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General

  • Target

    2024-04-16_f003a9f94356657b3b1023a0edc407b0_virlock

  • Size

    585KB

  • Sample

    240416-lpzz2aef87

  • MD5

    f003a9f94356657b3b1023a0edc407b0

  • SHA1

    aa8dca5fe73d8a15dce62b561903c0e3993a96f7

  • SHA256

    6f6baa0c585ad994924a6d142cdd7bdaa4c728b51d0f1ca8a333e40b1102f400

  • SHA512

    e97a59a2b34297c7336e30714cd53877434072e7022dfd6c8ec9c7a4e2592a6a833c717de2801969d8c54a5bcf32f2d0dc4b3b4bf6bcca8bf41198b5b420bb32

  • SSDEEP

    12288:/6YfGofmSbK6zs5JDkfX+2xcXC++IIUfnfzNmqveI:/aofmSbKo6YfXTcXD+IIUHnve

Malware Config

Targets

    • Target

      2024-04-16_f003a9f94356657b3b1023a0edc407b0_virlock

    • Size

      585KB

    • MD5

      f003a9f94356657b3b1023a0edc407b0

    • SHA1

      aa8dca5fe73d8a15dce62b561903c0e3993a96f7

    • SHA256

      6f6baa0c585ad994924a6d142cdd7bdaa4c728b51d0f1ca8a333e40b1102f400

    • SHA512

      e97a59a2b34297c7336e30714cd53877434072e7022dfd6c8ec9c7a4e2592a6a833c717de2801969d8c54a5bcf32f2d0dc4b3b4bf6bcca8bf41198b5b420bb32

    • SSDEEP

      12288:/6YfGofmSbK6zs5JDkfX+2xcXC++IIUfnfzNmqveI:/aofmSbKo6YfXTcXD+IIUHnve

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (85) 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