GridinSoft Threat Intelligence
faststartExt64.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.Kaobeitu. 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.Kaobeitu
- Recommended action
- Scan and remove
- Last analysis
- 2021-10-04 20:23:19 (4 years ago)
- File hash
- 57b35c5fc71d5174febbee2957b3c5c3
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Adware.Kaobeitu, 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 2021-03-06 04:22:47 (5 years ago); latest analysis 2021-10-04 20:23:19 (4 years ago).
Company metadata: Shangrao Fengyun. Product metadata: faststart.
Signed by 上饶市风云网络科技有限公司. 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
faststartExt64.dll is a Windows file recorded in the ThreatInfo database. It is associated with faststart. The reported company name is Shangrao Fengyun. The current detection status is Adware.Kaobeitu, based on the latest analysis from 2021-10-04 20:23:19 (4 years ago). ThreatInfo groups this verdict with Adware reports for broader family-level investigation.
If faststartExt64.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.Kaobeitu.
File Details
| Product Name: | faststart |
| Company Name: | Shangrao Fengyun |
| MD5: | 57b35c5fc71d5174febbee2957b3c5c3 |
| Size: | 231 KB |
| First Published: | 2021-03-06 04:22:47 (5 years ago) |
| Latest Published: | 2021-10-04 20:23:19 (4 years ago) |
| Status: | Adware.Kaobeitu (on last analysis) | |
| Analysis Date: | 2021-10-04 20:23:19 (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: | 上饶市风云网络科技有限公司 |
| Status: | Valid |
The signature on faststartExt64.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:
| %appdata% |
| %temp% |
ThreatInfo has observed faststartExt64.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 faststartExt64.dll across 2 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is China with 50.0% 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 faststartExt64.dll is Windows Server 2012 R2 with 50.0% 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
faststartExt64.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.
ba491e94f999a312195eb259a1dafdc6
7495f90e4e611c869d521930002cb0b8
00f665968ef92a831f05e7f7c55c08f4
bba0f9e8e4565801a1ad4bb035b33460
1f354d76203061bfdd5a53dae48d5435
bd9c26361fa2d6c2859af2744a80dd53
5210f8349af151d49fdc323b2ac2e831
0793d0daee7ae2870c0397130b6115b0
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.Kaobeitu
This report identifies faststartExt64.dll by MD5 57b35c5fc71d5174febbee2957b3c5c3. 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.