-Dec 2023

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

Digital Service Security Center
Electronic Transactions Development Agency

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