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ActiveMITRE ATT&CK

RedPenguin

The RedPenguin project was launched by Juniper in July 2024 to investigate reported malware infections of Juniper MX Series routers. RedPenguin activity was separately attributed to UNC3886 and included the deployment of multiple custom versions of the publicly-available TINYSHELL backdoor on Juniper routers.

First observedJul 1, 2024
Last observedMar 1, 2025
Attributed actors1
Source-backed events3
Attribution

Who has been linked to this activity

Each relationship retains its own confidence and source.

Source ReportedActive actor

UNC3886

UNC3886 is a China-nexus cyberespionage group that has been active since at least 2022, targeting defense, technology, and telecommunication organizations located in the United States and the Asia-Pacific-Japan (APJ) ...

mitre-attckReview source
Activity

Campaign timeline

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Cataloged
Attribution

UNC3886 attributed to this campaign

Attribution confidence: Source Reported.

Last observed
Campaign

RedPenguin last observed

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MITRE ATT&CKSource
First observed
Campaign

RedPenguin first observed

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MITRE ATT&CKSource
About the context below

CVEs, techniques, malware, and indicators in the sections below are associated with an attributed actor. They are useful investigative context, but the campaign source does not necessarily link every item directly to this campaign.

Investigation context

What the attributed actors are known to use

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Related vulnerabilities 0

No linked CVEs are available.

Malware and tools 8

  • CASTLETAPMalware | UNC3886
  • MEDUSAMalware | UNC3886
  • MOPSLEDMalware | UNC3886
  • REPTILEMalware | UNC3886
  • RIFLESPINEMalware | UNC3886
  • THINCRUSTMalware | UNC3886
  • VIRTUALPIEMalware | UNC3886
  • VIRTUALPITAMalware | UNC3886

Indicators 0

No source-linked indicators are available.

Sources

Evidence behind this page

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