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Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01/03/2025, 14:25

General

  • Target

    BootstrapperNeww.exe

  • Size

    2.9MB

  • MD5

    1b1b8584e5ef883aaa5be59076087d6b

  • SHA1

    e2067cedc5a022487fdcd4f7407b75202d6b0eb1

  • SHA256

    c0361ce0281736d7c36d465ba67683cc16d70335186bd179cedc8f0383760ae4

  • SHA512

    73a951370df807595ddb61ab81aa7e5d7407fca5dba08f40e209d48e1bc2e4e4960439fa61bdf8a2967cde1865460c1df025fff6124607f6eb0752f35e382d45

  • SSDEEP

    49152:IlcyXfHnaBTof9ePCjkIAm1skqXfd+/9A9ByClY1v/a/ehH7pNLLn2tM:CZXfHaFoCIvqkqXf0FglY1XOe97vLnh

Malware Config

Extracted

Family

xworm

C2

casino-offline.gl.at.ply.gg:34999

Attributes
  • Install_directory

    %AppData%

  • install_file

    NVIDIA app.exe

Signatures

  • Detect Xworm Payload 3 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 32 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\BootstrapperNeww.exe
    "C:\Users\Admin\AppData\Local\Temp\BootstrapperNeww.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe
      "C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
      2⤵
      • Executes dropped EXE
      PID:2360
    • C:\Users\Admin\AppData\Local\Temp\loader.exe
      "C:\Users\Admin\AppData\Local\Temp\loader.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2508
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\loader.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2736
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loader.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2272
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\NVIDIA app.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2656
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NVIDIA app.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:672
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "NVIDIA app" /tr "C:\Users\Admin\AppData\Roaming\NVIDIA app.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1304
      • C:\Windows\system32\shutdown.exe
        shutdown.exe -L
        3⤵
          PID:2152
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {3D363E00-E38A-4375-90CA-B24518E21023} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
      1⤵
        PID:2300
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x0
        1⤵
          PID:2124
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x468
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2308
        • C:\Windows\system32\csrss.exe
          %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
          1⤵
          • System Location Discovery: System Language Discovery
          • Enumerates system info in registry
          • Suspicious use of WriteProcessMemory
          PID:2088
        • C:\Windows\system32\winlogon.exe
          winlogon.exe
          1⤵
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:2852
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x0
            2⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2856

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

          Filesize

          7KB

          MD5

          5c4363ccddba1c4a2dd06fa99debe8ec

          SHA1

          2cd0f7639e4bd38af6cf22f7648a037accc7d100

          SHA256

          d8dde507d8b77232a70f8461f683a0665673b6a838a82f3db2d557b8621f0ccf

          SHA512

          4ec1511e1b993005bd2c3c01f666d378f4c51e379358bbb697f11ea9c779d0253ef3393845a10f5876a50aacbac11e9f741b6213d5b37cf5a8d2dc348ea3a12d

        • \Users\Admin\AppData\Local\Temp\BootstrapperNew.exe

          Filesize

          2.9MB

          MD5

          f227cdfd423b3cc03bb69c49babf4da3

          SHA1

          3db5a97d9b0f2545e7ba97026af6c28512200441

          SHA256

          cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

          SHA512

          b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

        • \Users\Admin\AppData\Local\Temp\loader.exe

          Filesize

          67KB

          MD5

          de7e058ade5e6ebe2cce6b2fd10d4bae

          SHA1

          0196abbe9f3fc7db4ad524d29119f7ee9beb37db

          SHA256

          271c6a42cc3f42923496857ea6adf8407f73fda81faa2586fb0fe5f6901e6d5a

          SHA512

          3fb799fca20dfb6a2871b507bec70587c555882ab7b3af6bbca855f90b66f5172a22d5dda0f2baa9e67781b9277d30e04d9dccfddc8dea095ab75b4898d921cd

        • memory/2272-41-0x0000000002290000-0x0000000002298000-memory.dmp

          Filesize

          32KB

        • memory/2272-40-0x000000001B560000-0x000000001B842000-memory.dmp

          Filesize

          2.9MB

        • memory/2360-15-0x0000000000B50000-0x0000000000B5A000-memory.dmp

          Filesize

          40KB

        • memory/2360-27-0x0000000002770000-0x0000000002778000-memory.dmp

          Filesize

          32KB

        • memory/2360-20-0x000000001E1E0000-0x000000001E2E0000-memory.dmp

          Filesize

          1024KB

        • memory/2360-21-0x0000000002670000-0x000000000267A000-memory.dmp

          Filesize

          40KB

        • memory/2360-23-0x0000000002740000-0x0000000002748000-memory.dmp

          Filesize

          32KB

        • memory/2360-25-0x0000000002680000-0x000000000268A000-memory.dmp

          Filesize

          40KB

        • memory/2360-24-0x0000000002750000-0x0000000002766000-memory.dmp

          Filesize

          88KB

        • memory/2360-22-0x0000000002710000-0x0000000002736000-memory.dmp

          Filesize

          152KB

        • memory/2360-26-0x0000000002660000-0x000000000266A000-memory.dmp

          Filesize

          40KB

        • memory/2360-17-0x0000000000B50000-0x0000000000B60000-memory.dmp

          Filesize

          64KB

        • memory/2360-57-0x0000000000B50000-0x0000000000B5A000-memory.dmp

          Filesize

          40KB

        • memory/2360-14-0x0000000000040000-0x0000000000322000-memory.dmp

          Filesize

          2.9MB

        • memory/2360-16-0x0000000000B50000-0x0000000000B5A000-memory.dmp

          Filesize

          40KB

        • memory/2508-13-0x0000000000930000-0x0000000000948000-memory.dmp

          Filesize

          96KB

        • memory/2508-58-0x0000000000920000-0x000000000092C000-memory.dmp

          Filesize

          48KB

        • memory/2736-34-0x0000000002760000-0x0000000002768000-memory.dmp

          Filesize

          32KB

        • memory/2736-33-0x000000001B710000-0x000000001B9F2000-memory.dmp

          Filesize

          2.9MB

        • memory/2972-11-0x0000000000400000-0x00000000006F8000-memory.dmp

          Filesize

          3.0MB