Threat Group Cards: A Threat Actor Encyclopedia
Archived: 2026-04-05 23:22:49 UTC
Home > List all groups > List all tools > List all groups using tool HAPPYWORK
 Tool: HAPPYWORK
Names HAPPYWORK
Category Malware
Type Downloader, Reconnaissance
Description
(FireEye) HAPPYWORK is a malicious downloader that can download and execute a
second-stage payload, collect system information, and beacon it to the command and
control domains. The collected system information includes: computer name, user name,
system manufacturer via registry, IsDebuggerPresent state, and execution path.
In November 2016, HAPPYWORK targeted government and financial targets in South
Korea.
Information MITRE ATT&CK Last change to this tool card: 23 April 2020
Download this tool card in JSON format
All groups using tool HAPPYWORK
Changed Name Country Observed
APT groups
 Reaper, APT 37, Ricochet Chollima, ScarCruft 2012-Mar 2025
1 group listed (1 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=b7302a45-e3d2-4711-a21f-7de0935de2ba
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=b7302a45-e3d2-4711-a21f-7de0935de2ba
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