S1230: HIUPAN

S1230: HIUPAN describes [HIUPAN](https://attack.mitre.org/software/S1230) (aka U2DiskWatch) is a is a worm that propagates through removable drives known to be leveraged by [Mustang Panda](https://attack.mitre.org/groups/G0129) and was first observed utilized in 2024. (Citation: 2025_IBM_PUBLOAD_TONESHELL_HIUPAN_CLAIMLOADER_MUSTANG PANDA)(Citation: Trend Micro MUSTANG PANDA PUBLOAD HIUPAN SEPTEMBER 2024)

Executive priority

S1230: HIUPAN is an official MITRE ATT&CK software. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.

Technical view

Security teams should validate S1230: HIUPAN by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Windows), and available local telemetry before making detection or mitigation decisions.

Likely telemetry

Official ATT&CK relationships and object metadata
Network, endpoint, and security-tool telemetry

Detection direction

Validate whether S1230: HIUPAN appears in your detection coverage and tabletop scenarios.
Use the object to align executive risk language with SOC, incident response, and detection engineering work.
Do not treat ATT&CK relationship context as attribution without corroborating evidence.

Mitigation priorities

Map the object to existing controls and identify missing telemetry or response ownership.
Prioritize mitigations that reduce exposure on the listed platforms and tactics.
Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.

Additional notes and limits

Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.

This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Official MITRE ATT&CK definition

HIUPAN

HIUPAN (aka U2DiskWatch) is a is a worm that propagates through removable drives known to be leveraged by Mustang Panda and was first observed utilized in 2024. [1][2]

View the same entry on attack.mitre.org (MITRE-hosted reference; in-page links above use the Glexia ATT&CK library.)

Glexia analysis

How security teams should use this page

Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.

ATT&CK relationship table

Techniques used

This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.

Filter related techniques9 rows

Domain	ID	Name	Relationship / procedure
Enterprise	T1091	Replication Through Removable Media	HIUPAN has periodically checked for removable and hot-plugged drives connected to the infected machine, should one be found HIUPAN will propagate to the removeable drives by copying itself and accompanying malware components to a directory to the new drive in a hidden subdirectory `:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\` and hides any other existing files to ensure UsbConfig.exe is the only visible file on the device.[1][2]
Enterprise	T1112	Modify Registry	HIUPAN has modified registry keys to ensure hidden files and extensions are not visible through the modification of `HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced`.[1][2]
Enterprise	T1057	Process Discovery	HIUPAN has conducted process discovery to identify the PUBLOAD malware under the process WCBrowserWatcher.exe and will launch it from an install directory if it is not found.[2]
Enterprise	T1678	Delay Execution	HIUPAN has used a config file “$.ini” to store a sleep multiplier to execute at a set interval value prior to initiating a watcher function that checks for a specific running process, that checks for removable drives and installs itself and supporting files if one is available.[1][2]
Enterprise	T1547.001	Registry Run Keys / Startup FolderSub-technique	HIUPAN has added Registry Run keys to achieve persistence using `HKCU\Software\Microsoft\Windows\CurrentVersion\Run`.[1][2]
Enterprise	T1204.002	Malicious FileSub-technique	HIUPAN has lured victims into executing malicious files from USBs including the use of files such as USBconfig.exe.[1][2]
Enterprise	T1564.001	Hidden Files and DirectoriesSub-technique	HIUPAN has modified registry keys to ensure hidden files and extensions are not visible through the modification of `HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced`.[1][2]
Enterprise	T1574.001	DLLSub-technique	HIUPAN has abused legitimate executables to side-load malicious DLLs to include the legitimate exe UsbConfig.exe.[1][2]
Enterprise	T1120	Peripheral Device Discovery	HIUPAN has checked periodically for removable drives and installs itself when a drive is detected.[1][2]

Associated objects

Groups, software, and campaigns

G0129: Mustang Panda

Mustang Panda is a China-based cyber espionage threat actor that has been conducting operations since at least 2012. Mustang Panda has been known to use tailored phishing lures and decoy documents to deliver malicious payloads. Mustang Panda has targeted government, diplomatic, and non-governmental organizations, including think tanks, religious institutions, and research entities, across the United States, Europe, and Asia, with notable activity in Russia, Mongolia, Myanmar, Pakistan, and Vietnam. [1][2][3][4][5][6][7][8][9][10][11][12][13]

Relationship explorer

All related ATT&CK context

Change history

Object version and sync metadata

The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.

ATT&CK release: 19.2
Object version: 1.0
Created: Aug 6, 2025, 18:10 UTC (UTC+00:00)
Modified: Oct 21, 2025, 16:52 UTC (UTC+00:00)
Raw hash: 3279ebfc4b9b26d7...

Imported snapshots across ATT&CK releases(2)

Release	Bundle imported	Object version	Modified	Status	Raw hash
19.2	Aug 6, 2026, 02:58 UTC (UTC+00:00)	1.0	Oct 21, 2025, 16:52 UTC (UTC+00:00)	Current bundle	`3279ebfc4b9b…`
19.1	Jul 14, 2026, 09:14 UTC (UTC+00:00)	1.0	Oct 21, 2025, 16:52 UTC (UTC+00:00)	Older bundle	`3279ebfc4b9b…`

Raw source

Mirrored ATT&CK source object

The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.

Open mirrored raw JSON Open MITRE-hosted copy

Source references

External references and citations

MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.

[1]
2025_IBM_PUBLOAD_TONESHELL_HIUPAN_CLAIMLOADER_MUSTANG PANDA
Golo Muhr, Joshua Chung. (2025, May 15). Hive0154 targeting US, Philippines, Pakistan and Taiwan in suspected espionage campaign. Retrieved August 4, 2025.
Open source URL
[2]
Trend Micro MUSTANG PANDA PUBLOAD HIUPAN SEPTEMBER 2024
Lenart Bermejo, Sunny Lu, Ted Lee. (2024, September 9). Earth Preta Evolves its Attacks with New Malware and Strategies. Retrieved August 4, 2025.
Open source URL
[3]
mitre-attackS1230
Open source URL

Source and licensing

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