Do you have ever found this worm? My uncle's computer have been effected by this worm last quite often. Usually the step that i use to solve a computer's problem that being affected by a virus or worm is just update the virus definition and they'll gone (no need to format pc). But sometimes the virus is very cleaver, just like this one. Very very cleaver... help me!!!
Why did i say this virus is cleaver? Because this virus or worm will take over your computer (that's why the virus display "Restricted by Bro Act" at all window bar or browser) such as control panel, ms-dos, system administration and all folders. I already tried to open a folder named "virus removal" in my thumbdrive, and suddenly this virus automatically close the folder, and i cannot browse my folder. I also tried to run removal tools from ms-dos command, but again, the virus can read my mind and close the ms-dos...Actually the virus didn't read my mind, it just read the folder or the application name, and if it contain word such as "removal", "anti virus", or something like that, the virus will automatically shut it down to prevent any healing action taken on the computer.
One thing that you can try... download an application called killvb.exe that will kill all application running either in background or currently running. After that you can execute any third party application that can see what application is running in the background, shutdown all strange application, and after that you can install anti virus and update it, and run full scan...good luck, i've try it once and it is successfully. :)