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General

  • Target

    2024-10-12_b5ac65d60abc7e3755baabd4c52a84bf_virlock

  • Size

    641KB

  • Sample

    241012-s6ylvsxhqb

  • MD5

    b5ac65d60abc7e3755baabd4c52a84bf

  • SHA1

    5b1f017fba9cb80c81bcff120839e75a7ca417f8

  • SHA256

    f2114157b16b68106d40ada18be13b03dd443419637e39f0917229457e6b7369

  • SHA512

    5f02fef6d6f7dd20178c54b8c838e21dea62d0ce4c6bdbacc31518b20f0cb76c4fe9c232e83cfd65361e5800b3912ef655a357911b0bc0911f96ec076d2900d6

  • SSDEEP

    12288:0coFOJwPXuXncHAhiFyrXDbvJoM6CmIYdGylDClKE8wr/ftyz/0EPdsC:0cWEZh1bvJoP8YHDClxRbFyz8EPdh

Malware Config

Targets

    • Target

      2024-10-12_b5ac65d60abc7e3755baabd4c52a84bf_virlock

    • Size

      641KB

    • MD5

      b5ac65d60abc7e3755baabd4c52a84bf

    • SHA1

      5b1f017fba9cb80c81bcff120839e75a7ca417f8

    • SHA256

      f2114157b16b68106d40ada18be13b03dd443419637e39f0917229457e6b7369

    • SHA512

      5f02fef6d6f7dd20178c54b8c838e21dea62d0ce4c6bdbacc31518b20f0cb76c4fe9c232e83cfd65361e5800b3912ef655a357911b0bc0911f96ec076d2900d6

    • SSDEEP

      12288:0coFOJwPXuXncHAhiFyrXDbvJoM6CmIYdGylDClKE8wr/ftyz/0EPdsC:0cWEZh1bvJoP8YHDClxRbFyz8EPdh

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (57) 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks