Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240709-en
  • resource tags

    arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-07-2024 19:05

General

  • Target

    XClient.exe

  • Size

    34KB

  • MD5

    8bb9d79ea292fc23e600ebd7957e9333

  • SHA1

    4e78c73a5383f14edc669260524da4bdd5130c36

  • SHA256

    12631c9b83e06b20eb1727eff06e2d6e264e8c58d62ea6ee5d351d195af3502a

  • SHA512

    35101121210917d2dfd34e48f1b29e8806637b58cd18a0bbf93da1ee6decfac12ce55c0820e22c691287c7572bcdba69fc5d134ba4834c015aa553250d6383d8

  • SSDEEP

    384:+xYQVyqLSxEe4fIETsI5feQjFptmByujICLYFiiXmv50QAXnxF8QFhk58pkFyHBp:yrvaUuYsIQehkVFyr9eWTOjhmSDc

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) 7 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 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:2460
    • C:\Users\Admin\AppData\Local\Temp\lsegip.exe
      "C:\Users\Admin\AppData\Local\Temp\lsegip.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:508
      • 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:4960
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2624
        • 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:5664
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3704
      • 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:5700
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1668
        • 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:4132
    • C:\Users\Admin\AppData\Local\Temp\tekxdu.exe
      "C:\Users\Admin\AppData\Local\Temp\tekxdu.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:4736
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:5912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\29eb23550e208a74a9f0aeaee60bbdd7\Admin@BOBTBVSB_en-US\Browsers\Firefox\Bookmarks.txt

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

  • C:\Users\Admin\AppData\Local\29eb23550e208a74a9f0aeaee60bbdd7\Admin@BOBTBVSB_en-US\System\Process.txt

    Filesize

    4KB

    MD5

    19c9917fb3b0cf9bf59a3c482429377a

    SHA1

    e1f70d97e7cbc0689013a5fac5fc3cc58f6a4680

    SHA256

    53014199e8c9e4d9444bb7b9e3afb9c5ace833b3ab859bb9aef1bfe6a16065de

    SHA512

    eea34ed5b0b59f23208479481529e677415cf6c84af8cf55d25bc29262b85ec67599ae697b082cf05336421366cd9130609b44552a2c49ab8fc49f535f87e6e7

  • C:\Users\Admin\AppData\Local\Temp\lsegip.exe

    Filesize

    175KB

    MD5

    9f2d773fd80c4da7ae3ce95da359f9dc

    SHA1

    6cb470ad352e52ea0ec5f863ea4ee083e983caed

    SHA256

    eb40ef4c4b8ba46300b9f95edc2f7f5ad4c7ea1e812580e3cda28b48f9ef0406

    SHA512

    83a6af54e2d550e1b8f20b6709e7f06515e4c491cbc25ebf1f1e62533cb3f71ef9b58a453f64e04eace1b7cb06f55771907047eba4afa993d88453a74825850f

  • C:\Users\Admin\AppData\Local\Temp\tekxdu.exe

    Filesize

    436KB

    MD5

    173a4279e79645180febd00f8a66fefe

    SHA1

    92ed3111f7bf0f63e5089463b04c9dec0d2cd7e8

    SHA256

    5b1267781df5fa980e338f4dacd44984955d92c438209e55088efd1b1820e9ac

    SHA512

    f572abb593a1ffb10f8b106ed9e17d47b2cce4955da965d6915069c3bc310b7365414d6fe49cc63aad3ab0375125afd04949b1cfb9299b27bf34d004c1c2da5f

  • C:\Users\Admin\AppData\Local\d882d708265ca57d831ea0bf43b43c04\msgid.dat

    Filesize

    1B

    MD5

    cfcd208495d565ef66e7dff9f98764da

    SHA1

    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

    SHA256

    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

    SHA512

    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

  • memory/508-160-0x0000000074B10000-0x00000000752C1000-memory.dmp

    Filesize

    7.7MB

  • memory/508-195-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

    Filesize

    4KB

  • memory/508-18-0x0000000000810000-0x0000000000842000-memory.dmp

    Filesize

    200KB

  • memory/508-19-0x0000000074B10000-0x00000000752C1000-memory.dmp

    Filesize

    7.7MB

  • memory/508-20-0x00000000053E0000-0x0000000005446000-memory.dmp

    Filesize

    408KB

  • memory/508-197-0x0000000074B10000-0x00000000752C1000-memory.dmp

    Filesize

    7.7MB

  • memory/508-196-0x0000000074B10000-0x00000000752C1000-memory.dmp

    Filesize

    7.7MB

  • memory/508-159-0x0000000005E30000-0x0000000005EC2000-memory.dmp

    Filesize

    584KB

  • memory/508-17-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

    Filesize

    4KB

  • memory/508-161-0x0000000006480000-0x0000000006A26000-memory.dmp

    Filesize

    5.6MB

  • memory/508-165-0x0000000005F10000-0x0000000005F1A000-memory.dmp

    Filesize

    40KB

  • memory/508-171-0x0000000006460000-0x0000000006472000-memory.dmp

    Filesize

    72KB

  • memory/2460-0-0x00007FF9D8843000-0x00007FF9D8845000-memory.dmp

    Filesize

    8KB

  • memory/2460-4-0x00007FF9D8843000-0x00007FF9D8845000-memory.dmp

    Filesize

    8KB

  • memory/2460-1-0x00000000009C0000-0x00000000009CE000-memory.dmp

    Filesize

    56KB

  • memory/2460-3-0x00007FF9D8840000-0x00007FF9D9302000-memory.dmp

    Filesize

    10.8MB

  • memory/2460-5-0x00007FF9D8840000-0x00007FF9D9302000-memory.dmp

    Filesize

    10.8MB

  • memory/4736-206-0x0000000000400000-0x0000000000474000-memory.dmp

    Filesize

    464KB