yunshellext64.dll.vir threat report
ThreatInfo file report
yunshellext64.dll.vir
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.Baidu. 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.Baidu
- Recommended action
- Scan and remove
- Last analysis
- 2021-07-05 20:36:35 (4 years ago)
- File hash
- 72c93f99d3cebc5cf3cca68ca80b940b
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.Baidu.
First seen 2017-05-21 05:04:39 (8 years ago); latest analysis 2021-07-05 20:36:35 (4 years ago).
Product metadata: BaiduYunGuanjia Application.
Signed by BeiJing Baidu Netcom Science Technology Co., Ltd. The signature is reported as valid, but signed files can still be bundled or abused.
This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.
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.
File context
yunshellext64.dll.vir is a Windows file recorded in the ThreatInfo database. It is associated with BaiduYunGuanjia Application. The current detection status is PUP.Baidu, based on the latest analysis from 2021-07-05 20:36:35 (4 years ago).
If yunshellext64.dll.vir 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.Baidu.
File Details
| Product Name: | BaiduYunGuanjia Application |
| MD5: | 72c93f99d3cebc5cf3cca68ca80b940b |
| Size: | 243 KB |
| First Published: | 2017-05-21 05:04:39 (8 years ago) |
| Latest Published: | 2021-07-05 20:36:35 (4 years ago) |
| Status: | PUP.Baidu (on last analysis) | |
| Analysis Date: | 2021-07-05 20:36:35 (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: | BeiJing Baidu Netcom Science Technology Co., Ltd |
| Status: | Valid |
The signature on yunshellext64.dll.vir 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%\baidu\autoupdate |
| %appdata%\baidu\baidunetdisk |
| %appdata%\baidu\baiduyunguanjia |
| %profile%\downloads\baidunetdisk_portable\baidunetdisk_portable\baidunetdisk |
| %sysdrive%\system volume information\_restore{f14a1c2c-a641-43f9-a293-b0cb265a4677}\rp1244 |
| %desktop%\utility\baiduyun 5.5.0 (portable)\baidunetdisk |
| %appdata%\baidu\baidunetdisk\autoupdate\download\mainapp\fullpackage_5541.cab |
| %sysdrive%\windows.old\users\jojo\appdata\roaming\baidu\baidunetdisk |
| %sysdrive%\windows.old\users\johnny\appdata\roaming\baidu\baidunetdisk\autoupdate\download\mainapp\fullpackage_5541.cab |
| %appdata%\baidu\baidu netdisk |
ThreatInfo has observed yunshellext64.dll.vir 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.
File Names:
| yunshellext64.dll |
| YunShellExt64.dll |
| YunShellExt64.dll.quarantined |
| YunShellExt64.dll.20170519225704 |
| A0428765.dll |
| yunshellext64.dll.old |
| yunshellext64.dll.vir |
This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.
Geography:
| 50.2% | ||
| 20.7% | ||
| 8.8% | ||
| 8.1% | ||
| 2.1% | ||
| 1.8% | ||
| 1.8% | ||
| 1.1% | ||
| 1.1% | ||
| 0.7% | ||
| 0.7% | ||
| 0.7% | ||
| 0.7% | ||
| 0.4% | ||
| 0.4% | ||
| 0.4% | ||
| 0.4% | ||
| 0.4% |
The strongest geographic signal for this file is Taiwan with 50.2% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
| Windows 10 | 48.6% | |
| Windows 7 | 44.1% | |
| Windows 8.1 | 4.5% | |
| Windows Server 2008 R2 | 1.4% | |
| Windows 8 | 0.7% | |
| Windows XP | 0.3% | |
| Windows Embedded Standard | 0.3% |
The most common operating system signal for yunshellext64.dll.vir is Windows 10 with 48.6% 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
yunshellext64.dll.vir is identified as pe for 64 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.
| Subsystem: | Windows GUI |
| PE Type: | pe |
| OS Bitness: | 64 |
| Image Base: | 0x0000000180000000 |
| Entry Address: | 0x00011498 |
PE Sections:
| Name | Size of data | MD5 |
| .text | 150528 | 24c5ad0def92a88f22f3304738e766ef |
| .rdata | 64000 | 5b394d8e13d4a3c88c9acf7a3b1f9959 |
| .data | 9728 | 3e8f24bf2748979aef475981b1d823ae |
| .pdata | 8192 | 806fc78e904dfc53ac4bad4fba384e0b |
| .rsrc | 6656 | 672eb46bb2e4142d6c78eaf3105135e8 |
| .reloc | 2560 | 6a64c3b42c602952548d8d60fffe4268 |
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.
More information:
