Analysis

  • max time kernel
    275s
  • max time network
    339s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 13:40

General

  • Target

    dcfcd7f1c554b35e74bcd2315b041e165f5df86a406a9b50061f12f2d4ec6240.exe

  • Size

    601KB

  • MD5

    a6a0c77e3192e4384f1f1bcb0d5ec6a7

  • SHA1

    5b34f12bacb2669eb9fe4cd016b28ae402a32e80

  • SHA256

    dcfcd7f1c554b35e74bcd2315b041e165f5df86a406a9b50061f12f2d4ec6240

  • SHA512

    4a0916e2c0dfee8ea84d6a14500f88dbf916b4bf3ffa64def8f0d7d7e336c149e48e1d1234054c503e52b5479f2a8de5994706bfdf0a72977dbda166d5c9156f

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAdT: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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dcfcd7f1c554b35e74bcd2315b041e165f5df86a406a9b50061f12f2d4ec6240.exe
    "C:\Users\Admin\AppData\Local\Temp\dcfcd7f1c554b35e74bcd2315b041e165f5df86a406a9b50061f12f2d4ec6240.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3656
    • C:\Users\Admin\AppData\Local\Temp\n121\s121.exe
      "C:\Users\Admin\AppData\Local\Temp\n121\s121.exe" 72decb56571ad0db1d61b56bLTXwnIIVU1H/2PIIzejBlhC6w8sb1Ow6345Mt5catFrU4FL0wwfSccPF+FzUZDiwau+EfYYTDZ1W63eVtGT8e1pvBaDb4LLjmlk+Yz31nFENTqu1wGkU7bfsCv+4H+rgKJEBh0Q6EMoqYQ6LO3qHUfjBvnjad+5dTWbH0YI= /v "C:\Users\Admin\AppData\Local\Temp\dcfcd7f1c554b35e74bcd2315b041e165f5df86a406a9b50061f12f2d4ec6240.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4820

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\n121\s121.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

        • C:\Users\Admin\AppData\Local\Temp\n121\s121.exe

          Filesize

          349KB

          MD5

          f42490846128abad3a6504a02c9ef12c

          SHA1

          017da52f785d1385ee7fd9a5bcb2550096166385

          SHA256

          19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

          SHA512

          983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321