GridinSoft Threat Intelligence
OptimizeTool.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.ChinAd. 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
- PUP.ChinAd
- Recommended action
- Scan and remove
- Last analysis
- 2022-07-15 23:53:19 (3 years ago)
- File hash
- 3fbc026ed2a4df25c429fb21b5a01c53
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.ChinAd, part of the PUP threat category.
Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.
First seen 2018-12-06 13:03:33 (7 years ago); latest analysis 2022-07-15 23:53:19 (3 years ago).
Company metadata: 2345移动科技. Product metadata: 2345加速浏览器上网加速模块.
Signed by Shanghai 2345 Mobile Technology Co., Ltd.. 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 PUP category for related samples and common context.
File context
OptimizeTool.dll is a Windows file recorded in the ThreatInfo database. It is associated with 2345加速浏览器上网加速模块. The reported company name is 2345移动科技. The current detection status is PUP.ChinAd, based on the latest analysis from 2022-07-15 23:53:19 (3 years ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.
If OptimizeTool.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 PUP.ChinAd.
File Details
| Product Name: | 2345加速浏览器上网加速模块 |
| Company Name: | 2345移动科技 |
| MD5: | 3fbc026ed2a4df25c429fb21b5a01c53 |
| Size: | 1 MB |
| First Published: | 2018-12-06 13:03:33 (7 years ago) |
| Latest Published: | 2022-07-15 23:53:19 (3 years ago) |
| Status: | PUP.ChinAd (on last analysis) | |
| Analysis Date: | 2022-07-15 23:53:19 (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: | Shanghai 2345 Mobile Technology Co., Ltd. |
| Status: | Valid |
The signature on OptimizeTool.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:
| %programfiles%\2345soft\2345explorer |
| %localappdata%\2345explorer\application\9.5.0.17997 |
| %localappdata%\2345explorer\application\9.9.0.19250 |
| %localappdata%\2345explorer\application\10.4.0.19704 |
| %localappdata%\2345explorer\application\10.3.0.19580 |
| %localappdata%\2345explorer\application\10.10.0.20604 |
| %sysdrive%\2345explorer |
ThreatInfo has observed OptimizeTool.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 OptimizeTool.dll across 7 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Taiwan with 46.7% 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 OptimizeTool.dll is Windows 10 with 73.3% 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
OptimizeTool.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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
e2d55f1d0c6d04c3aa3d73f7bbc8f104
99d1105cf933521a170265da50c5d233
26c37af66493256b9dfd66206e7b926d
ca3880f6d8ef59aa7d46fa0b3e13f4ec
51caf5ef447610e43bf3f02f14a7534f
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 PUP.ChinAd
This report identifies OptimizeTool.dll by MD5 3fbc026ed2a4df25c429fb21b5a01c53. It is part of the PUP 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.