Analysis

  • max time kernel
    92s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2023, 22:30

General

  • Target

    40407d8d73e4260d692949a296912337.exe

  • Size

    403KB

  • MD5

    40407d8d73e4260d692949a296912337

  • SHA1

    b5a5895468b343433edd0346eacd740fb7c2bcb2

  • SHA256

    22fb95adecfa503b4c542ba974b5422da6f84989c0f397237ed3abd0b88a25fb

  • SHA512

    5490b0f7c3169c5f22c71b49b211194c47404f9e0fe95efb102ad6a1448ff88ebd636eea5bf82d969dd4814f08f557da92a1b5ba98384cc30c9251f11221f4f5

  • SSDEEP

    12288:fh2plJgBGqDi2ETR5iAUrswqPoFRRkngZ3wstvo:fkyB1DiNTXiHEAFRCgqsNo

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40407d8d73e4260d692949a296912337.exe
    "C:\Users\Admin\AppData\Local\Temp\40407d8d73e4260d692949a296912337.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:224
    • C:\Users\Admin\AppData\Local\Temp\n7103\s7103.exe
      "C:\Users\Admin\AppData\Local\Temp\n7103\s7103.exe" ins.exe /h d62580.api.socdn.com /e 8030519 /u 5193805b-c284-4f85-b972-26465bc06f2f /v "C:\Users\Admin\AppData\Local\Temp\40407d8d73e4260d692949a296912337.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2112
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 2772
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2516
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 1960
      2⤵
      • Program crash
      PID:4240
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 224 -ip 224
    1⤵
      PID:3504

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\n7103\s7103.exe

      Filesize

      288KB

      MD5

      13b3e3bb0757730a2442c8149381b458

      SHA1

      a2763fbed796d85942b68135a9da3879ab013782

      SHA256

      1c2576369f51175b1a71ac298e1caa0bd47adc30cb9aee10be9b3e464919ed6c

      SHA512

      32482cf75cbee6b366318896861839a20c854eeac41ce08fa0d1c0af765ff7596f52f7c164dd99c48bd899a7eeeae7119b92c62962a8a19022498fd8316af899

    • memory/224-0-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/224-48-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2112-33-0x0000000000B20000-0x0000000000B30000-memory.dmp

      Filesize

      64KB

    • memory/2112-35-0x0000000000B20000-0x0000000000B30000-memory.dmp

      Filesize

      64KB

    • memory/2112-30-0x000000001BF50000-0x000000001C41E000-memory.dmp

      Filesize

      4.8MB

    • memory/2112-31-0x000000001C4C0000-0x000000001C55C000-memory.dmp

      Filesize

      624KB

    • memory/2112-32-0x000000001B510000-0x000000001B518000-memory.dmp

      Filesize

      32KB

    • memory/2112-13-0x0000000000B20000-0x0000000000B30000-memory.dmp

      Filesize

      64KB

    • memory/2112-34-0x0000000000B20000-0x0000000000B30000-memory.dmp

      Filesize

      64KB

    • memory/2112-27-0x000000001B0F0000-0x000000001B0FA000-memory.dmp

      Filesize

      40KB

    • memory/2112-36-0x0000000000B20000-0x0000000000B30000-memory.dmp

      Filesize

      64KB

    • memory/2112-37-0x000000001F930000-0x000000001F992000-memory.dmp

      Filesize

      392KB

    • memory/2112-38-0x000000001FC90000-0x000000001FDCC000-memory.dmp

      Filesize

      1.2MB

    • memory/2112-39-0x00000000202E0000-0x00000000207EE000-memory.dmp

      Filesize

      5.1MB

    • memory/2112-40-0x0000000020BF0000-0x0000000020CF0000-memory.dmp

      Filesize

      1024KB

    • memory/2112-47-0x00007FFDF7700000-0x00007FFDF80A1000-memory.dmp

      Filesize

      9.6MB

    • memory/2112-12-0x00007FFDF7700000-0x00007FFDF80A1000-memory.dmp

      Filesize

      9.6MB