GridinSoft Threat Intelligence

YTNavAssist.dll file report

Under review File reputation report
MD5 4d5ea8fa713123404fd372c59d8e94a3
Latest seen 2025-04-13 23:01:08 (a year ago)
First seen 2017-08-09 10:06:06 (8 years ago)
Size 182 KB
Publisher Yahoo! Inc.
Signed by Yahoo! Inc.

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2017-08-09 10:06:06 (8 years ago); latest analysis 2025-04-13 23:01:08 (a year ago).

Publisher context

Company metadata: Yahoo! Inc.. Product metadata: Yahoo! Toolbar Nav Assistant plugin.

Digital signature

Signed by Yahoo! 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.

YTNavAssist.dll is a Windows file recorded in the ThreatInfo database. It is associated with Yahoo! Toolbar Nav Assistant plugin. The reported company name is Yahoo! Inc.. The current detection status is Undefined, based on the latest analysis from 2025-04-13 23:01:08 (a year 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.

Product Name: Yahoo! Toolbar Nav Assistant plugin
Company Name: Yahoo! Inc.
MD5: 4d5ea8fa713123404fd372c59d8e94a3
Size: 182 KB
First Published: 2017-08-09 10:06:06 (8 years ago)
Latest Published: 2025-04-13 23:01:08 (a year ago)
Status: Undefined (on last analysis)
Analysis Date: 2025-04-13 23:01:08 (a year ago)
Signed By: Yahoo! Inc.
Status: Valid

The signature on YTNavAssist.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.

%programfiles%\yahoo!\companion\installs\cpn
%sysdrive%\arquivos de programas\yahoo!\companion\installs\cpn
%programfiles%\yahoo!\companion\installs\cpn1
%programfiles%\yahoo!\companion\installs\cpn0
%sysdrive%\archivos de programa\yahoo!\companion\installs\cpn
%programfiles%\yahoo!\companion\installs\cpn2
%programfiles%\yahoo!\companion\installs

ThreatInfo has observed YTNavAssist.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.

Windows 7 63.7%
Windows 10 27.3%
Windows Vista 4.2%
Windows XP 2.2%
Windows 8.1 1.5%
Windows 8 1.0%

The most common operating system signal for YTNavAssist.dll is Windows 7 with 63.7% 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.

YTNavAssist.dll 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 0x00010bb5
Image base 0x10000000

PE Sections:

Sections 5
Raw data 180224

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

.text 105984 bytes · 58.8% of section data
MD5 167ea958d5edfe8fb26630a6a6c03130
.rdata 34304 bytes · 19.0% of section data
MD5 a9df92b0009346779fa698aed9759a3a
.data 8704 bytes · 4.8% of section data
MD5 cd00b6435068faf746f680cb832dd289
.rsrc 19968 bytes · 11.1% of section data
MD5 29d0f3cf97d4aad65cd297823322be19
.reloc 11264 bytes · 6.3% of section data
MD5 abfce0b36b6a0bda7d2f5be2dec358ac

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 4d5ea8fa713123404fd372c59d8e94a3.
  • 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.