GridinSoft Threat Intelligence

RtlLib.dll.Cover file report

Clean record File reputation report
MD5 5795103ac937307a23438a141dae52c5
Latest seen 2025-11-28 23:00:25 (6 months ago)
First seen 2017-05-21 03:02:09 (9 years ago)
Size 511 KB
Publisher Realtek Semiconductor Corp.
Product RtlLib Dynamic Link Library
Signed by Realtek Semiconductor Corp

Why it matters

Evidence available for this file

Detection

Latest status is clean for this hash.

Timeline

First seen 2017-05-21 03:02:09 (9 years ago); latest analysis 2025-11-28 23:00:25 (6 months ago).

Publisher context

Company metadata: Realtek Semiconductor Corp.. Product metadata: RtlLib Dynamic Link Library.

Digital signature

Signed by Realtek Semiconductor Corp. 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. Confirm the hash and publisher match the expected software.
  2. Review the observed locations and signature information below.
  3. Rescan if the file was downloaded from an unknown source or appears in an unusual path.

File context

RtlLib.dll.Cover is a Windows file recorded in the ThreatInfo database. It is associated with RtlLib Dynamic Link Library. The reported company name is Realtek Semiconductor Corp.. The current detection status is Clean, based on the latest analysis from 2025-11-28 23:00:25 (6 months ago).

This record is currently marked as clean, but file reputation can depend on the exact path, hash, and source. Compare the MD5 and publisher data below with the file on your system.

File Details

Product Name: RtlLib Dynamic Link Library
Company Name: Realtek Semiconductor Corp.
MD5: 5795103ac937307a23438a141dae52c5
Size: 511 KB
First Published: 2017-05-21 03:02:09 (9 years ago)
Latest Published: 2025-11-28 23:00:25 (6 months ago)
Status: Clean (on last analysis)
Analysis Date: 2025-11-28 23:00:25 (6 months ago)

Overview

Signed By: Realtek Semiconductor Corp
Status: Valid

The signature on RtlLib.dll.Cover 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:

%localappdata%\ucbrowser\user data\ucwifi\1.0.0.8
%programfiles%\ucbrowser\application\6.1.2015.1007
%programfiles%\ucbrowser\application\6.0.1308.1201
%programfiles%\ucbrowser\application\5.7.16817.1002
%localappdata%\ucbrowser\user data_i18n\ucwifi\2.0.0.0
%programfiles%\ucbrowser\application\5.6.11651.1013
%programfiles%\ucbrowser\application\5.6.11651.1013\update\0\remote\0_beta_package\5.6.12265.1017
%programfiles%\ucbrowser\application\5.7.16281.1003
%programfiles%\ucbrowser\application\5.7.15533.1010
%programfiles%\ucbrowser\application\5.6.12265.1017

ThreatInfo has observed RtlLib.dll.Cover 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.

File Names:

2 observed names
RtlLib.dll RtlLib.dll.Cover

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 RtlLib.dll.Cover across 85 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Vietnam
Share 13.9%
Low High activity

The strongest geographic signal for this file is Vietnam with 13.9% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 7 50.2%
Windows 10 40.3%
Windows 8.1 5.9%
Windows 8 2.3%
Windows XP 0.9%
Windows Vista 0.2%
Windows Embedded 8.1 0.1%
Windows Server 2003 0.1%

The most common operating system signal for RtlLib.dll.Cover is Windows 7 with 50.2% 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

RtlLib.dll.Cover 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 0x00048881
Image base 0x10000000

PE Sections:

Sections 5
Raw data 515072

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

.text 378368 bytes · 73.5% of section data
MD5 d2d167bb6e9f7af01146c2cf54a9c7c7
.rdata 75776 bytes · 14.7% of section data
MD5 ccb4fe13f20dbda041c8f1725e062847
.data 10240 bytes · 2.0% of section data
MD5 000b940cbc328665678fbb0ae30e0317
.rsrc 15872 bytes · 3.1% of section data
MD5 ca75642941d1a81677049e8b8ac4fcb1
.reloc 34816 bytes · 6.8% of section data
MD5 69a9ef5efe2efed3a39a5829f1dab27b

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 hash is currently recorded as clean

Use the MD5, publisher, signature, and observed paths in this report to verify that the file on your device is the same copy described here.

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 5795103ac937307a23438a141dae52c5.
  • 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.