Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2024, 18:48

General

  • Target

    Realtek HD Audio Universal Service.exe

  • Size

    53KB

  • MD5

    ce3e5f8613ea049b651549eba3e3aa28

  • SHA1

    1197375be314ae5a69f3b742f0f539b881aca09a

  • SHA256

    9385116a4a3874548ffa027f4cd448d860ef8dc13fc687ce87790a01ede8e73a

  • SHA512

    ab1428177b5ec71447003ac01f5f99d9c7f2af634f17ef53d6f6be196714faac856b0bc3f62b6fad9975dad970ec247d35f56615c62b9ad483426f4ecaae71c2

  • SSDEEP

    768:/63AQe9cfNbv5s7Xol68y+JN/Db3dLPowu7aR6vaTOouhIZqklm:/WAQbdvoolZJ9b3dLPoCR68OnkZ8

Malware Config

Extracted

Family

xworm

C2

147.185.221.23:58112

Attributes
  • Install_directory

    %AppData%

  • install_file

    Realtek HD Audio Universal Service.exe

Signatures

  • Detect Xworm Payload 1 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.

  • 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).

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Realtek HD Audio Universal Service.exe
    "C:\Users\Admin\AppData\Local\Temp\Realtek HD Audio Universal Service.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2232
    • 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\Realtek HD Audio Universal Service.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2776
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Realtek HD Audio Universal Service.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2580
    • 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\Realtek HD Audio Universal Service.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:576
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Realtek HD Audio Universal Service.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2128

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    7KB

    MD5

    8767a011c503950e9e0f1666b1d91d0e

    SHA1

    2bb3614a853fc4bdc48cfaee7dd173fd0f493338

    SHA256

    5749ff37113068074832dbcce380359570c43d12e990733f52c01dec0c0e92d7

    SHA512

    c6dd0d4e3a14b67c605fbd4c3e596994ca7bdb14257b0fa3cbbb9c6dcaf40bae08589490f62a76b42122cc6486bb4fd42f22a753c356cccca93c67d8ee3b5813

  • memory/2232-0-0x000007FEF61C3000-0x000007FEF61C4000-memory.dmp

    Filesize

    4KB

  • memory/2232-1-0x00000000003D0000-0x00000000003E4000-memory.dmp

    Filesize

    80KB

  • memory/2232-2-0x000007FEF61C0000-0x000007FEF6BAC000-memory.dmp

    Filesize

    9.9MB

  • memory/2232-22-0x000007FEF61C3000-0x000007FEF61C4000-memory.dmp

    Filesize

    4KB

  • memory/2232-29-0x000007FEF61C0000-0x000007FEF6BAC000-memory.dmp

    Filesize

    9.9MB

  • memory/2580-15-0x000000001B7A0000-0x000000001BA82000-memory.dmp

    Filesize

    2.9MB

  • memory/2580-16-0x00000000027E0000-0x00000000027E8000-memory.dmp

    Filesize

    32KB

  • memory/2776-7-0x0000000002CB0000-0x0000000002D30000-memory.dmp

    Filesize

    512KB

  • memory/2776-8-0x000000001B510000-0x000000001B7F2000-memory.dmp

    Filesize

    2.9MB

  • memory/2776-9-0x0000000002790000-0x0000000002798000-memory.dmp

    Filesize

    32KB