high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Protection available since | 13 January 2005 21:26:24 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Windows NT/2000/XP/2003
In Windows NT/2000/XP/2003 you will also need to edit the following registry entry for each user who ran the virus. The removal of this entry is optional in Windows 95/98/Me. 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.
Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:
HKU\[code number]\Software\Microsoft\Windows\CurrentVersion\Run\
Windowsupdate Service
C:\csrss.exe
and delete it if it exists.
Close the registry editor.
More Information
W32/Baba-B is a mass-mailing worm with a backdoor component.
W32/Baba-B sends itself as an email attachment to addresses obtained from the infected system. Emails sent by the worm take the following form.
Subject:
Mail Delivery failure - <harvested name>
Message text:
If the message will not displayed automatically,
you can check original in attached message.txt
Failed message also saved at:
www.<host>/inbox/security/read.asp?sessionid-<random number>
(check attached instructions)
+++ Attachment: No Virus found
+++ MC-Afee AntiVirus - www.mcafee.com
The worm is attached as a file with a filename of the following form:
"message txt <spaces> length <random number> bytes <spaces> mcafee.com"
A component of the worm contains backdoor functionality and may download and run further malicious code. W32/Baba-B is a mass-mailing worm with a backdoor component.
W32/Baba-B sends itself as an email attachment to addresses obtained from the infected system. Emails sent by the worm take the following form.
Subject:
Mail Delivery failure - <harvested name>
Message text:
If the message will not displayed automatically,
you can check original in attached message.txt
Failed message also saved at:
www.<host>/inbox/security/read.asp?sessionid-<random number>
(check attached instructions)
+++ Attachment: No Virus found
+++ MC-Afee AntiVirus - www.mcafee.com
The worm is attached as a file with a filename of the following form:
"message txt <spaces> length <random number> bytes <spaces> mcafee.com"
When run the worm drops files CSRSS.EXE and CSRSS.BIN in the C:\ folder. The file CSRSS.EXE is executed. The worm sets one of the following registry entry in order to run the file on system startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windowsupdate Service
C:\csrss.exe
The dropped file contains backdoor functionality and may download and run further malicious code.
W32/Baba-B attempts to harvest email addresses from files on the infected computer with filenames containing the following strings:
.ASP
.CGI
.DAT
.DBX
.DOC
.EML
.HTM
.HTML
.MBX
.MDB
.PHP
.RTF
.TBB
.TXT
.WAB
INBOX
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