Analysis

  • max time kernel
    148s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 04:34

General

  • Target
    2024-05-30_f189d5cd0a010355a57583247f386c41_hiddentear.exe
  • Size 162KB
  • Sample240530-e69r8sfg47
  • SHA256 d77887e43b9073cfbb4eb4fecb647c002fc71cd7fe528bacedd78c08e9f4664a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • 127.0.0.1:1010

Attributes
  • Install_directory

    %AppData%

  • install_file

    mobejaia.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Detects Windows executables referencing non-Windows User-Agents 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\2024-05-30_f189d5cd0a010355a57583247f386c41_hiddentear.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_f189d5cd0a010355a57583247f386c41_hiddentear.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2892
    • 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\2024-05-30_f189d5cd0a010355a57583247f386c41_hiddentear.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4692
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '2024-05-30_f189d5cd0a010355a57583247f386c41_hiddentear.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:748
    • 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\mobejaia.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3580
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mobejaia.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1964
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "mobejaia" /tr "C:\Users\Admin\AppData\Roaming\mobejaia.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4112
  • C:\Users\Admin\AppData\Roaming\mobejaia.exe
    C:\Users\Admin\AppData\Roaming\mobejaia.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1784
  • C:\Users\Admin\AppData\Roaming\mobejaia.exe
    C:\Users\Admin\AppData\Roaming\mobejaia.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1908

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        mobejaia.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\mobejaia.exe.log
        • Size 654B
        • SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
        • MD5 SHA1 SHA512

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 34dd19ebba6598d5f586b5c7ac30babf89d055b5f1a6e959129a39311fe4026b
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_etneqdmf.4iz.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_etneqdmf.4iz.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        mobejaia.exe

        • Path C:\Users\Admin\AppData\Roaming\mobejaia.exe
        • Size 162KB
        • SHA256 d77887e43b9073cfbb4eb4fecb647c002fc71cd7fe528bacedd78c08e9f4664a
        • MD5 SHA1 SHA512 SSDEEP

        memory/2892-0-0x00007FFA6A4B3000-0x00007FFA6A4B5000-memory.dmp

        memory/2892-2-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/2892-57-0x00007FFA6A4B3000-0x00007FFA6A4B5000-memory.dmp

        memory/2892-58-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/2892-1-0x0000000000830000-0x000000000085E000-memory.dmp

        memory/4692-14-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/4692-15-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/4692-18-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/4692-9-0x00007FFA6A4B0000-0x00007FFA6AF71000-memory.dmp

        memory/4692-3-0x000001ABAAAD0000-0x000001ABAAAF2000-memory.dmp