Threat Group Cards: A Threat Actor Encyclopedia
Archived: 2026-04-06 03:26:01 UTC
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 Tool: Proxysvc
Names Proxysvc
Category Malware
Type Backdoor, Tunneling
Description
Proxysvc is a malicious DLL used by Lazarus Group in a campaign known as Operation
GhostSecret. It has appeared to be operating undetected since 2017 and was mostly
observed in higher education organizations. The goal of Proxysvc is to deliver additional
payloads to the target and to maintain control for the attacker. It is in the form of a DLL
that can also be executed as a standalone process.
Information
MITRE ATT&CK AlienVault OTX Last change to this tool card: 22 April 2020
Download this tool card in JSON format
All groups using tool Proxysvc
Changed Name Country Observed
APT groups
 Lazarus Group, Hidden Cobra, Labyrinth Chollima 2007-May 2025
1 group listed (1 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=cd3b29aa-2cf0-4710-bcbc-8794c624e2a7
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=cd3b29aa-2cf0-4710-bcbc-8794c624e2a7
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