GridinSoft Threat Intelligence
AmUStor.sys file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2022-11-02 23:36:41 (3 years ago); latest analysis 2022-11-08 23:52:41 (3 years ago).
Company metadata: Alcor Micro, Corp.. Product metadata: Alocr Micro USB Mass Storage Driver.
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Use the hash and metadata below to verify the exact file identity.
- Review publisher, signature, paths, and PE details for inconsistencies.
- Run a local scan if the file appears unexpectedly or starts with Windows.
File context
AmUStor.sys is a Windows file recorded in the ThreatInfo database. It is associated with Alocr Micro USB Mass Storage Driver. The reported company name is Alcor Micro, Corp.. The current detection status is Undefined, based on the latest analysis from 2022-11-08 23:52:41 (3 years ago).
ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.
File Details
| Product Name: | Alocr Micro USB Mass Storage Driver |
| Company Name: | Alcor Micro, Corp. |
| MD5: | 391887990cdaa83de5c56c3fde966da1 |
| Size: | 39 KB |
| First Published: | 2022-11-02 23:36:41 (3 years ago) |
| Latest Published: | 2022-11-08 23:52:41 (3 years ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2022-11-08 23:52:41 (3 years ago) |
Common Places:
| %programfiles% |
ThreatInfo has observed AmUStor.sys in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen AmUStor.sys across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Italy with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for AmUStor.sys is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
AmUStor.sys is identified as pe for 64-bit systems. The subsystem is Native. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
7200c5759d5328aa84722c0038c95fb7
9dc5054cf5283cfe02b42ef8897d32f4
1910f751e469b95b55f4cb1a1e96bdc3
88d5cb72b54f640f4035611a2092cd92
3bb0bd64341ec505e33bc78a0a74d550
c42b36de21169779f1b64d67a1a1e415
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
This file is still under review
ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.