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General

  • Target

    2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock

  • Size

    112KB

  • Sample

    240328-mshqlagd69

  • MD5

    075a7b2ad4f8f6c5b36377ee28d16f89

  • SHA1

    29461828281a1f48162d56595a6d2ebfda128634

  • SHA256

    3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a

  • SHA512

    a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96

  • SSDEEP

    3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO

Malware Config

Targets

    • Target

      2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock

    • Size

      112KB

    • MD5

      075a7b2ad4f8f6c5b36377ee28d16f89

    • SHA1

      29461828281a1f48162d56595a6d2ebfda128634

    • SHA256

      3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a

    • SHA512

      a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96

    • SSDEEP

      3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (82) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks