GridinSoft Threat Intelligence

rsEngineFW_x86.dll file report

Under review File reputation report
MD5 9f0f9cf8d69f2bc4d7e19fdb038b91bf
Latest seen 2026-03-18 23:00:51 (2 months ago)
First seen 2018-02-03 17:12:52 (8 years ago)
Size 86 KB
Publisher Reason Software Company Inc.
Product Reason Security Engine File Watcher
Signed by Reason Software Company Inc.

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2018-02-03 17:12:52 (8 years ago); latest analysis 2026-03-18 23:00:51 (2 months ago).

Publisher context

Company metadata: Reason Software Company Inc.. Product metadata: Reason Security Engine File Watcher.

Digital signature

Signed by Reason Software Company 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

rsEngineFW_x86.dll is a Windows file recorded in the ThreatInfo database. It is associated with Reason Security Engine File Watcher. The reported company name is Reason Software Company Inc.. The current detection status is Undefined, based on the latest analysis from 2026-03-18 23:00:51 (2 months 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: Reason Security Engine File Watcher
Company Name: Reason Software Company Inc.
MD5: 9f0f9cf8d69f2bc4d7e19fdb038b91bf
Size: 86 KB
First Published: 2018-02-03 17:12:52 (8 years ago)
Latest Published: 2026-03-18 23:00:51 (2 months ago)
Status: Undefined (on last analysis)
Analysis Date: 2026-03-18 23:00:51 (2 months ago)

Overview

Signed By: Reason Software Company Inc.
Status: Valid

The signature on rsEngineFW_x86.dll 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%\bytefence
%sysdrive%\archivos de programa\bytefence
%programfiles%\segurazo
%commonappdata%\segurazo\b
%programfiles%\santivirus
%commonappdata%\santivirus\b
%programfiles%\digital communications\santivirus

ThreatInfo has observed rsEngineFW_x86.dll 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 rsEngineFW_x86.dll across 69 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Brazil
Share 10.3%
Low High activity

The strongest geographic signal for this file is Brazil with 10.3% 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 62.6%
Windows 7 29.5%
Windows 8.1 6.0%
Windows 8 0.8%
Windows XP 0.7%
Windows Vista 0.2%

The most common operating system signal for rsEngineFW_x86.dll is Windows 10 with 62.6% 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

rsEngineFW_x86.dll is identified as pe for 32-bit systems. The subsystem is Windows CUI. 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 CUI
Entry point 0x000017df
Image base 0x10000000

PE Sections:

Sections 5
Raw data 74752

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

.text 43008 bytes · 57.5% of section data
MD5 ba6a71c47b87d7a6f52d1b71b5a0b2a9
.rdata 23552 bytes · 31.5% of section data
MD5 ec5e4e609bb3c0653b5f49faa4e91d0d
.data 2048 bytes · 2.7% of section data
MD5 78a39140770c24de06e11763e0d8e137
.rsrc 2048 bytes · 2.7% of section data
MD5 e142e65277f70f538306d748d04fc5ee
.reloc 4096 bytes · 5.5% of section data
MD5 f461709b9d4ec6110a25c5653d51bb01

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 9f0f9cf8d69f2bc4d7e19fdb038b91bf.
  • 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.