WdfCoInstaller01009.dll file report

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• File Details
• Overview
• Analysis

Analyst brief

What this report says

ThreatInfo has not assigned a final verdict to WdfCoInstaller01009.dll. The metadata below can still help compare the file identity, origin, and observed behavior against a copy found on a device.

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.

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2018-07-09 22:04:38 (7 years ago); latest analysis 2024-11-11 23:00:51 (a year ago).

Publisher context

Company metadata: Microsoft Corporation. Product metadata: Microsoft® Windows® Operating System.

Digital signature

Signed by Microsoft Windows Component Publisher. ThreatInfo marks this publisher as trusted for this record.

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. 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.

WdfCoInstaller01009.dll is a Windows file recorded in the ThreatInfo database. It is associated with Microsoft® Windows® Operating System. The reported company name is Microsoft Corporation. The current detection status is Undefined, based on the latest analysis from 2024-11-11 23:00:51 (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.

File Details

Overview

ThreatInfo marks this publisher as trusted for this record, but the file hash and source should still match the expected software distribution.

ThreatInfo has observed WdfCoInstaller01009.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.

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.

The strongest geographic signal for this file is United Kingdom with 35.3% 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 WdfCoInstaller01009.dll is Windows 10 with 82.4% 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

WdfCoInstaller01009.dll is identified as pe for 64 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.

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.