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Overview

overview

6

Static

static

75ec306eec...ed.exe

windows7-x64

6

75ec306eec...ed.exe

windows10-2004-x64

6

Analysis

  • max time kernel
    154s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 06:39

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General

  • Target

    75ec306eecf7e9aee2064bdad1d9d7123b8350030957f7d7585e7a7bf08e73ed.exe

  • Size

    798KB

  • MD5

    814478968ba07bc0d64a7082dcd990a2

  • SHA1

    f05463a30bf8732223068077374d075d4f1ea047

  • SHA256

    75ec306eecf7e9aee2064bdad1d9d7123b8350030957f7d7585e7a7bf08e73ed

  • SHA512

    b0e89941306df9ee8fcb1ac7613814ab8e551b62c1a9287bb7580ffbd355df26e34da36be8b59a19b92e6e0fab1d166e40d296e060f8bc64df1cfbb4faea2683

  • SSDEEP

    24576:wuQObdrN0MQdEPWm9lawKMhRxSnr4ON5y6Le:wuQOdN0MQdIWmeMhnSnnbS

Score
6/10
bootkitpersistence

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

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

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 20 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\75ec306eecf7e9aee2064bdad1d9d7123b8350030957f7d7585e7a7bf08e73ed.exe
    "C:\Users\Admin\AppData\Local\Temp\75ec306eecf7e9aee2064bdad1d9d7123b8350030957f7d7585e7a7bf08e73ed.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2512
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:424
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:2224
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
      PID:2600
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
        PID:4480
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:4812
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
          • Modifies registry class
          PID:3476
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:3724
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:384
          • C:\Windows\explorer.exe
            explorer.exe /LOADSAVEDWINDOWS
            2⤵
            • Modifies registry class
            PID:4568
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:3212
          • C:\Windows\explorer.exe
            explorer.exe /LOADSAVEDWINDOWS
            2⤵
            • Modifies registry class
            PID:3608
        • C:\Windows\System32\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {3eef301f-b596-4c0b-bd92-013beafce793} -Embedding
          1⤵
            PID:2928
          • C:\Windows\System32\rundll32.exe
            C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
            1⤵
              PID:1988

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/2512-132-0x0000000000400000-0x0000000000B12000-memory.dmp

              Filesize

              7.1MB

              Download

            • memory/2512-134-0x00000000028F0000-0x00000000028F7000-memory.dmp

              Filesize

              28KB

              Download

            • memory/2512-135-0x0000000000400000-0x0000000000B12000-memory.dmp

              Filesize

              7.1MB

              Download

            • memory/2512-136-0x0000000000400000-0x0000000000B12000-memory.dmp

              Filesize

              7.1MB

              Download