The presence of an executable with random looking name in the following directories:
Program Files\Common Files\System
Program Files\Common Files\Microsoft SharedSecurity / monitoring software is terminated unexpectedly
The Windows Update service is stopped
Explorer is set not to show hidden files, even though it was set to show them previously
Please let BitDefender delete the infected files. Modified registry settings (like showing hidden files or disabling autorun) must be modified manually to their intended value.
Mihai Cimpoesu, Virus Researcher