TROJ_VESLORN.AW
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan connects to a website to send and receive information.
TECHNICAL DETAILS
24,414 bytes
EXE
Yes
26 Jan 2008
Compromises system security
Installation
This Trojan drops the following copies of itself into the affected system:
- %System%\Down(0).exe
(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.)
Autostart Technique
This Trojan registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\svcname
ImagePath = %System%\Down(0).exe
Backdoor Routine
This Trojan connects to the following websites to send and receive information:
- {BLOCKED}.{BLOCKED}.149.46
As of this writing, the said sites are inaccessible.
SOLUTION
8.900
05.634.06
03 Nov 2008
11/3/2008 12:00:00 AM
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
Identify and terminate files detected as TROJ_VESLORN.AW
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
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.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
- svcname
- svcname
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_VESLORN.AW. 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.
Did this description help? Tell us how we did.