GridinSoft Threat Intelligence
previewshell.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Adware.KuaiZip. 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
- Adware.KuaiZip
- Recommended action
- Scan and remove
- Last analysis
- 2021-10-04 20:48:54 (4 years ago)
- File hash
- 07dfec6db5b28c8894ccbc459d5672d5
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Adware.KuaiZip, part of the Adware threat category.
Programs that inject advertising, change browser behavior, or monetize traffic through bundled components. Related Adware reports help compare this file with nearby detections, publishers, and hashes.
First seen 2021-10-04 20:48:54 (4 years ago); latest analysis 2021-10-04 20:48:54 (4 years ago).
Company metadata: 上海睦欣网络科技有限公司. Product metadata: 小新记事本.
Signed by 上海睦欣网络科技有限公司. 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 Adware category for related samples and common context.
File context
previewshell.dll is a Windows file recorded in the ThreatInfo database. It is associated with 小新记事本. The reported company name is 上海睦欣网络科技有限公司. The current detection status is Adware.KuaiZip, based on the latest analysis from 2021-10-04 20:48:54 (4 years ago). ThreatInfo groups this verdict with Adware reports for broader family-level investigation.
If previewshell.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 Adware.KuaiZip.
File Details
| Product Name: | 小新记事本 |
| Company Name: | 上海睦欣网络科技有限公司 |
| MD5: | 07dfec6db5b28c8894ccbc459d5672d5 |
| Size: | 2 MB |
| First Published: | 2021-10-04 20:48:54 (4 years ago) |
| Latest Published: | 2021-10-04 20:48:54 (4 years ago) |
| Status: | Adware.KuaiZip (on last analysis) | |
| Analysis Date: | 2021-10-04 20:48:54 (4 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: | 上海睦欣网络科技有限公司 |
| Status: | Valid |
The signature on previewshell.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:
| %temp% |
ThreatInfo has observed previewshell.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 previewshell.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 Italy 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 previewshell.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
previewshell.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.
9cd10cd258bef7c0d496564c44711203
a178a7100d703ecfcc48b23f3f0b0d9a
13d65d61618b944c20bd33095a395c0d
4a625f67fb5cb9d42319ffd1946ad28c
bf619eac0cdf3f68d496ea9344137e8b
c36be5df5996dffd93810f478b4a49ed
6ee01c143a0978f65004b51c6ec9374d
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 Adware.KuaiZip
This report identifies previewshell.dll by MD5 07dfec6db5b28c8894ccbc459d5672d5. It is part of the Adware 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.