Analysis

  • max time kernel
    3s
  • 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 12:19

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:1192
    • 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:5184
      • 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:6064
    • 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:5440
      • 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:4888
    • 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:124
    • 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:5500
    • 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:5644
    • 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:2824
    • 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:4632
    • 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:4128
    • 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:2576
    • 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:3668
    • 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:2432
    • 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:4016
    • 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:3520
    • 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:2036
    • 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:2344
    • 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:3664
    • 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:5536
    • 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:4904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xu4gpbci.wsi.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1192-0-0x00007FFB305F3000-0x00007FFB305F5000-memory.dmp

    Filesize

    8KB

  • memory/1192-9-0x0000021225880000-0x00000212258A2000-memory.dmp

    Filesize

    136KB

  • memory/1192-10-0x00007FFB305F0000-0x00007FFB310B2000-memory.dmp

    Filesize

    10.8MB

  • memory/1192-11-0x00007FFB305F0000-0x00007FFB310B2000-memory.dmp

    Filesize

    10.8MB

  • memory/1192-12-0x00007FFB305F0000-0x00007FFB310B2000-memory.dmp

    Filesize

    10.8MB

  • memory/1192-15-0x00007FFB305F0000-0x00007FFB310B2000-memory.dmp

    Filesize

    10.8MB