Threat description


Category: Malware
Type: Worm
Platform: W32
Aliases: Acanze.A, Acanze


Acanze.A is simple email worm of Italian origin written in Visual Basic. Due to the coding techniques used, the worm will only work properly under Italian Windows versions.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

Upon execution, Acanze.A will create a hidden, system file named 'login.bat' into %WINDOWS% directory. It will then set a registry key:

" HKLM\Software\Microsoft\Windows\CurrentVersion\Run\msnmsgr = "C:\WINNT\login.bat"

The key allows Windows to start the bat file each time a user logs on.

Under Italian versions of Windows, additional files will be dropped, and the attributes to both file set to hidden, system.


" C:\Programmi\Windows NT\netapi.dll

The worm will then check whether a connection to an Italian site can be established. If so, it will create e-mail messages containing copy of its body and send them to recipients in Outlook's Contact list.


Detection for this malware was published on March 8th, 2005 in the following F-Secure Anti-Virus updates:

Detection Type: PC
Database: 2005-03-08_03


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