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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: Plink

NamesPlink
PuTTY Link
CategoryTools
TypeTunneling
Description(FireEye) A common utility used to tunnel RDP sessions is PuTTY Link, commonly known as Plink. Plink can be used to establish secure shell (SSH) network connections to other systems using arbitrary source and destination ports. Since many IT environments either do not perform protocol inspection or do not block SSH communications outbound from their network, attackers such as FIN8 have used Plink to create encrypted tunnels that allow RDP ports on infected systems to communicate back to the attacker command and control (C2) server.
Information<https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html>
AlienVault OTX<https://otx.alienvault.com/browse/pulses?q=tag:plink>

Last change to this tool card: 19 April 2020

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All groups using tool Plink

ChangedNameCountryObserved

APT groups

 Chafer, APT 39Iran2014-Sep 2020X
 Lazarus Group, Hidden Cobra, Labyrinth ChollimaNorth Korea2007-Spring 2021X
 Parisite, Fox Kitten, Pioneer KittenIran2017-Sep 2020 

3 groups listed (3 APT, 0 other, 0 unknown)

Thailand Computer Emergency Response Team (ThaiCERT)
Electronic Transactions Development Agency

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