[virusinfo] W32/Sdbot-WS
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Mon, 04 Apr 2005 10:50:52 -0700
From; Sophos Alert System:
Name: W32/Sdbot-WS
Aliases: Trojan.SdBot-447, W32/Sdbot.worm.gen.y
Type: Win32 worm
Date: 4 April 2005
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the May 2005 (3.93) release of Sophos Anti-Virus.
Customers using EM Library, PureMessage or any of our Sophos
small business solutions will be automatically protected at
their next scheduled update.
At the time of writing, Sophos has received a small number of
reports of this worm from the wild.
Information about W32/Sdbot-WS can be found at:
http://www.sophos.com/virusinfo/analyses/w32sdbotws.html
W32/Sdbot-WS is a member of the W32/Sdbot family of network worms. The worm can
spread to weakly protected network shares, and to computers already infected
with W32/MyDoom.
In order to run automatically when Windows starts up the worm copies itself to
the <System> folder as winupdate.exe and creates the following registry
entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Windows Update
winupdate.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Windows Update
winupdate.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Windows Update
winupdate.exe
Once installed, W32/Sdbot-WS connects to a preconfigured IRC server and joins a
channel from which an attacker can issue further commands. These commands can
cause the infected computer to perform any of the following actions:
Scan for remote computers to infect
Steal product keys
Upload, download and execute files
Retrieve information about an infected system
The worm can be instructed to secure an infected computer, and does this by
attempting to delete the C$, D$, IPC$ and ADMIN$ network shares, and disable
DCOM by setting the following registry entry:
HKLM\Software\Microsoft\OLE
EnableDCOM
This IDE file also includes detection for:
Troj/Istbar-AW
http://www.sophos.com/virusinfo/analyses/trojistbaraw.html
Troj/Istbar-AX
http://www.sophos.com/virusinfo/analyses/trojistbarax.html
Troj/CWS-I
http://www.sophos.com/virusinfo/analyses/trojcwsi.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/sdbot-ws.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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