mbr

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mbr

Abbreviation for:
major breakpoint region (see there)
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John Miller, senior manager, Analysis, FireEye, said, "Petya belongs to the ransomware family that is atypical in that the malware does not encrypt individual files on victims' systems, but instead overwrites the master boot record (MBR) and encrypts the master file table (MFT), which renders the system inoperable until the ransom has been paid.
Once executed, Petya overwrites a machine's master boot record with a custom boot loader that begins the process of encrypting a system's files on reboot.
Activating on 15 August, Shamoon (also known as 'Disttrack') set about wiping parts of the master boot record (MBR) on the hard drive of any Windows system it could reach, a technique designed to cause chaos on target networks.
Late in 2010 a version of the TDSS rootkit exploit known as TDL4 or Alureon - and sometimes referred to as a "bootkit" - was developed which could manifest as an infection in the master boot record of an infected PC by using kernal-level code.
Eset, a global provider of security solutions for enterprises and consumers, has sent out a warning that a new worm that overwrites the master boot record (MBR) on all available drives is targeting computers worldwide.
"Once a vulnerable device has been targeted, Petya appears to impair the Master Boot Record (MBR) during the infection cycle.
Some known malware programs store the bootkit code inside the Master Boot Record (MBR) of the hard disk drive.
Instead, it reboots victims' computers and encrypts the hard drive's Master File Table (MFT) and renders the Master Boot Record (MBR) inoperable, restricting access to the full system by seizing information about file names, sizes, and location on the physical disk," he says.
Norton AntiVirus lets you scan anything--files, drives, memory, master boot records, for example-at any time.
McAfee Labs also saw continued increases in the number and complexity of targeted threats, including information-gathering Trojans and threats targeting systems' master boot records (MBRs).

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