YSearchUtil.dll file report

MD5 ec66c6cebf324f01a7faf3253f1abb25
Latest seen 2026-03-03 23:01:56 (2 months ago)
First seen 2026-02-26 23:01:16 (3 months ago)
Size 392 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 2026-02-26 23:01:16 (3 months ago); latest analysis 2026-03-03 23:01:56 (2 months ago).

Publisher context

Company metadata: Yahoo Inc.. Product metadata: Yahoo Search Utility.

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.

YSearchUtil.dll is a Windows file recorded in the ThreatInfo database. It is associated with Yahoo Search Utility. The reported company name is Yahoo Inc.. The current detection status is Undefined, based on the latest analysis from 2026-03-03 23:01:56 (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.

Product Name: Yahoo Search Utility
Company Name: Yahoo Inc.
MD5: ec66c6cebf324f01a7faf3253f1abb25
Size: 392 KB
First Published: 2026-02-26 23:01:16 (3 months ago)
Latest Published: 2026-03-03 23:01:56 (2 months ago)
Status: Undefined (on last analysis)
Analysis Date: 2026-03-03 23:01:56 (2 months ago)
Signed By: Yahoo! Inc.
Status: Valid

The signature on YSearchUtil.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!\yset
%programfiles%\yahoo!\yset

ThreatInfo has observed YSearchUtil.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.

100.0%

The strongest geographic signal for this file is United States with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

Windows 10 100.0%

The most common operating system signal for YSearchUtil.dll 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.

YSearchUtil.dll is identified as pe for 32 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.

Subsystem: Windows GUI
PE Type: pe
OS Bitness: 32
Image Base: 0x10000000
Entry Address: 0x00025845

PE Sections:

Name Size of data MD5
.text 227328 c9d06ef4ea2a887eeb2326e8357d519d
.rdata 98816 3146d4287b2b4cf6bc93bb925b18605f
.data 12800 43f55382d0b0bc02389ec844565cdaba
.rsrc 34816 99f0a33b82bcdb274a79b19cd93db240
.reloc 20992 3186198148de17b60604cc539fef089d

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.

More information: