GridinSoft Threat Intelligence
chrmstp.exe file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2026-03-14 23:00:59 (2 months ago); latest analysis 2026-05-13 17:01:01 (2 weeks ago).
Company metadata: Work Product Inc.. Product metadata: OnBsr Installer.
Signed by Work Product Inc.. The signature is reported as valid, but signed files can still be bundled or abused.
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
chrmstp.exe is a Windows file recorded in the ThreatInfo database. It is associated with OnBsr Installer. The reported company name is Work Product Inc.. The current detection status is Undefined, based on the latest analysis from 2026-05-13 17:01:01 (2 weeks 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: | OnBsr Installer |
| Company Name: | Work Product Inc. |
| MD5: | 5aa120ee57bf8dbe30e78ced9d1c7e0f |
| Size: | 6 MB |
| First Published: | 2026-03-14 23:00:59 (2 months ago) |
| Latest Published: | 2026-05-13 17:01:01 (2 weeks ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2026-05-13 17:01:01 (2 weeks ago) |
Overview
| Signed By: | Work Product Inc. |
| Status: | Valid |
The signature on chrmstp.exe is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.
Common Places:
| %programfiles%\ob\application\137.0.7151.69 |
| %localappdata%\ob\application\137.0.7151.69 |
ThreatInfo has observed chrmstp.exe 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 chrmstp.exe across 4 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Brazil with 37.5% 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 chrmstp.exe 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
chrmstp.exe is identified as pe for 32-bit systems. The subsystem is Windows GUI. 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.
17f7f8d4cc9347e86d491a76ae886cc0
f3f2243514bdca72ef27993d55daabdf
a4cc9fc3e0440fd9ad097eeb63e39e1f
bf619eac0cdf3f68d496ea9344137e8b
b9127bdf9c33b3123c8c2dbd4946c596
116cb00c9b9ba7d2d65f7e0cdb9e2e07
842689af09e7bf563672a4b43f1a2286
3373073eff11458d5d8305d4691bf280
ee5c56820a6f987a887b70f055c9a3de
e566d52ac6e953c1af6182332e7cc299
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.