How to remove the BN4 virus
Most antivirus programs identify BN4.tmp as malware, for instance Symantec identifies it as Trojan Horse or Backdoor.Trojan, and TrendMicro identifies it as TROJ_DROPPER.HPA or TROJ_FAM_000196d.TOMA.
The free file information forum can help you find out how to remove it. If you know more about this file, please leave a comment or a hint for other users.
Click to Run a Free Virus Scan for the BN4.tmp malware
BN4.tmp file information
BN4.tmp does not provide any particulars about the software with which the process was installed, nor is the developer identified within the file.
Description: BN4.tmp is located in a subfolder of C:\Windows.
Known file sizes on Windows 7/XP are 46,592 bytes (25% of all occurrences), 416,768 bytes, 184,320 bytes or 46,080 bytes. 
Program has no file description. BN4.tmp is an unknown file in the Windows folder. The program has no visible window. BN4.tmp is not a Windows system file.
BN4.tmp is able to monitor applications.
Therefore the technical security rating is 82% dangerous.
Recommended: Identify BN4.tmp related errors
If BN4.tmp is located in a subfolder of "C:\Documents and Settings", the security rating is 56% dangerous. The file size is 90,112 bytes. There is no information about the author of the file. The program is not visible. It is not a Windows core file.
Important: Some malware camouflages itself as BN4.tmp, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the BN4.tmp 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.
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BN4 scanner
Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan. MalwareBytes detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager. SpeedUpMyPC scans, cleans, repairs and optimizes your computer. |
Other processes
iconchng.dll _mprosrv.exe netfileserverengine.exe BN4.tmp kblock.sys hcdll2_26_win32.dll firstload.exe ezthemes_whenusavenow_installer.exe gdiehelp.dll dfrgsnapnt.exe dbrmtrayicon.exe [all]