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Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 06:07

General

  • Target

    eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2.exe

  • Size

    258KB

  • MD5

    0fea74f0a3678ccf16643642beebca20

  • SHA1

    fa769c0f95a3eb845e7ad27d0c30b3df35ebbb27

  • SHA256

    eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2

  • SHA512

    be729b0ea20d0ce8a9e7856fbc4ff9c6f19332ecdfcb92ff97984b20c6de5908eba9cf0772233be60e129c127c94235ae1b6b01807ce2f4ad0dce2f3038d1cad

  • SSDEEP

    6144:mQ7ZxwGr6dYgE85WuIeJ8nS3BwgGTTBuj7ON:mKetYH851Ie8nOagGTTE+N

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2596
      • C:\Users\Admin\AppData\Local\Temp\eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2.exe
        "C:\Users\Admin\AppData\Local\Temp\eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2.exe"
        2⤵
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:880
        • C:\Windows\system32\SysCheck.exe
          C:\Windows\system32\SysCheck.exe
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          PID:4936

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\System32\SysCheck.exe

      Filesize

      258KB

      MD5

      0fea74f0a3678ccf16643642beebca20

      SHA1

      fa769c0f95a3eb845e7ad27d0c30b3df35ebbb27

      SHA256

      eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2

      SHA512

      be729b0ea20d0ce8a9e7856fbc4ff9c6f19332ecdfcb92ff97984b20c6de5908eba9cf0772233be60e129c127c94235ae1b6b01807ce2f4ad0dce2f3038d1cad

    • C:\Windows\System32\SysCheck.exe

      Filesize

      258KB

      MD5

      0fea74f0a3678ccf16643642beebca20

      SHA1

      fa769c0f95a3eb845e7ad27d0c30b3df35ebbb27

      SHA256

      eb590c9f6e69bc427a43db0ac150f95fb13c13ab718d5b392ff2cc92820441f2

      SHA512

      be729b0ea20d0ce8a9e7856fbc4ff9c6f19332ecdfcb92ff97984b20c6de5908eba9cf0772233be60e129c127c94235ae1b6b01807ce2f4ad0dce2f3038d1cad

    • memory/880-137-0x0000000021050000-0x000000002109A000-memory.dmp

      Filesize

      296KB

    • memory/4936-138-0x0000000021050000-0x000000002109A000-memory.dmp

      Filesize

      296KB