General

  • Target

    2024-10-18_ac82491c3a9052443fc87aefe9e1d0ce_virlock

  • Size

    655KB

  • Sample

    241018-htxtpatclb

  • MD5

    ac82491c3a9052443fc87aefe9e1d0ce

  • SHA1

    7cb2e3591170e674771a4259589e6e5696d73eaf

  • SHA256

    618dbb47cce209dc4856c0325a9b87e3e7107cbcd97e7670fbe14c53f5cd196d

  • SHA512

    b345b744430dd6ca56572692d061d951d3d27e268320f41ca6226c885564c29a7ae32093e1233be52abc16c2b71ef52c88f912b781f2fc0206705f0cdcae4313

  • SSDEEP

    12288:Enf6HhsuRhddbbA8fRF2/06K6NJ8XccY6h2WbOEty0KJSzEIRMeuQZPNt6vtu1iX:uf6HhxLTs8fRF2XjYaWbPynh8q

Malware Config

Targets

    • Target

      2024-10-18_ac82491c3a9052443fc87aefe9e1d0ce_virlock

    • Size

      655KB

    • MD5

      ac82491c3a9052443fc87aefe9e1d0ce

    • SHA1

      7cb2e3591170e674771a4259589e6e5696d73eaf

    • SHA256

      618dbb47cce209dc4856c0325a9b87e3e7107cbcd97e7670fbe14c53f5cd196d

    • SHA512

      b345b744430dd6ca56572692d061d951d3d27e268320f41ca6226c885564c29a7ae32093e1233be52abc16c2b71ef52c88f912b781f2fc0206705f0cdcae4313

    • SSDEEP

      12288:Enf6HhsuRhddbbA8fRF2/06K6NJ8XccY6h2WbOEty0KJSzEIRMeuQZPNt6vtu1iX:uf6HhxLTs8fRF2XjYaWbPynh8q

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (66) 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.

    • 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