Analysis

  • max time kernel
    138s
  • max time network
    155s
  • 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, 20:19

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 4 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:3892
    • 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:1676
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1380
      • 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\explorer.exe'; $s.Save()"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Drops startup file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4076

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

          7ab00d2b8ad3a0a8426f6a535086b700

          SHA1

          5b912f4345328372093354ff2ba6a932fef4a8ab

          SHA256

          cc27d1633ff5a4401c75569e6cd8f98e7ab09f01b8dfb0399f82efe197e0ca0c

          SHA512

          839e5fbdcc406cee2f37a156ccbb772a80a0231508a7925f95e162990b31ea8366442fcd6073c9035905b47a34d60a3434cc776babf9d49521663b8d3e400584

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfefalvz.igp.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1380-42-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-40-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-5-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-6-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-9-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-10-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-8-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1380-7-0x0000000000400000-0x00000000007AA000-memory.dmp

          Filesize

          3.7MB

        • memory/1676-11-0x00007FFCA5843000-0x00007FFCA5845000-memory.dmp

          Filesize

          8KB

        • memory/1676-12-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

          Filesize

          10.8MB

        • memory/1676-19-0x000001FCC3F60000-0x000001FCC3F82000-memory.dmp

          Filesize

          136KB

        • memory/1676-23-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

          Filesize

          10.8MB

        • memory/1676-35-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

          Filesize

          10.8MB

        • memory/3892-0-0x00007FFCA5843000-0x00007FFCA5845000-memory.dmp

          Filesize

          8KB

        • memory/3892-3-0x00000280C0430000-0x00000280C07A2000-memory.dmp

          Filesize

          3.4MB

        • memory/3892-2-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

          Filesize

          10.8MB

        • memory/3892-41-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

          Filesize

          10.8MB

        • memory/3892-1-0x00000280A5E60000-0x00000280A5E68000-memory.dmp

          Filesize

          32KB