The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the stub.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
The process known as Conduit or Setup Stub belongs to software AVG Download Manager or Install ToolBox SDK by Conduit (www.conduit.com) or AVG Technologies CZ, s.r.o (www.freeavg.com) or Symantec (www.symantec.com) or AVG Technologies (www.freeavg.com).
Description: Stub.exe is not essential for Windows and will often cause problems. Stub.exe is located in a subfolder of the user's profile folder.
Known file sizes on Windows 10/8/7/XP are 90,112 bytes (14% of all occurrences), 1,021,208 bytes and 11 more variants.
Stub.exe is not a Windows core file. The file is a file with no information about its developer. The program has a visible window. The process starts upon Windows startup (see Registry key: Run, RunOnce). Stub.exe is able to monitor applications. Therefore the technical security rating is 51% dangerous, however you should also read the user reviews.
Recommended: Identify stub.exe related errors
If stub.exe is located in a subfolder of Windows folder for temporary files, the security rating is 32% dangerous. The file size is 81,736 bytes (57% of all occurrences), 88,880 bytes or 88,768 bytes. The stub.exe file is a file with no information about its developer. The program is not visible. It is a Verisign signed file. The file is digitally signed. The stub.exe file is not a Windows core file. Stub.exe is able to monitor applications and record keyboard and mouse inputs.
If stub.exe is located in a subfolder of "C:\Program Files", the security rating is 48% dangerous. The file size is 316,818 bytes (50% of all occurrences) or 82,104 bytes. There is no information about the author of the file. Stub.exe is not a Windows system file.
If stub.exe is located in the Windows folder for temporary files, the security rating is 64% dangerous. The file size is 897,024 bytes.
External information from Paul Collins:
Important: Some malware camouflages itself as stub.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Gen:Variant.Graftor.243829 (detected by BitDefender), and Generic PUA HB (PUA) (detected by Sophos). Therefore, you should check the stub.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with stub. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the stub.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.