Where to Buy Trend Micro Products

For Home

For Small Business

1-888-762-8736
(M-F 8:00am-5:00pm CST)

For Enterprise

1-877-218-7353
(M-F 8:00am-5:00pm CST)

Not in the United States?
Select the country/language of your choice:

Asia Pacific Region

Europe

The Americas

Not in the United States?
Select the country/language of your choice:

Asia/Pacific

Europe

America

Login

For Home

For Business

For Partners

Threat Encyclopedia

BKDR_ZACCESS.NTW

ANALYSIS BY

Michael Cabel


PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

OVERALL RISK RATING:
DAMAGE POTENTIAL:
DISTRIBUTION POTENTIAL:
REPORTED INFECTION:

  • Threat Type:Backdoor

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW

TECHNICAL DETAILS

SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.708.03

FIRST VSAPI PATTERN DATE:

05 Feb 2013

VSAPI OPR PATTERN File:

9.709.00

VSAPI OPR PATTERN Date:

06 Feb 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Remove the malware/grayware file dropped/downloaded by BKDR_ZACCESS.NTW

Step 3

Remove the malware/grayware file that dropped/downloaded BKDR_ZACCESS.NTW

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\{GUID}\L
  • %Application Data%\{GUID}\U
  • %Windows%\Installer\{GUID}\L
  • %Windows%\Installer\{GUID}\U

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_ZACCESS.NTW. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 7

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.


  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\iphlpsvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\MpsSvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SharedAccess
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\wscsvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\wuauserv
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\Windows Defender

Step 8

Restore these deleted files from backup

*Note: Only Microsoft-related keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.


NOTES:

Please perform this step before proceeding to Step 8:

Move services.exe from %System%\Winsxs\Backup to %System%.


Did this description help? Tell us how we did.

Featured Stories

Connect with us on