EuFdDisk.sys file report

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• File Details
• Overview
• Analysis

Analyst brief

What this report says

ThreatInfo has not assigned a final verdict to EuFdDisk.sys. 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.

Category context

Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.

Timeline

First seen 2019-09-02 21:34:00 (6 years ago); latest analysis 2021-05-06 20:32:40 (5 years ago).

Publisher context

Company metadata: CHENGDU YIWO Tech Development Co., Ltd. Product metadata: EaseUS Todo Backup.

Digital signature

Signed by CHENGDU YIWO Tech Development Co., Ltd.;Chengdu Yiwo Technology Development Co., Ltd.. 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.

EuFdDisk.sys is a Windows file recorded in the ThreatInfo database. It is associated with EaseUS Todo Backup. The reported company name is CHENGDU YIWO Tech Development Co., Ltd. The current detection status is Undefined, based on the latest analysis from 2021-05-06 20:32:40 (5 years ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.

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

The signature on EuFdDisk.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 EuFdDisk.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.

Geographic signal

Observed country distribution

ThreatInfo has seen EuFdDisk.sys across 7 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Taiwan

Share 47.1%

Low High activity

The strongest geographic signal for this file is Taiwan with 47.1% 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 EuFdDisk.sys is Windows 7 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.

Analysis

EuFdDisk.sys is identified as pe for 32-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

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 45dada9974446e21b115504bf5294349.
• 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. Use the PUP category to compare similar reports.