Threat Description

Virus: W32/Induc.A


Category: Malware
Type: Virus
Platform: W32
Aliases: Win32.induc.a, Win32.induc, Induc, Virus.Win32.Induc


A malicious program that secretly integrates itself into program or data files. It spreads by integrating itself into more files each time the host program is run.


Automatic action

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

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

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

Virus:W32/Induc.A is a malware that targets Delphi program in the system. It displaces Delphi's original installation folder with %Delphi_Installation_Folder%\Lib\SysConst.pas, and adds malicious code here. Whenever a Delphi program is compiled, the malware's code will be executed to ensure that Delphi remains infected.

Installation process/actions
  • The malware searches for Delphi installation folder by checking for registry HKLM\Software\Borland\Delphi.
  • Once found, it copies %Delphi_Installation_Folder%\Source Rtl\Sys\SysConst.pas to %Delphi_Installation_Folder%\Lib\SysConst.pas.Â
  • It then adds malicious codes to %Delphi_Installation_Folder%\Lib\SysConst.pas, and one of the Delphi library file lib\SysConst.dcu will be renamed to lib\SysConst.bak.
  • The malware compiles the infected SysConst.pas to make a new SysConst.dcu. Therefore, from this point on, the Virus:W32/Induc.A code will be inserted whenever a Delphi program is compiled using the newÂSysConst.dcu.
  • Once done, the malware deletes %Delphi_Installation_Folder%\Lib\SysConst.pas.
  • The malware does not do anything else if no Delphi is installed in the infected system.
  • The malware has no other threats except self replicating

Description Created: 2010-03-16 03:43:09.0

Description Last Modified: 2010-05-27 11:53:40.0


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