Analysis

  • max time kernel
    44s
  • max time network
    99s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 11:49

General

  • Target

    a8e1812e97ebaeba43c255bc07b85f8ba75e33280ac1802674e1741b5811d91a.exe

  • Size

    601KB

  • MD5

    6e681efc638d9c30f181e4743b47fe10

  • SHA1

    51cc7f9313497fb7043f1adea55eb05a19a9e5f2

  • SHA256

    a8e1812e97ebaeba43c255bc07b85f8ba75e33280ac1802674e1741b5811d91a

  • SHA512

    696ccf5140362844a4603b721af080acf67e59ac27c6a275980cc093112534018b90f598e983bb570d4066cf85a39b5edae0224f1a58cf05008845950c9d0e04

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAd7:xsNsmM2lBmSt2A+yTof/YrdfqkZwD4Ax

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8e1812e97ebaeba43c255bc07b85f8ba75e33280ac1802674e1741b5811d91a.exe
    "C:\Users\Admin\AppData\Local\Temp\a8e1812e97ebaeba43c255bc07b85f8ba75e33280ac1802674e1741b5811d91a.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Loads dropped DLL
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Admin\AppData\Local\Temp\n8342\s8342.exe
      "C:\Users\Admin\AppData\Local\Temp\n8342\s8342.exe" 4f606d128adb9df22da1b474zsLhvHVIfXm3EguM5ZheqvV8+j4n5O2VcmBzJJIJn3mp62iRliTXIy3HddYo3751tyYtMHI2WRUwzx8S4/1l6XcmQAtLdCNnHtTQJ7foLU7wFFzmjnyrnCKkGwPMCyntXagK+zXzQgF4JjgBkMJ1CnmR4nzLjMgmoS0NZ5E= /v "C:\Users\Admin\AppData\Local\Temp\a8e1812e97ebaeba43c255bc07b85f8ba75e33280ac1802674e1741b5811d91a.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:804

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • C:\Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • \Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • \Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • \Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • \Users\Admin\AppData\Local\Temp\n8342\s8342.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • memory/804-62-0x000007FEF4430000-0x000007FEF4E53000-memory.dmp

          Filesize

          10.1MB

        • memory/804-63-0x000007FEF3150000-0x000007FEF41E6000-memory.dmp

          Filesize

          16.6MB

        • memory/804-64-0x00000000006E6000-0x0000000000705000-memory.dmp

          Filesize

          124KB

        • memory/804-65-0x000007FEEE0C0000-0x000007FEEEF4F000-memory.dmp

          Filesize

          14.6MB

        • memory/804-66-0x000007FEF27E0000-0x000007FEF2ACA000-memory.dmp

          Filesize

          2.9MB

        • memory/804-67-0x00000000006E6000-0x0000000000705000-memory.dmp

          Filesize

          124KB

        • memory/1716-54-0x00000000765B1000-0x00000000765B3000-memory.dmp

          Filesize

          8KB