PUP.DownloadStudio
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 643 |
| Threat Level: | 10 % (Normal) |
| Infected Computers: | 121,387 |
| First Seen: | August 27, 2020 |
| Last Seen: | October 4, 2026 |
| OS(es) Affected: | Windows |
The detection of PUP.DownloadStudio on your system indicates the presence of a potentially unwanted program (PUP) that may be causing issues with your computer's performance and security. It is essential to understand the nature of this threat and take appropriate steps to remove it to prevent any potential harm.
Table of Contents
What Is PUP.DownloadStudio?
PUP.DownloadStudio is a type of potentially unwanted program that can be installed on your computer without your knowledge or consent. It may be bundled with other software or downloaded from the internet, often through deceptive means. PUPs like PUP.DownloadStudio can cause a range of problems, including slowing down your computer, displaying unwanted advertisements, and potentially leading to more severe malware infections.
How PUP.DownloadStudio Operates
PUP.DownloadStudio, like other PUPs, operates by installing itself on your computer and then executing its payload. This can include displaying advertisements, collecting user data, or installing additional malware. PUPs can also modify system settings, such as changing your default search engine or homepage, to generate revenue for their creators. In some cases, PUPs can also be used to distribute more severe malware, such as Trojans or ransomware, making it essential to remove them as soon as possible.
Symptoms of Infection
If your computer is infected with PUP.DownloadStudio, you may experience a range of symptoms, including slow system performance, unwanted advertisements, and changes to your system settings. You may also notice that your browser is redirecting to unfamiliar websites or that your search results are being hijacked. In some cases, you may not notice any symptoms at all, making it essential to regularly scan your computer for malware and PUPs.
- Unwanted advertisements or pop-ups
- Slow system performance
- Changes to system settings, such as default search engine or homepage
- Browser redirects or hijacked search results
- Unexplained crashes or system instability
How to Remove PUP.DownloadStudio
Removing PUP.DownloadStudio requires a combination of technical knowledge and the right tools. Here's a step-by-step guide to help you remove this PUP:
- Boot your computer in Safe Mode with Networking to prevent PUP.DownloadStudio from loading and to allow you to download and install removal tools.
- Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your computer to detect and remove PUP.DownloadStudio and any other malware.
- Uninstall any suspicious programs that may be related to PUP.DownloadStudio, taking care to follow the uninstallation instructions carefully.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any changes made by PUP.DownloadStudio.
- Reboot your computer and perform a second scan with your anti-malware tool to ensure that PUP.DownloadStudio has been completely removed.
Conclusion
Removing PUP.DownloadStudio from your computer requires attention to detail and the right tools. By following the steps outlined above, you can help ensure that your computer is free from this potentially unwanted program and any other malware that may be present. Remember to always be cautious when downloading software from the internet and to regularly scan your computer for malware to prevent future infections.
SpyHunter Detects & Remove PUP.DownloadStudio
Registry Details
PUP.DownloadStudio may create the following registry entry or registry entries:
File name without path
Download Studio.lnk
SOFTWARE\Classes\.dsfile
SOFTWARE\Classes\DownloadStudio.DsFile.1
SOFTWARE\Classes\DownloadStudio.MagnetUri.1
SOFTWARE\Classes\DownloadStudio.TorrentFile.1
SOFTWARE\Classes\MIME\Database\Content Type\application/x-dsfile
SOFTWARE\Grand Media
Software\Microsoft\Windows\CurrentVersion\Run\Download Studio
SOFTWARE\RegisteredApplications\Download Studio
{636FDC4D-DDA7-48CA-AEFF-D3CC57A43A7E}_is1
Directories
PUP.DownloadStudio may create the following directory or directories:
| %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\Download Studio |
| %LOCALAPPDATA%\Grand Media |
| %PROGRAMFILES%\Download Studio |
| %PROGRAMFILES(x86)%\Download Studio |
Analysis Report
General information
| Family Name: | PUP.DownloadStudio |
|---|---|
| Signature status: | Root Not Trusted |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
fc05d8e0861c6dfac420b0f43078ae10
SHA1:
2e47095f9ab350301f47c30e794771d435630585
File Size:
2.22 MB, 2220976 bytes
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MD5:
a5493f365397a6e51fd4d1a3cf31403c
SHA1:
1870d4a4859dd205511114f31cb9c1719473d0cb
SHA256:
4F214AC442A92DC247D8D881C2DA32A12A9657AE2CD4B07843F2A8037263897C
File Size:
2.22 MB, 2224072 bytes
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MD5:
05b138e96f7a8d2016799d490235d5ee
SHA1:
b3f1c8f4289ee5b5a4bf59ceef77cc8f1ce08550
SHA256:
3C6A2115CC72B9637395A56FD15640EA713A7162D98CFE60C6A7EBF02218DA3B
File Size:
8.14 MB, 8142794 bytes
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MD5:
9525cfcc52b8934127be32cd1ee7c2e1
SHA1:
5b81f9b12c3224c64a7f8be0d2a690599a9985d9
SHA256:
3D92699EFA8A45601AE59F0072315EFB8F3397E7CA5826253790814196EB83DA
File Size:
4.92 MB, 4915164 bytes
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MD5:
d9da69f635f479c6290998c0f49d6306
SHA1:
b3474252c58e9fdfe0f0d9580065952ae3f72e8a
SHA256:
9E59E0D7AAE919E83767392A85BFCBDEDA9FA83B89E11116831254EFA760989F
File Size:
868.30 KB, 868298 bytes
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MD5:
d11b545e22f91ff86fd33339909ddff0
SHA1:
7017a6b272a7fe8e38c882ded53ffa4b1c7f7b86
SHA256:
375EA9F1F20E2300DD3B0C1297E12FF58D98EEE1498E730172C2845EDD77CF87
File Size:
542.98 KB, 542976 bytes
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MD5:
e267488a667723f6357520688f94546b
SHA1:
254a7f30c4f30f5b4ce947cfa682f07ad7ee1abd
SHA256:
DA1D61F353BB58FE7390B18C2D7F2FF7D4EDD1BB6D0C1F3D333F554273ED6017
File Size:
615.58 KB, 615584 bytes
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MD5:
9c7c53fdc96209accebd4f3ed13d2996
SHA1:
f1ff67d82bae178f7ee1e2f8218e0d32d52c95c9
SHA256:
D31FD1087C8AC65462B011BED64BFCA05B1412584A540A33914AF17CDD24AA5D
File Size:
835.49 KB, 835494 bytes
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MD5:
f1a4ddd106d2e4e5b66e187a32ddd77d
SHA1:
a0902cdd0436b185e244e9fa014d9aecd94bf809
SHA256:
361770C6C3508EC384BA5098C825A983EEA349D2E01FC4011D84BED11475CE8A
File Size:
736.97 KB, 736969 bytes
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MD5:
273402816948fd501d60d15ae6ec5b79
SHA1:
fb4d41bfb2647326b112072c5ddde0b8fe184bdc
SHA256:
E410C1D5E4BAAB59B0B8546F5D6E263A5E00F9F8AC6335E61F0ACF105B715196
File Size:
2.21 MB, 2211200 bytes
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MD5:
6b1533f844775ac59b040ff05e709939
SHA1:
6b2dcf33113aae6c99d29f6378cec598536dfd47
SHA256:
D0E3EE2A0C4A515D0485DBF52382ED80B43340FADC1862B8381CEB2692DA1DE9
File Size:
573.42 KB, 573422 bytes
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MD5:
8628b6788e299f2699af944acbb272cf
SHA1:
e481bd7b423ec34d2cb2dbb1c1863f94f1b3f116
SHA256:
6D6EC8956F9B03BB26AD35727914E1FA6AD211FAE14527F47B5E9F5455779ACE
File Size:
6.29 MB, 6291456 bytes
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MD5:
a0684d1808d8e8937bccdd1b55941791
SHA1:
5c1915e9300d04ae8ea7ad0fc1ddda9014c452b6
SHA256:
0942666F4FD5EEFF41F5655F10E144434D3618ACE98281464E82B08949360392
File Size:
646.14 KB, 646144 bytes
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MD5:
7f11a210f2ac8d6f45de191968d23e62
SHA1:
1b6268bd6820f49551dd729993cd82c0b8a854f5
SHA256:
EC184E0D716C338248E74DE6CC29C1CEDEFF499455C5578A5C7620BB63159738
File Size:
1.13 MB, 1134512 bytes
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MD5:
7b270f4efc330249d95bbd479995624b
SHA1:
d735a886f32482b12a00eed053b379d981ab041b
SHA256:
2392E9D8D2A7D7964AA8304C81527F208671D233247E6FDCBB80E890653FDB8D
File Size:
542.98 KB, 542976 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have relocations information
- File doesn't have security information
- File has exports table
- File has TLS information
- File is 32-bit executable
- File is 64-bit executable
- File is either console or GUI application
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- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Build |
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| Comments | This installation was built with Inno Setup. |
| Company Name |
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| File Description |
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| File Version |
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| Internal Name | DS-Setup.exe |
| Legal Copyright |
|
| Original Filename | DS-Setup.exe |
| Product Name |
|
| Product Version |
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Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| CHESTER HOUSE FREEHOLD LIMITED | Sectigo Public Code Signing Root R46 | Root Not Trusted |
| Kabelsmeden ApS | USERTrust RSA Certification Authority | Root Not Trusted |
| NowusGroup ApS | USERTrust RSA Certification Authority | Root Not Trusted |
| UTL SMART COMPANY, TOV | USERTrust RSA Certification Authority | Hash Mismatch |
File Traits
- Installer Manifest
- Installer Version
- nosig nsis
- Nullsoft Installer
- x64
- x86
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| c:\users\user\appdata\local\temp\is-3bevm.tmp\2e47095f9ab350301f47c30e794771d435630585_0002220976.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-efqpf.tmp\fb4d41bfb2647326b112072c5ddde0b8fe184bdc_0002211200.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-ftvl9.tmp\1b6268bd6820f49551dd729993cd82c0b8a854f5_0001134512.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-fu2rk.tmp\1870d4a4859dd205511114f31cb9c1719473d0cb_0002224072.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-hq9l7.tmp\_isetup\_iscrypt.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-hq9l7.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-hq9l7.tmp\idp.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-ppfht.tmp\_isetup\_iscrypt.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-ppfht.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-ppfht.tmp\idp.dll | Generic Write,Read Attributes |
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| c:\users\user\appdata\local\temp\is-si46u.tmp\_isetup\_iscrypt.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-si46u.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-si46u.tmp\idp.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-smjru.tmp\_isetup\_iscrypt.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-smjru.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-smjru.tmp\idp.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\modern-header.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\nsdialogs.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\nsjson.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\stdutils.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsb3d2a.tmp\uac.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsi5b74.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsj8fd5.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\modern-header.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\nsdialogs.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\nsjson.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\stdutils.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsj8fd6.tmp\uac.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsl3d29.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\modern-header.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\nsdialogs.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\nsjson.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\stdutils.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsx5b84.tmp\uac.dll | Generic Write,Read Attributes |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\content::cacheprefix | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\cookies::cacheprefix | Cookie: | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\history::cacheprefix | Visited: | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKCU\software\microsoft\ctf\msutb::left | ঔ | RegNtPreCreateKey |
| HKCU\software\microsoft\ctf\msutb::top | RegNtPreCreateKey | |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m �� �v����%�(�1�1HO @V� H[u_�za$b"hc�w k�ql(�{b��P� ����� ��� ������m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
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| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m �� �v����%�(�1�1HO @V� H[u_�za$b"hc�w e�vk�ql(�{b��P� ����� ��� ������m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m " �� �v����%�(�,=� 1�1HO @V� H[uN� _�za$b"hc�w e�vk�ql(�y�9 {b��P� ����� ��� ������m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m # �� �v �� ����%�(�,=� 1�1HO @V� H[uN� _�za$b"hc�w e�vk�ql(�y�9 {b��P� ����� ��� ������m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m $ �� �v �� ����%�(�,=� 1�1HO @V� H[uN� _�za$b"hc�w e�vk�ql(�y�9 {b��P� ����� ��� �������y�m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m % �� �v �� ����%�(�,=� 1�1HO @V� H[uN� _�za$b"hc�w e�� e�vk�ql(�y�9 {b��P� ����� ��� �������y�m� �V ����$�8წ�� �=�S) � B1_ T�Vw��i� �`� ��%������ �AE��D��&��$���L | RegNtPreCreateKey |
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Process Shell Execute |
|
| User Data Access |
|
| Keyboard Access |
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| Network Winhttp |
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| Syscall Use |
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| Anti Debug |
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| Network Wininet |
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| Process Manipulation Evasion |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
"C:\Users\Hbkpaccz\AppData\Local\Temp\is-3BEVM.tmp\2e47095f9ab350301f47c30e794771d435630585_0002220976.tmp" /SL5="$20250,1322416,902656,c:\users\user\downloads\2e47095f9ab350301f47c30e794771d435630585_0002220976.exe"
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"C:\Users\Qvpgrzjm\AppData\Local\Temp\is-FU2RK.tmp\1870d4a4859dd205511114f31cb9c1719473d0cb_0002224072.tmp" /SL5="$10252,1333810,894464,c:\users\user\downloads\1870d4a4859dd205511114f31cb9c1719473d0cb_0002224072"
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"C:\Users\Enxlmgoa\AppData\Local\Temp\is-EFQPF.tmp\fb4d41bfb2647326b112072c5ddde0b8fe184bdc_0002211200.tmp" /SL5="$6033A,1314224,894464,c:\users\user\downloads\fb4d41bfb2647326b112072c5ddde0b8fe184bdc_0002211200"
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"C:\Users\Qzojpidy\AppData\Local\Temp\is-FTVL9.tmp\1b6268bd6820f49551dd729993cd82c0b8a854f5_0001134512.tmp" /SL5="$503F4,663339,235008,c:\users\user\downloads\1b6268bd6820f49551dd729993cd82c0b8a854f5_0001134512"
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