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: | 627 |
| Threat Level: | 10 % (Normal) |
| Infected Computers: | 119,893 |
| First Seen: | August 27, 2020 |
| Last Seen: | January 29, 2026 |
| OS(es) Affected: | Windows |
Table of Contents
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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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
Show More
- 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 |
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| Original Filename | DS-Setup.exe |
| Product Name |
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| 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 |
File Traits
- Installer Manifest
- Installer Version
- nosig nsis
- Nullsoft Installer
- x64
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-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-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 |
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| 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\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 |
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 |
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 |
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| User Data Access |
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| 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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