BKDR_POISON.SMKM
Windows 2000, XP, Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This backdoor may be downloaded by other malware/grayware/spyware from remote sites. It may be unknowingly downloaded by a user while visiting malicious websites.
It opens a hidden Internet Explorer window. It connects to a website to send and receive information.
TECHNICAL DETAILS
Arrival Details
This backdoor may be downloaded by other malware/grayware/spyware from remote sites.
It may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This backdoor injects itself into the following processes running in the affected system's memory:
- EXPLORER.EXE
Other System Modifications
This backdoor adds the following registry keys as part of its installation routine:
HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
bricks\Settings
HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
bricks\Recent File List
Backdoor Routine
This backdoor opens a hidden Internet Explorer window.
It connects to the following websites to send and receive information:
- test.{BLOCKED}.10dig.net
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Restart in Safe Mode
Step 3
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
- In HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
- bricks
- bricks
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_POISON.SMKM. 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.
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