Unknown Logger - Threat Group Cards: A Threat Actor
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Archived: 2026-04-05 17:16:30 UTC
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 Tool: Unknown Logger
Names Unknown Logger
Category Tools
Type Backdoor
Description
Unknown Logger is a publicly released, free backdoor. Version 1.5 of the backdoor has
been used by the actors responsible for the MONSOON campaign.
Information
MITRE ATT&CK Last change to this tool card: 30 December 2022
Download this tool card in JSON format
All groups using tool Unknown Logger
Changed Name Country Observed
APT groups
 Operation HangOver, Monsoon, Viceroy Tiger 2010-Jan 2020
 Patchwork, Dropping Elephant 2013-Jun 2025
2 groups listed (2 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=1a2b107c-dc88-4ecf-bcf3-23435c6a114a
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=1a2b107c-dc88-4ecf-bcf3-23435c6a114a
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