Rootkit:W32/Whistler infects the computer system's Master Boot Record (MBR) and loads additional malicious files while the system is starting up (booting).
Once detected, the F-Secure security product may either automatically disinfect the suspect file or prompt the user to select a desired action. For more information, see: Support Community article: Automatic actions for viruses also used for suspicious items.
More scanning & removal options
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 further assistance.
F-Secure products may detect the rootkit file itself using the detection names Rootkit.MBR.Whistler.A (boot image) or Rootkit.MBR.Whistler.B (boot image).
As with most rootkits, Whistler is used to help other malicious programs to silently launch themselves on an infected computer. The additional files loaded by the rootkit are stored in the raw disk sectors and are therefore not visible in the file system. These files, which are typically malware, may also be identified by detections such as Gen:Variant.Unruy.4.