Hidrag is a non-dangerous memory resident parasitic Win32 virus. The virus infects Win32 PE EXE files. While infecting the virus encrypts a block of victim files.
When the Hidrag virus runs it creates a copy of itself that is about 36K in size and places it in the Windows directory using the name svchost.exe. Next Hidrag registers this file in the system registry auto-run key:
HKLMSoftwareMicrosoftWindowsCurrentVersionRunServices PowerManager = %WindowsDir%SVCHOST.EXE
Hidrag then stays in Windows memory as an active process, searches for EXE files on all drives – starting with the C: drive – and infects them.
The virus does not manifest itself in any way.
The virus contains the following encrypted text strings:
Hidden Dragon virus. Born in a tropical swamp. PowerManagerMutant