GridinSoft Threat Intelligence

chrmstp.exe file report

Under review File reputation report
MD5 a4fb8a6698eaa343a6777141a6cc375f
Latest seen 2026-05-13 21:00:42 (2 weeks ago)
First seen 2025-12-10 23:00:59 (5 months ago)
Size 5 MB
Publisher WORK PRODUCT, INC.
Product OneBrowser Installer
Signed by WORK PRODUCT, INC.

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2025-12-10 23:00:59 (5 months ago); latest analysis 2026-05-13 21:00:42 (2 weeks ago).

Publisher context

Company metadata: WORK PRODUCT, INC.. Product metadata: OneBrowser Installer.

Digital signature

Signed by WORK PRODUCT, INC.. The signature is reported as valid, but signed files can still be bundled or abused.

Observed locations

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

  1. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. 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 OneBrowser Installer. The reported company name is WORK PRODUCT, INC.. The current detection status is Undefined, based on the latest analysis from 2026-05-13 21:00:42 (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: OneBrowser Installer
Company Name: WORK PRODUCT, INC.
MD5: a4fb8a6698eaa343a6777141a6cc375f
Size: 5 MB
First Published: 2025-12-10 23:00:59 (5 months ago)
Latest Published: 2026-05-13 21:00:42 (2 weeks ago)
Status: Undefined (on last analysis)
Analysis Date: 2026-05-13 21:00:42 (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%\onebrowser\application\137.0.7151.69
%localappdata%\onebrowser\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 18 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Brazil
Share 23.7%
Low High activity

The strongest geographic signal for this file is Brazil with 23.7% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 10 100.0%

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.

Format pe
Architecture 32-bit
Subsystem Windows GUI
Entry point 0x002d6930
Image base 0x00400000

PE Sections:

Sections 10
Raw data 6138368

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 3168256 bytes · 51.6% of section data
MD5 23a919b630b214e522ea5ce360e9ae03
.rdata 2513408 bytes · 40.9% of section data
MD5 ac13d0eb30b734ef7be922fae4e673dd
.data 17408 bytes · 0.3% of section data
MD5 f9927b963678c080239a2e3bc0ea1830
.fptable 512 bytes · 0.0% of section data
Uncommon name
MD5 bf619eac0cdf3f68d496ea9344137e8b
.rodata 512 bytes · 0.0% of section data
MD5 0ad98421280ce5789a80b506c4cbfc33
.tls 512 bytes · 0.0% of section data
MD5 409b5bb371abfcedd266649c744f6c85
CPADinfo 512 bytes · 0.0% of section data
Uncommon name
MD5 842689af09e7bf563672a4b43f1a2286
malloc_h 512 bytes · 0.0% of section data
Uncommon name
MD5 d440b114ff5d5a6be47440e007b3c686
.rsrc 350720 bytes · 5.7% of section data
MD5 afc8de5199c6f13cb08e8a306aebd1f1
.reloc 86016 bytes · 1.4% of section data
MD5 299c176baf9f02e71190bdc86455cc17

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.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with a4fb8a6698eaa343a6777141a6cc375f.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.