Analysis

  • max time kernel
    128s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 19:58

General

  • Target

    file.exe

  • Size

    3.8MB

  • MD5

    f5d31bef57f4d69af9f1b44a6f8f8d5e

  • SHA1

    2ffa0bb9f123f6e8cda8ef398d33c1c71a01961e

  • SHA256

    88dbbdcc10e16ae14103f8a0cbcd2d692668fc78efcc36a406880ff1e6b5fac0

  • SHA512

    c07729ab676d6db44b0176fd64d0ec79936bbdba2f2526f7b2f24e4e407e8100372329195018d661e2d79536cd02b9046acf739cebee0607aacbfa3331d9395a

  • SSDEEP

    49152:oyXV/ctnAqeOjKiPPDWw9OmzBo4H0yr+334/PYWsRtQ4vEphxd+ykCSMpt4xYhp0:rcO2RPP8mlH0yr+0W/5vEpnYmuxY7HET

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Windows security modification 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1660
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\file.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1764
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3956
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "$ws = New-Object -ComObject WScript.Shell; $s = $ws.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Nexus.lnk'); $s.TargetPath = 'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe'; $s.Save()"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Drops startup file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:372

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          d85ba6ff808d9e5444a4b369f5bc2730

          SHA1

          31aa9d96590fff6981b315e0b391b575e4c0804a

          SHA256

          84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

          SHA512

          8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          1KB

          MD5

          6c4805e00673bef922d51b1a7137028f

          SHA1

          0eabb38482d1733dd85a2af9c5342c2cafcd41eb

          SHA256

          7af7d25fe7e3bb8b75bcffaa8573e2e9af7e7f70a840fa8bc0196d0ab396ecdd

          SHA512

          eb6dacb4e0da6f45028ebf65ebffdc6aecdb6a34a582bb69aa5836ef02a7115f6b500ef2dd6a2c2be994ec9d0cbbff564368724593666105d3d4475441830cc1

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mtm314ka.xx5.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1660-37-0x000001EDB91F0000-0x000001EDB935A000-memory.dmp

          Filesize

          1.4MB

        • memory/1660-42-0x00007FFED1090000-0x00007FFED1B51000-memory.dmp

          Filesize

          10.8MB

        • memory/1660-0-0x00007FFED1093000-0x00007FFED1095000-memory.dmp

          Filesize

          8KB

        • memory/1660-3-0x000001EDB8D00000-0x000001EDB9072000-memory.dmp

          Filesize

          3.4MB

        • memory/1660-2-0x00007FFED1090000-0x00007FFED1B51000-memory.dmp

          Filesize

          10.8MB

        • memory/1660-1-0x000001ED9E630000-0x000001ED9E638000-memory.dmp

          Filesize

          32KB

        • memory/1764-11-0x00007FFED1093000-0x00007FFED1095000-memory.dmp

          Filesize

          8KB

        • memory/1764-36-0x00007FFED1090000-0x00007FFED1B51000-memory.dmp

          Filesize

          10.8MB

        • memory/1764-35-0x0000029A9CE70000-0x0000029A9CFDA000-memory.dmp

          Filesize

          1.4MB

        • memory/1764-12-0x00007FFED1090000-0x00007FFED1B51000-memory.dmp

          Filesize

          10.8MB

        • memory/1764-13-0x00007FFED1090000-0x00007FFED1B51000-memory.dmp

          Filesize

          10.8MB

        • memory/1764-14-0x0000029A9CCF0000-0x0000029A9CD12000-memory.dmp

          Filesize

          136KB

        • memory/3956-9-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-4-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-7-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-8-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-10-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-6-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-43-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/3956-44-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB