Symantec_Beta : Backdoor.Trojan
Windows 2000, Windows XP, Windows Server 2003
This backdoor is capable of executing the several commands.
This backdoor may be dropped by other malware.
It connects to a website to send and receive information.
This backdoor may be dropped by the following malware:
This backdoor injects itself into the following processes running in the affected system's memory:
This backdoor drops the following files:
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
Other System Modifications
This backdoor modifies the following registry entries:
Start = 2
(Note: The default value data of the said registry entry is 3.)
This backdoor opens the following ports:
It connects to the following websites to send and receive information:
It replaces the following legitimate files with its own AUTORUN component file:
As a result, the malware is executed whenever the system executes the overwritten DLLs. Trend Micro also detects the autorun component file as BKDR_SHARK.WMP.
It is capable of executing the following commands:
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.
Remove malware files dropped/downloaded by BKDR_SHARK.WMP
Restore this modified registry value
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.
Search and delete these files
Scan your computer with your Trend Micro product to delete files detected as BKDR_SHARK.WMP. 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.
Restore a file/s that has/have been corrupted/modified by this malware/grayware
To restore system files:
• For Windows 2000:
(Note: In the example above, D: refers to the CD-ROM drive. If your CD-ROM drive is not D:, please change the letter accordingly. Also, the file to restore is C:\WINNT\System32\explorer.exe.)
• For Windows XP and Windows Server 2003: