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.3
tool
HIUPAN S1230
- Type
- malware
- Platform
- Windows
- Created
- 6 August 2025
- Last modified
- 21 October 2025
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]
9
Techniques44th pct
8
TacticsTop 20%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S1230
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 <Drive_Letter>:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\ and hides any other existing files to ensure UsbConfig.exe is the only visible file on the device.45
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.67
HIUPAN has checked periodically for removable drives and installs itself when a drive is detected.89
HIUPAN has lured victims into executing malicious files from USBs including the use of files such as USBconfig.exe.1011
HIUPAN has added Registry Run keys to achieve persistence using HKCU\Software\Microsoft\Windows\CurrentVersion\Run.1213
Standing S1230
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
Techniques944th pct
44th percentile · 56% of 825 ATT&CK software entries have more Enterprise techniques.
Tactics8Top 20%
80th percentile · 80% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat group161% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique11medBottom 18%
18th percentile · 82% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique9med
Detection coverage S1230
413 distinct rules cover the 9 techniques recorded for this tool. The 425 technique-to-rule mappings resolve to 413 distinct rules, because one rule can cover several techniques. 281 Sigma · 132 Splunk.
8 covered by at least one rule1 with no coverage413 distinct rules in total
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