Home Malware Programs Worms BOO/Whistler.A

BOO/Whistler.A

Posted: October 31, 2011

Threat Metric

Ranking: 16,733
Threat Level: 5/10
Infected PCs: 21
First Seen: October 31, 2011
Last Seen: August 27, 2023
OS(es) Affected: Windows

Although some sources categorize BOO/Whistler.A as a worm, BOO/Whistler.A is a Master Boot Record (or MBR) virus that attacks your computer's ability to recognize and maintain its drives and boot records. BOO/Whistler.A is able to attack most versions of Windows, although SpywareRemove.com malware experts haven't seen evidence that BOO/Whistler.A is able to infect non-Windows operating systems. Attacks from BOO/Whistler.A have been known to result in loss of access to corresponding drives, files and folders. However, BOO/Whistler.A infections also have the possibility of being reconfigured for different attacks, and may reduce your network security, attempt to steal personal information or blockade your access to useful software. Because BOO/Whistler.A infects sensitive components of your PC, SpywareRemove.com malware analysts strongly recommend getting help from an anti-malware program, instead of trying to delete BOO/Whistler.A without assistance.

BOO/Whistler.A - A Spooky Windows Startup Surprise

Like other viruses, BOO/Whistler.A infects innocent files to spread itself to new computers, and may not appear to be a threat to your PC the first time you encounter BOO/Whistler.A. BOO/Whistler.A may be installed by dropper Trojans, malicious website scripts or fake system-scanning utilities. Because BOO/Whistler.A was first widely-identified in July of 2011, your PC security software might not be able to detect a BOO/Whistler.A infection if it's using databases that are older than that date.

Once BOO/Whistler.A is installed on your PC, SpywareRemove.com malware researchers have found that BOO/Whistler.A will infect at least one drive's boot sector and may even attempt to infect multiple drives. This can cause a number of problems, including:

  • Causing a range of error messages to appear when you try to load the drive or repair it with an appropriate system-repair utility. Examples include:

    'Missing operating system'

    'Unknown boot sector'

    'Error loading operating system'

    'Invalid partition table'

    'Cannot find boot media'

  • Your PC may fail to recognize drives that are attacked by BOO/Whistler.A. This can cause you to be denied access to any files or folders that are stored on that drive and may cause Windows to become inaccessible
  • .

  • Because BOO/Whistler.A loads during the system boot process, you may experience system instability and other problems that are caused by BOO/Whistler.A's constant and automatic usage of RAM and other types of system resources.

Sanctifying Your PC from BOO/Whistler.A's Unsavory Infection

As frightening as BOO/Whistler.A's attacks can be, SpywareRemove.com malware research team is glad to note that BOO/Whistler.A will not cause permanent harm to your PC under most circumstances. However, removing BOO/Whistler.A in an improper fashion can damage Windows, and it's always recommended that you remove BOO/Whistler.A and similar forms of viruses with an appropriate anti-malware program.

You may also need to reinstall the Master Boot Record, which can be performed in several ways such as via the Recovery Console or Command Prompt (depending on your version of Windows). BOO/Whistler.A is capable to onslaught most versions of Windows, including XP, Vista, and Windows 7, and should be considered an active PC threat to be defended against with vigilance.

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