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General

  • Target

    2024-04-22_09bf3f42a75392e9189c3c525d2d73b4_virlock

  • Size

    235KB

  • Sample

    240422-bt8smadf44

  • MD5

    09bf3f42a75392e9189c3c525d2d73b4

  • SHA1

    a7b823440b5ac4a29f4e7a879d206a5afe122392

  • SHA256

    b0060eb3e956e601273b46efb59ae907457df14bece47eb63399ce361ce80966

  • SHA512

    60e0e8e4598f32b70f21633ba6bc9eaeaa11c59b9f5bd024cea4f306c4270d003d0890a0d62e36edf41db99fac7ecb0d0ce21508da7d89f8145d96689180aa13

  • SSDEEP

    3072:ZaNQ+911lN+qSVi1gzyD5H+XVgWrjFyNPJLZCeA1q/Oo2Yisga0/Gwj93J0yiUAn:klGqHqe4SAZedMN82Y+a05j932h3VEvE

Malware Config

Targets

    • Target

      2024-04-22_09bf3f42a75392e9189c3c525d2d73b4_virlock

    • Size

      235KB

    • MD5

      09bf3f42a75392e9189c3c525d2d73b4

    • SHA1

      a7b823440b5ac4a29f4e7a879d206a5afe122392

    • SHA256

      b0060eb3e956e601273b46efb59ae907457df14bece47eb63399ce361ce80966

    • SHA512

      60e0e8e4598f32b70f21633ba6bc9eaeaa11c59b9f5bd024cea4f306c4270d003d0890a0d62e36edf41db99fac7ecb0d0ce21508da7d89f8145d96689180aa13

    • SSDEEP

      3072:ZaNQ+911lN+qSVi1gzyD5H+XVgWrjFyNPJLZCeA1q/Oo2Yisga0/Gwj93J0yiUAn:klGqHqe4SAZedMN82Y+a05j932h3VEvE

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (81) files with added filename extension

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

    • Blocklisted process makes network request

    • 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