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Induc-A
Type Resident parasitic
Creator  ?
Date Discovered 1998
Place Isolated  ?
Date Isolated 2002
Source Language Delphi
Platform Windows
Infection Length
Reported costs

W32/Induc.A is a Windows Virus, programmed to infect Delphi.

Behavior

This virus spreads by infecting the systems running the Delphi development environment. When the virus code is executed it will first check if Delphi (version 4 through 7) is installed on the computer by trying to open the following registry key:

KKLM\SOFTWARE\Borland\Delphi\

If found, it will get the Delphi installation folder from the same registry key. Next it will copy

%Delphi_Installation_Folder%\Source\Rtl\Sys\SysConst.pas

to

%Delphi_Installation_Folder%\Lib\SysConst.pas

and add its malicious code in the implementation section of this copy. This file will be then compiled, resulting an infected sysconst.dcu (Delphi compiled unit) but not before making a copy of the once clean sysconst.dcu file under sysconst.bak. Then the copy of sysconst.pas will be deleted. As sysconst is included in each software compiled in Delphi, every program compiled with an infected Delphi will have the virus code embedded. The malware does nothing if Delphi is not installed.

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