The 'Trojan.Pif.Deltree' is a trojan in format of a PIF file. Being run under Windows this file will execute DELTREE.EXE file with '/Y *.*' command line which will result in deleting of all directories (except shared ones) on hard drive within seconds. The trojan will only work if Windows is installed to C:\Windows\ directory. Doesn't work under Windows NT and 3.xx.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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