$RLB1JG4.sys threat report

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• Overview
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Analyst brief

What this report says

GridinSoft Anti-Malware detects $RLB1JG4.sys as Adware.NetFilter. The sample was last observed on 2025-05-09 23:00:48 (a year ago) and reports publisher metadata associated with Web Viewer Pro / Web Viewer Pro.

This page combines the detection verdict with file identity, publisher metadata, alternate names, observed paths, geography, OS signals, and PE details so the report reads as a triage record rather than a standalone download page.

GridinSoft Anti-Malware detection

Detected by GridinSoft before you download

The current ThreatInfo record shows this exact file hash detected as Adware.NetFilter. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.

Detection name

Adware.NetFilter

Recommended action

Scan and remove

Last analysis

2025-05-09 23:00:48 (a year ago)

File hash

2e656f893673c6746831fac049ae6417

Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Adware.NetFilter.

Timeline

First seen 2017-05-27 10:08:32 (8 years ago); latest analysis 2025-05-09 23:00:48 (a year ago).

Publisher context

Company metadata: Web Viewer Pro. Product metadata: Web Viewer Pro.

Digital signature

Signed by POLAR-F,TOV. The signature is reported as valid, but signed files can still be bundled or abused.

Aliases

This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.

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. Compare the MD5 above with the file found on the device.
2. Check whether the file appears in the observed locations or under one of the alternate names.
3. Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present.

$RLB1JG4.sys is a Windows file recorded in the ThreatInfo database. It is associated with Web Viewer Pro. The reported company name is Web Viewer Pro. The current detection status is Adware.NetFilter, based on the latest analysis from 2025-05-09 23:00:48 (a year ago).

If $RLB1JG4.sys appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Adware.NetFilter.

File Details

The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.

Overview

The signature on $RLB1JG4.sys 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.

ThreatInfo has observed $RLB1JG4.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.

This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.

Geographic signal

Observed country distribution

ThreatInfo has seen $RLB1JG4.sys across 12 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Russian Federation

Share 64.5%

Low High activity

The strongest geographic signal for this file is Russian Federation with 64.5% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

The most common operating system signal for $RLB1JG4.sys is Windows 10 with 87.2% 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

$RLB1JG4.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 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

GridinSoft detects this file as Adware.NetFilter

This report identifies $RLB1JG4.sys by MD5 2e656f893673c6746831fac049ae6417. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

• Compare the local file MD5 with 2e656f893673c6746831fac049ae6417.
• Check the file path, publisher, and signature against the details in this report.
• Run a GridinSoft scan and remove the object if the same hash is found.