GridinSoft Threat Intelligence
ext.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Hijack.Explorer. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Hijack.Explorer
- Recommended action
- Scan and remove
- Last analysis
- 2022-12-31 23:58:58 (3 years ago)
- File hash
- f7f5c80b31b6612ef5dffc30d2590cb0
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Hijack.Explorer, part of the Hijack threat category.
Browser, shortcut, proxy, or system-setting changes that redirect user activity. Related Hijack reports help compare this file with nearby detections, publishers, and hashes.
First seen 2022-12-31 23:58:58 (3 years ago); latest analysis 2022-12-31 23:58:58 (3 years ago).
Signed by LIMESTONE DIGITAL LIMITED. The signature is reported as valid, but signed files can still be bundled or abused.
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
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Hijack category for related samples and common context.
File context
ext.dll is a Windows file recorded in the ThreatInfo database. The current detection status is Hijack.Explorer, based on the latest analysis from 2022-12-31 23:58:58 (3 years ago). ThreatInfo groups this verdict with Hijack reports for broader family-level investigation.
If ext.dll appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Hijack.Explorer.
File Details
| MD5: | f7f5c80b31b6612ef5dffc30d2590cb0 |
| Size: | 604 KB |
| First Published: | 2022-12-31 23:58:58 (3 years ago) |
| Latest Published: | 2022-12-31 23:58:58 (3 years ago) |
| Status: | Hijack.Explorer (on last analysis) | |
| Analysis Date: | 2022-12-31 23:58:58 (3 years ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Overview
| Signed By: | LIMESTONE DIGITAL LIMITED |
| Status: | Valid |
The signature on ext.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.
Common Places:
| %localappdata% |
ThreatInfo has observed ext.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.
Geographic signal
Observed country distribution
ThreatInfo has seen ext.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Argentina with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for ext.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.
Analysis
ext.dll is identified as pe for 64-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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
41dd461fc305971d1c34c8c001df8a3a
d0d4d2e7f4b09259ddec42be249e5382
e862f3a1af8519e4340623963f41de78
52238fe090ac22617b2d4572b7e8ea9e
c357a1eba76647587aeefe65436bf7a5
d2ee17276963c8d20c59c74dee51b935
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
GridinSoft detects this file as Hijack.Explorer
This report identifies ext.dll by MD5 f7f5c80b31b6612ef5dffc30d2590cb0. It is part of the Hijack report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.