Rogue:W32/DotTorrent.A identifies a trojan which displays fake messages indicating an "Antipiracy foundation scanner" has discovered torrent files on the computer violating the copyright of the file's respective owners. This is an attempt to frighten the user into paying money to a (fictional) organization, ICPP, supposedly to pay for the copyright violation fine and for a 'legal license purchase'.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
The trojan's extortion scheme qualifies this malicious program as a type of ransomware.
DotTorrent's activities are more thoroughly discussed in the following F-Secure Labs blogpost:
On execution, the trojan displays a message box that purports to be a 'copyright violation alert':
The user is then directed to a website where payment may be made for the alleged violation.