BTHPORT.DLL is Rootkit ZeroAccess

May 21, 2012 by NightWatcher
Filed under: Rootkit 
: Solved!

Fix it immediately:

Rootkit BTHPORT.DLL is software that enables continued privileged access to a computer while actively hiding its presence.
Detection and removal of BTHPORT.DLL may be a very difficult process.
You should use anti-rootkit software to fix the BTHPORT.DLL problem.

Malware Analysis of BTHPORT.DLL
Full path on a computer: %SysDir%\bthport.dll

Detected by RegRun Warrior:

BTHPORT.DLL
Default location: %SysDir%\bthport.dll

Removal Results: Success
Number of reboot: 1

BTHPORT.DLL is known as:

Rootkit.ZeroAccess, Trojan.Sirefef

BTHPORT.DLL hash:

  • MD5: 11028c6a84a967070cb1286550f2058f
How to quickly detect BTHPORT.DLL presence?

Registry:
  • HKLM\System\CurrentControlSet\Enum\Root\LEGACY_BUFSERV\0000\Service: “bufserv”
  • HKLM\System\CurrentControlSet\Enum\Root\LEGACY_BUFSERV\0000\DeviceDesc: “Twdns”
  • HKLM\System\CurrentControlSet\Services\bufserv\Parameters\ServiceDll: “%systemroot%\system32\bthport.dll”
  • HKLM\System\CurrentControlSet\Services\bufserv\DisplayName: “Twdns”
  • HKLM\System\CurrentControlSet\Services\bufserv\Description: “Twdns”
Folders:
  • %WinDir%\$NtUninstallKB62478$
Files:
  • %SysDir%\bthport.dll
  • %SysDir%\dds_trash_log.cmd


Recommended: UnHackMe anti-rootkit and anti-malware

Premium software: RegRun Security Suite (Good choice for removal and protection)

Written by

Malware Hunter.

Tags: BTHPORT.DLL, Rootkit, ZeroAccess

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