The Dell Sonicwall Threat Research team has received reports of yet another ransomware called Petya. Over the past year, Ransomware has proven to be an inceasingly lucrative business for cybercriminals and has become very widespread that victims have resorted to paying to get their data back. Petya is no different, but instead of just encrypting files it overwrites the system's master boot record (MBR) effectively locking the victim out and rendering the machine unusable unless payment is made. Infection Cycle: Upon execution, Petya replaces the boot drive's MBR with a malicious loader which will cause Windows to crash. On reboot, it will display a fake CHKDSK screen. The victim is then greeted with a flashing skull. After pressing any key, the instructions on how to pay to get their data back is then displayed. At this point, the victim is locked out of their machine and renders it useless. Rebooting into safe mode is also not possible. V...
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