Threat Group Cards: A Threat Actor Encyclopedia
Archived: 2026-04-05 22:22:35 UTC
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 Tool: HighNoon
Names HighNoon
Category Malware
Type Backdoor, Rootkit
Description
(FireEye) HIGHNOON is a backdoor that consists of multiple components, including a
loader, dynamic-link library (DLL), and a rootkit. When loaded, the DLL may deploy one
of two embedded drivers to conceal network traffic and communicate with its command
and control server to download and launch memory-resident DLL plugins.
HighNoon seems to be a variant of Winnti.
Information
<https://www.fireeye.com/blog/threat-research/2019/08/game-over-detecting-and-stopping-an-apt41-operation.html>
Malpedia
<https://malpedia.caad.fkie.fraunhofer.de/details/win.highnoon>
<https://malpedia.caad.fkie.fraunhofer.de/details/win.highnoon_bin>
AlienVault OTX <https://otx.alienvault.com/browse/pulses?q=tag:HIGHNOON>
Last change to this tool card: 24 April 2021
Download this tool card in JSON format
All groups using tool HighNoon
Changed Name Country Observed
APT groups
  APT 41 2012-Jul 2025
  Ke3chang, Vixen Panda, APT 15, GREF, Playful Dragon 2010-Oct 2024  
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=24a67ed1-9fa5-4d77-a1dd-9cf8a6011beb
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2 groups listed (2 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=24a67ed1-9fa5-4d77-a1dd-9cf8a6011beb
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=24a67ed1-9fa5-4d77-a1dd-9cf8a6011beb
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