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Tropic Trooper, also known as KeyBoy, Key Boy, and Pirate Panda, is a China-linked, state-sponsored cyberespionage actor targeting government, healthcare, transportation, and high-technology organizations. Its principal documented targets include Taiwan, the Philippines, and Hong Kong. The group develops custom espionage tools and uses multistage infection chains to establish and maintain access to targeted networks. Initial-access techniques include spearphishing with malicious Microsoft Office documents and fake installer attachments. Document lures have advertised job vacancies at organizations of potential sociopolitical interest to recipients. Exploitation of Microsoft Equation Editor vulnerabilities CVE-2017-11882 and CVE-2018-0802 enables malware deployment. The group abuses legitimate Windows installation and transfer utilities, uses DLL sideloading to execute malicious loaders through trusted applications, and injects DLL backdoors into legitimate processes. Its FakeRun loader deploys the TClient backdoor, which reads an encrypted external configuration and uses custom SSL libraries for command-and-control communications. Other documented behaviors include Windows command scripting, service-based persistence, and a host-side web service functioning as a web shell. Encrypted configurations, XOR-decrypted payloads, and payloads concealed in image files support defense evasion. Its tooling includes multiple versions and 64-bit variants associated with the TSSL and HSSL development projects.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
47 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
38 malware families attributed to this actor across reporting.
33 additional families tracked in Mallory.
8 CVEs this actor has used in observed campaigns. 8 of them exploited in the wild.
Execute a command through exploits for CVE-2017-11882 or CVE-2018-0802, security flaws in Microsoft Office’s Equation Editor (EQNEDT32.EXE).
Execute a command through exploits for CVE-2017-11882 or CVE-2018-0802, security flaws in Microsoft Office’s Equation Editor (EQNEDT32.EXE).
...has exploited client software vulnerabilities for execution, such as Microsoft Word CVE-2012-0158...
This detection identifies instances where Windows Explorer.exe spawns PowerShell or cmd.exe processes, particularly focusing on executions initiated by LNK files. This behavior is associated with the ZDI-CAN-25373 Windows shortcut zero-day vulnerability, where specially crafted LNK files are used to trigger malicious code execution through cmd.exe or powershell.exe. This technique has been actively exploited by multiple APT groups in targeted attacks through both HTTP and SMB delivery methods.
In our telemetry, we noticed exploitation attempts of several CVEs (CVE-2021-34473, CVE-2021-34523 and CVE-2021-31207 in Microsoft Exchange, CVE-2023-26360 in Adobe ColdFusion). Therefore, we believe with moderate confidence that these web shells were dropped by exploiting an existing unpatched vulnerability.
3 more CVEs tied to this actor tracked in Mallory.
117 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced only as an annotated actor associated with the detection technique.
Listed in the detection annotation metadata.
Referenced solely as an ATT&CK-associated group for Windows built-in account renaming/local-account abuse; no campaign or activity is described.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.