Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    23/07/2024, 19:05

General

  • Target
    XClient.exe
  • Size 34KB
  • Sample240723-xrmy2ashrj
  • SHA256 12631c9b83e06b20eb1727eff06e2d6e264e8c58d62ea6ee5d351d195af3502a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • insurance-helmet.gl.at.ply.gg:31388

Mutex
  • wbZwsAW8h4Ee9jvd

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Extracted

Family
  • asyncrat

Botnet
  • Default

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • https://api.telegram.org/bot6758433214:AAHsOKdFy4qDz6vRHO6UQUpRG85G-wZvC1Y/sendMessage?chat_id=6234857847

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Detect Xworm Payload 1 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Async RAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 8 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Users\Admin\AppData\Local\Temp\odgstd.exe
      "C:\Users\Admin\AppData\Local\Temp\odgstd.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        • Suspicious use of WriteProcessMemory
        PID:4728
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2324
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:2292
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4064
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2184
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4516
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show networks mode=bssid
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:1844
    • C:\Users\Admin\AppData\Local\Temp\fdtbjs.exe
      "C:\Users\Admin\AppData\Local\Temp\fdtbjs.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      PID:4172
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
      PID:1876

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Process.txt

          • Path C:\Users\Admin\AppData\Local\3f962c9ad51052f393efea7eadf6c665\Admin@KZOWYSNI_en-US\System\Process.txt
          • Size 4KB
          • SHA256 996829ec0b76739f289b63f1cb4dc1bf2aadb684565aaa6faf53409c2c6632e5
          • MD5 SHA1 SHA512 SSDEEP

          fdtbjs.exe

          • Path C:\Users\Admin\AppData\Local\Temp\fdtbjs.exe
          • Size 436KB
          • SHA256 5b1267781df5fa980e338f4dacd44984955d92c438209e55088efd1b1820e9ac
          • MD5 SHA1 SHA512 SSDEEP

          odgstd.exe

          • Path C:\Users\Admin\AppData\Local\Temp\odgstd.exe
          • Size 175KB
          • SHA256 eb40ef4c4b8ba46300b9f95edc2f7f5ad4c7ea1e812580e3cda28b48f9ef0406
          • MD5 SHA1 SHA512 SSDEEP

          msgid.dat

          • Path C:\Users\Admin\AppData\Local\c1ac1dce9794b2828be22d26e4549175\msgid.dat
          • Size 1B
          • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
          • MD5 SHA1 SHA512

          memory/2316-11-0x00000000002B0000-0x00000000002E2000-memory.dmp

          memory/2316-10-0x00007FFAA39E0000-0x00007FFAA3BBB000-memory.dmp

          memory/2316-12-0x0000000004AF0000-0x0000000004B56000-memory.dmp

          memory/2316-130-0x0000000005610000-0x00000000056A2000-memory.dmp

          memory/2316-131-0x0000000005BB0000-0x00000000060AE000-memory.dmp

          memory/2316-135-0x0000000005720000-0x000000000572A000-memory.dmp

          memory/2316-141-0x0000000005B90000-0x0000000005BA2000-memory.dmp

          memory/4172-170-0x0000000000400000-0x0000000000474000-memory.dmp

          memory/4920-4-0x00007FFAA39E0000-0x00007FFAA3BBB000-memory.dmp

          memory/4920-3-0x00007FFAA39E0000-0x00007FFAA3BBB000-memory.dmp

          memory/4920-0-0x0000000000D30000-0x0000000000D3E000-memory.dmp

          memory/4920-1-0x00007FFAA39E0000-0x00007FFAA3BBB000-memory.dmp