This worm has backdoor capabilities. It opens a random port, connects to a certain Internet Relay Chat (IRC) server, and joins a certain channel upon connection. It then listens for commands coming from a remote user, which it executes on the affected computer.
It also terminates several processes related to security applications.
For additional information about this threat, see:
Vulnerability used: (MS04-007) ASN.1 Vulnerability Could Allow Code Execution, (MS03-039) Buffer Overrun In RPCSS Service Could Allow Code Execution, (MS03-049) Buffer Overrun in the Workstation Service Could Allow Code Execution
This worm has backdoor capabilities. It opens a random port, connects to the Internet Relay Chat (IRC) server azn123.bloodcrew.net, and joins the channel #bingo2 upon connection. It then listens for the following commands coming from a remote user, which it executes on the affected computer:
Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.
Terminating the Malware Program
Since this malware terminates the Windows Task Manager, it is necessary to use third party process viewers such as Process Explorer.
If the process you are looking for is not in the list displayed by Process Explorer, proceed to the succeeding solution set.
Extract the contents of the compressed (ZIP) file to a location of your choice.
Execute Process Explorer by double-clicking procexp.exe.
In the Process Explorer window, locate the process: MSWINDTC.EXE
Right-click the malware process, then click Kill Process Tree.
Close Process Explorer.
*NOTE: On computers running all Windows platforms, if the process you are looking for is not in the list displayed by Process Explorer, continue with the next solution procedure, noting additional instructions. If the malware process is in the list displayed by Process Explorer, but you are unable to terminate it, restart your computer in safe mode.
Editing the Registry
This malware modifies the computer's registry. Users affected by this malware may need to modify or delete specific registry keys or entries. For detailed information regarding registry editing, please refer to the following articles from Microsoft:
Users running other Windows versions can proceed with the succeeding solution set(s).
Running Trend Micro Antivirus
If you are currently running in safe mode, please restart your computer normally before performing the following solution.
Scan your computer with Trend Micro antivirus and delete files detected as WORM_SDBOT.DAE. To do this, Trend Micro customers must download the latest virus pattern file and scan their computer. Other Internet users can use HouseCall, the Trend Micro online virus scanner.
Download and install the following patches supplied by Microsoft: