VHD Ransomware

  • First known sample

    2020

  • Discovery

    2020

  • Current status

    Active

  • Type

    Ransomware

  • Targeted platforms

    Windows

  • TOP targeted countries

    Central Asia , France

  • Connected attacks

    Lazarus , MATA

  • Purpose/Functions

    Ransomware
  • Artefacts/Attribution

    Believed to be owned and operated by Lazarus

  • Description

    Ransomware created and operated by the prolific APT group Lazarus. It was seen being deployed against businesses in France and Asia starting in spring 2020.

    Additional information

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  1. Adding detection for known modules
  2. Collecting samples
  3. Reversing the samples
  4. Decrypting sophisticated encryption and compression schemes
  5. Understanding lateral movement
  6. Outlining multiple attack stages in the correct order
  7. Mapping C&C infrastructure
  8. Setting up sinkholes
  9. Analyzing collected traffic and communication protocols
  10. Crawling other hosts that understand the same protocol
  11. Taking down and acquiring images of C&C servers
  12. Identifying victims, sending out notifications to victims and global CERTs
  13. Applying forensic analysis and extracting logs, stolen files, other components
  14. Collecting and analyzing data from KSN, C&C servers, individual victims who are willing to work with us, sinkholes, crawlers, etc.
  15. Writing a comprehensive report
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