TROJ_BREDOLAB.Y
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Trojan adds the following mutexes to ensure that only one of its copies runs at any one time:
- SYSTEM_36BC735E
Other Details
This Trojan does the following:
- Upon execution, it checks the presence of the following files to know if it is being executed inside a virtual machine:
- %System%\drivers\hgfs.sys
- %System%\drivers\prleth.sys
- %System%\drivers\vmhgfs.sys
- It also performs other VMWare verification such as:
- computer name checking (if Sandbox)
- if HKEY_LOCAL_MACHINE\HARDWARE\Description\System\SystemBiosVersion value is "VBOX"
(Note: %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.)
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
Terminate a process file/s detected as TROJ_BREDOLAB.Y
*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_BREDOLAB.Y. 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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