[virusinfo] W32/Sdbot-IK
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Thu, 13 May 2004 09:07:28 -0700
From; Sophos Alert System:
Name: W32/Sdbot-IK
Type: Win32 worm
Date: 13 May 2004
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the June 2004 (3.82) release of Sophos Anti-Virus.
Customers using Enterprise Manager, PureMessage and any of the
Sophos small business solutions will be automatically protected
at their next scheduled update.
Sophos has received several reports of this worm from the wild.
Information about W32/Sdbot-IK can be found at:
http://www.sophos.com/virusinfo/analyses/w32sdbotik.html
Description
W32/Sdbot-IK is a worm which attempts to spread to remote network shares. It
also contains backdoor Trojan functionality, allowing unauthorised remote
access to the infected computer via IRC channels while running in the
background as a service process.
W32/Sdbot-IK copies itself to the Windows system folder as WNETMGR.EXE
and as COOL.EXE and creates entries in the registry at the following
locations
so as to run itself on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft System Checkup
HKLM\Software\Microsoft\Windows\CurrentVersion\Run Services\
Microsoft System Checkup
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\NT Logging Service
W32/Sdbot-IK spreads to network shares with weak passwords as a result of
the
backdoor Trojan element receiving the appropriate command from a remote
user.
W32/Sdbot-IK attempts to clear the Security system log file.
W32/Sdbot-IK attempts to download and execute several files to the Temp
folder,
but at the time of writing none of these were available.
W32/Sdbot-IK attempts to terminate and disable various anti-virus and
security
related programs and services.
W32/Sdbot-IK also modifies the HOSTS file located at
%WINDOWS%\System32\Drivers\etc\HOSTS, mapping selected anti-virus websites
to the loopback address 127.0.0.1 in an attempt to prevent access to these
sites. Typically the following mappings will be appended to the HOSTS file:
127.0.0.1 www.symantec.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 symantec.com
127.0.0.1 www.sophos.com
127.0.0.1 sophos.com
127.0.0.1 www.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 www.viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 f-secure.com
127.0.0.1 www.f-secure.com
127.0.0.1 kaspersky.com
127.0.0.1 www.avp.com
127.0.0.1 www.kaspersky.com
127.0.0.1 avp.com
127.0.0.1 www.networkassociates.com
127.0.0.1 networkassociates.com
127.0.0.1 www.ca.com
127.0.0.1 ca.com
127.0.0.1 mast.mcafee.com
127.0.0.1 my-etrust.com
127.0.0.1 www.my-etrust.com
127.0.0.1 download.mcafee.com
127.0.0.1 dispatch.mcafee.com
127.0.0.1 secure.nai.com
127.0.0.1 nai.com
127.0.0.1 www.nai.com
127.0.0.1 update.symantec.com
127.0.0.1 updates.symantec.com
127.0.0.1 us.mcafee.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 customer.symantec.com
127.0.0.1 rads.mcafee.com
127.0.0.1 trendmicro.com
127.0.0.1 www.trendmicro.com
Recovery
Please follow the instructions for removing worms.
Replace the Hosts file from a backup or edit it in Notepad to remove the
changes that the worm has made.
Check your administrator passwords and review network security.
You will also need to edit the following registry entries, if they are
present. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The
registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry'
menu, click 'Export Registry File'. In the 'Export range' panel, click
'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft System Checkup
HKLM\Software\Microsoft\Windows\CurrentVersion\Run Services\
Microsoft System Checkup
and delete them if they exist.
Close the registry editor.
This IDE file also includes detection for:
W32/Agobot-ID
http://www.sophos.com/virusinfo/analyses/w32agobotid.html
W32/Agobot-ZG
http://www.sophos.com/virusinfo/analyses/w32agobotzg.html
WM97/MMTour-A
http://www.sophos.com/virusinfo/analyses/wm97mmtoura.html
W32/Sdbot-BL
http://www.sophos.com/virusinfo/analyses/w32sdbotbl.html
Troj/Nab-A
http://www.sophos.com/virusinfo/analyses/trojnaba.html
Troj/Bckdr-CEP
http://www.sophos.com/virusinfo/analyses/trojbckdrcep.html
W32/Francette-J
http://www.sophos.com/virusinfo/analyses/w32francettej.html
Troj/VB-HA
http://www.sophos.com/virusinfo/analyses/trojvbha.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/sdbot-ik.ide
Download all the IDE files available for the current version of
Sophos Anti-Virus in a single compressed file. The file is
available in two formats:
Zip file:
http://www.sophos.com/downloads/ide/ides.zip
Self-extracting file:
http://www.sophos.com/downloads/ide/ides.exe
Read about how to use IDE files at
http://www.sophos.com/downloads/ide/using.html
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