TROJ_CARBERP.B
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan connects to certain URLs. It may do this to remotely inform a malicious user of its installation. It may also do this to download possibly malicious files onto the computer, which puts the computer at a greater risk of infection by other threats.
TECHNICAL DETAILS
72,704 bytes
EXE
Yes
02 Oct 2010
Installation
This Trojan adds the following processes:
- %windows%\explorer.exe
- %system%\svchost.exe
Autostart Technique
This Trojan drops the following files:
- %user startup%\chkntfs.exe - copy of itself
- %Application Data%\chkntfs.dat - non-malicious component
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)
Download Routine
This Trojan connects to the following malicious URLs:
- http://{BLOCKED}t.{BLOCKED}ts.com/cfg/miniav.plug
- http:/{BLOCKED}t.{BLOCKED}ts.com/cfg/ebnkusod
- http://{BLOCKED}t.{BLOCKED}ts.com/cfg/passw.plug
- http://{BLOCKED}t.{BLOCKED}ts.com/cfg/stopav.plug
SOLUTION
8.900
07.508.02
02 Oct 2010
10/2/2010 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
Search and delete this file
- %Application Data%\chkntfs.dat
Step 3
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_CARBERP.B. 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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