Analysis

  • max time kernel
    42s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04-10-2024 12:15

General

  • Target

    main.ps1

  • Size

    1KB

  • MD5

    cc9f77cd4564117b8eadfb88d0cec5c6

  • SHA1

    0802d1b393825b8136eb51ba09b9de376e8b65f6

  • SHA256

    8f4a12b3f2d2669fc50c29397093ba9c0eb73ddf5ac386257f860c6df03738d2

  • SHA512

    109727a730c956636e5a1ba28bb02d3e27a2e69a625dc378f40ab573bfcb6d7a6b87c9303f49cc2d9559b7cfd15038d55f191adf64d2ef4bd739dcb47ac7e6e1

Malware Config

Signatures

  • Possible privilege escalation attempt 18 IoCs
  • Modifies file permissions 1 TTPs 18 IoCs
  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\main.ps1
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Command and Scripting Interpreter: PowerShell
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3604
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c takeown /F C:\Windows\System32\fr-FR\fms.dll.mui
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4328
      • C:\Windows\system32\takeown.exe
        takeown /F C:\Windows\System32\fr-FR\fms.dll.mui
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:4204
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c icacls C:\Windows\System32\fr-FR\fms.dll.mui /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4256
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32\fr-FR\fms.dll.mui /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:2620
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\explorer.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4888
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\explorer.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:3804
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\System32\taskmgr.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:2508
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\System32\taskmgr.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4704
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\System32\cmd.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4676
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\System32\cmd.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4632
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\regedit.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4316
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\regedit.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:688
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\notepad.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4644
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\notepad.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4700
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\System32\control.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:3492
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\System32\control.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4768
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\System32\msconfig.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4708
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\System32\msconfig.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:4420
    • C:\Windows\system32\takeown.exe
      "C:\Windows\system32\takeown.exe" /f C:\Windows\System32\regedt32.exe /a /r /d y
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:1372
    • C:\Windows\system32\icacls.exe
      "C:\Windows\system32\icacls.exe" C:\Windows\System32\regedt32.exe /grant administrators:F /t
      2⤵
      • Possible privilege escalation attempt
      • Modifies file permissions
      PID:3140
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_myalokge.1oo.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/3604-0-0x00007FFAEF653000-0x00007FFAEF655000-memory.dmp

      Filesize

      8KB

    • memory/3604-9-0x000002357A3D0000-0x000002357A3F2000-memory.dmp

      Filesize

      136KB

    • memory/3604-10-0x00007FFAEF650000-0x00007FFAF0112000-memory.dmp

      Filesize

      10.8MB

    • memory/3604-11-0x00007FFAEF650000-0x00007FFAF0112000-memory.dmp

      Filesize

      10.8MB

    • memory/3604-12-0x00007FFAEF650000-0x00007FFAF0112000-memory.dmp

      Filesize

      10.8MB

    • memory/3604-15-0x00007FFAEF650000-0x00007FFAF0112000-memory.dmp

      Filesize

      10.8MB