[1][2] Western researchers came to believe it is probably the same thing as the Duqu virus, part of the Stuxnet attack on Iran.
The Stars virus was studied in a laboratory in Iran – that means major vendors of antivirus software did not have access to samples and therefore they could not assess any potential relation to Duqu or Stuxnet.
It is said to inflict minor damage in the initial stage and might be mistaken for executable files of governmental organizations.
[1][2] This is the second attack claimed by Iran after the Stuxnet computer worm discovered in July 2010, which targeted industrial software and equipment.
It turned out to be an image taken by the Hubble telescope showing a cluster of stars, the aftermath of two galaxies colliding.