Summary

Summary
Action
More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Included in our products from | June 2004 (3.82) |
| Protection available since | 21 April 2004 23:24:54 (GMT) |
| Detected by | All Sophos products |
Action

Summary
Action
More Information
Please read the instructions for removing W32/Netsky-Z.
More Information
W32/Netsky-Z is an internet worm which spreads by emailing itself to addresses found within files on the local computer.
The emails use a subject and message randomly selected from the following:
Subject lines:
Information
Hi
Document
Important
Message texts:
Important bill!
Important notice!
Important document!
Important data!
Important textfile!
Important details!
Important informations!
Important!
Important notice!
Attached file(Zip archive):
Bill.zip
Notice.zip
Important.zip
Data.zip
Textfile.zip
Details.zip
Part-2.zip
Informations.zip
The worm launched a denial-of-service attack on the following sites between the 2nd and the 5th May 2004:
www.educa.ch
www.medinfo.ufl.edu
www.nibis.de
W32/Netsky-Z is an internet worm which spreads by emailing itself to addresses found within files on the local computer.
When first run W32/Netsky-Z copies itself to the Windows folder as Jammer2nd.exe and creates the following registry entry so that Jammer2nd.exe is run automatically each time Windows is started:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Jammer2nd = <WINDOWS>\Jammer2nd.exe
Copies of the worm in Base64 encoded and ZIP form are created in the Windows folder with names matching pk_zip?.log where '?' is a number.
The emails use a subject and message randomly selected from the following:
Subject lines:
Information
Hi
Document
Important
Message texts:
Important bill!
Important notice!
Important document!
Important data!
Important textfile!
Important details!
Important informations!
Important!
Important notice!
Attached file(Zip archive):
Bill.zip
Notice.zip
Important.zip
Data.zip
Textfile.zip
Details.zip
Part-2.zip
Informations.zip
W32/Netsky-Z also opens a listening port on TCP 665.
The worm launched a denial-of-service attack on the following sites between the 2nd and the 5th May 2004:
www.educa.ch
www.medinfo.ufl.edu
www.nibis.de
