TROJ_BREDOLB.SML
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan deletes itself after execution.
TECHNICAL DETAILS
Installation
This Trojan is injected into the following processes running in memory:
- explorer.exe
Autostart Technique
This Trojan drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:
- %User Startup%\srvope32.exe
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}rror.ru/new/controller.php?action=bot&entity_list=&first=1&rnd={random}&uid={random}&guid={random}
It drops the following file(s)/component(s):
- %User Profile%\Application Data\avdrn.dat
(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)
It deletes itself after execution.
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
Search and delete this file
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_BREDOLB.SML. 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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