W32/Vanebot-R

Category: Viruses and Spyware Protection available since:04 Oct 2006 00:00:00 (GMT)
Type: Win32 worm Last Updated:04 Oct 2006 00:00:00 (GMT)
Prevalence: Small Number of Reports

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W32/Vanebot-R is a worm for the Windows platform. W32/Vanebot-R also contains IRC backdoor Trojan functionality which allows a remote intruder to gain access and control over the computer.

W32/Vanebot-R spreads
to computers vulnerable to common exploits, including SRVSVC (MS06-040)
to MSSQL servers protected by weak passwords
to network shares
via MSN Messenger
via Yahoo Instant Messenger

W32/Vanebot-R may spread with the filename redworld.exe, redworld2.exe or <random numbers>_redworld2.exe.

When first run W32/Vanebot-R copies itself to <Windows system folder>\dllcache\mssecure32.exe.

The file mssecure32.exe is registered as a new system driver service named "Microsoft Security Login Service", with a display name of "Microsoft Security Login Service" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Security Login Service\

W32/Vanebot-R sets the following registry entries, disabling the automatic
startup of other software:

HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4

Note: disabling autostart for the SharedAccess service deactivates the Microsoft Internet Connection Firewall (ICF).

Registry entries are set as follows:

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
lmcompatibilitylevel
1

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

W32/Vanebot-R attempts to terminate a number of processes related to security and anti-virus applications.