Welcome to the Virus Encyclopedia of Panda Security.
|Effects: ||It goes memory resident and infects PE files.|
|First detected on:||June 9, 2003|
|Detection updated on:||April 24, 2010|
|Yes, using TruPrevent Technologies
Jeefo is a virus that infects PE files.
Once it is run, Jeefo goes memory resident, infecting files every now and again. Its infection strategy consists in adding its code to the original file, increasing its size by 36,352 bytes. In addition, Jeefo encrypts the original file.
Once an infected file is run, it is decrypted and disinfected.
Jeefo is difficult to recognize, as it does not show any messages or warnings that indicate it has reached the computer.