WORM_AGENT.TBW
Worm:Win32/Xema.gen!A, Worm:Win32/Xema.gen!A (Microsoft); W32/Xema (McAfee); W32.Xema.A (Symantec); PAK:UPX, Trojan-Spy.Win32.Agent.qj (Kaspersky); BehavesLike.Win32.Malware (v) (Sunbelt); Win32.Worm.Agent.AI (FSecure)
Windows 2000, Windows, XP, Windows Server 2003
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm 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
121,020 bytes
EXE
No
23 Nov 2011
Arrival Details
This worm 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 worm drops the following copies of itself into the affected system:
- %System%\c_10810.nls
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It creates the following folders:
- %System%\config\Temporary Internet Files\
- %System%\config\United States\
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Dropping Routine
This worm drops the following files:
- %System%\config\software.chk
- %System%\shell64.dll
- %System%\inter32.dll
- %System%\c_19460.nls
- %System%\shlmon.exe
- %System%\config\Temporary Internet Files\303030303030.iau
- %System%\cx_17909.nls
- %System%\c_20462.nls
- %System%\inetsrv.exe
- %User Startup%\officexp.exe
- %System%\msregsv.exe
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %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 worm connects to the following possibly malicious URL:
- http://www.{BLOCKED}x.ru
- http://info.{BLOCKED}xp.com/cgi-bin/Owpq4.cgi
- http://info.{BLOCKED}xp.com/httpdocs/mm/brian-d3a1ff858:303030303030/Cmwhite
- http://info.{BLOCKED}xp.com/cgi-bin/Clnpp5.cgi
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Search and delete these folders
- %System%\config\Temporary Internet Files\
- %System%\config\United States\
Step 3
Search and delete these components
- %System%\config\software.chk
- %System%\shell64.dll
- %System%\inter32.dll
- %System%\c_19460.nls
- %System%\shlmon.exe
- %System%\config\Temporary Internet Files\303030303030.iau
- %System%\cx_17909.nls
- %System%\c_20462.nls
- %System%\inetsrv.exe
- %User Startup%\officexp.exe
- %System%\msregsv.exe
Step 4
Scan your computer with your Trend Micro product to delete files detected as WORM_AGENT.TBW. 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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