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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 07:03

General

  • Target

    0f82e7f3277a2304e92d43bef14210bcb039f111c35b5672d130f7ceae80cb97.exe

  • Size

    509KB

  • MD5

    799272d844e730a754dcb56381f695d0

  • SHA1

    7bb287e07fd8cc5248a90984dfcbc46f331c3062

  • SHA256

    0f82e7f3277a2304e92d43bef14210bcb039f111c35b5672d130f7ceae80cb97

  • SHA512

    3559053d05ccb227c305d6f82cc23b22426a0338a079cdca7c5814179c2e8c04ead778f35f91d5e1ca32bedc82bd5123b7edbb83f585673d35154881a6df3bee

  • SSDEEP

    12288:jgDhdkq5BCoC5LfWSLTUQpr2Zu19Qm7zN:jgDhdkMRWfLTUO2Zu1um7zN

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 7 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0f82e7f3277a2304e92d43bef14210bcb039f111c35b5672d130f7ceae80cb97.exe
    "C:\Users\Admin\AppData\Local\Temp\0f82e7f3277a2304e92d43bef14210bcb039f111c35b5672d130f7ceae80cb97.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:996
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:276
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\blastclnnn.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1652
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\blastclnnn.exe
          3⤵
            PID:1144

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/996-54-0x00000000760E1000-0x00000000760E3000-memory.dmp

        Filesize

        8KB

      • memory/996-61-0x0000000000400000-0x00000000004A3000-memory.dmp

        Filesize

        652KB

      • memory/996-62-0x0000000000400000-0x00000000004A3000-memory.dmp

        Filesize

        652KB