Resubmissions

20/12/2024, 17:30

241220-v3ka6szqez10

20/12/2024, 14:21

241220-rpab9sxles10

11/12/2024, 16:57

241211-vgr4wswlfm10

01/08/2024, 19:42

240801-yexhdazcna10

01/08/2024, 19:39

240801-ydeaeazclc10

01/08/2024, 01:19

240801-bpyrvsycrd10

Analysis

  • max time kernel
    79s
  • max time network
    82s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240730-en
  • resource tags

    arch:x64arch:x86image:win11-20240730-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    01/08/2024, 19:39

General

  • Target
    40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff.exe
  • Size 175KB
  • Sample240801-ydeaeazclc
  • SHA256 40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

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/bot6082381502:AAFgFkge53k6kBZcTN8CBICiZV-VphQ1WgA/sendMessage?chat_id=5795480469

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#.

  • StormKitty

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

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

    Malicious Access or copy of Web Browser Credential store.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 16 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.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 12 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 16 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 4 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 4 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff.exe
    "C:\Users\Admin\AppData\Local\Temp\40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff.exe"
    1⤵
    • 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:3256
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      • Suspicious use of WriteProcessMemory
      PID:3532
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2928
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show profile
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        PID:4884
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2060
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4500
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show networks mode=bssid
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:4336
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4388
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2696
    • C:\Users\Admin\AppData\Local\Temp\40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff.exe
      "C:\Users\Admin\AppData\Local\Temp\40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff.exe"
      1⤵
      • 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:1204
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        2⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        • Suspicious use of WriteProcessMemory
        PID:2264
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          3⤵
          • System Location Discovery: System Language Discovery
          PID:1476
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:1880
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2212
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3692
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2332
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show networks mode=bssid
          3⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:4904

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Process.txt

          • Path C:\Users\Admin\AppData\Local\5b214429d8387dd7e28e90606dec8c55\Admin@XEGYFDPH_en-US\System\Process.txt
          • Size 4KB
          • SHA256 523b1b20a8d9328111e70fdd1acc16230985c64d5769ddcfc966af51714f65d5
          • MD5 SHA1 SHA512 SSDEEP

          msgid.dat

          • Path C:\Users\Admin\AppData\Local\627f15b3bc02260be74d8e66f14a9852\msgid.dat
          • Size 1B
          • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
          • MD5 SHA1 SHA512

          places.raw

          • Path C:\Users\Admin\AppData\Local\Temp\places.raw
          • Size 5.0MB
          • SHA256 51edf88baf821ddd3e0243690686cf1165bb0236c342db288a3522aacbd68673
          • MD5 SHA1 SHA512 SSDEEP

          tmp1940.tmp.dat

          • Path C:\Users\Admin\AppData\Local\Temp\tmp1940.tmp.dat
          • Size 114KB
          • SHA256 8d95ff19d697afe7bfd166c4ffc38921fae8434043c09c900c303841acb36ce1
          • MD5 SHA1 SHA512 SSDEEP

          tmp1951.tmp.dat

          • Path C:\Users\Admin\AppData\Local\Temp\tmp1951.tmp.dat
          • Size 160KB
          • SHA256 e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855
          • MD5 SHA1 SHA512 SSDEEP

          tmp1964.tmp.dat

          • Path C:\Users\Admin\AppData\Local\Temp\tmp1964.tmp.dat
          • Size 112KB
          • SHA256 eeb23424586eb7bc62b51b19f1719c6571b71b167f4d63f25984b7f5c5436db1
          • MD5 SHA1 SHA512 SSDEEP

          Bookmarks.txt

          • Path C:\Users\Admin\AppData\Local\e86cffeccd745510e987c16d14c4f30b\Admin@XEGYFDPH_en-US\Browsers\Firefox\Bookmarks.txt
          • Size 105B
          • SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
          • MD5 SHA1 SHA512

          Process.txt

          • Path C:\Users\Admin\AppData\Local\e86cffeccd745510e987c16d14c4f30b\Admin@XEGYFDPH_en-US\System\Process.txt
          • Size 4KB
          • SHA256 4775e33c7545d6221955aa456d6d509c36f8ede28095c117eec4a0fd4ebaa567
          • MD5 SHA1 SHA512 SSDEEP

          memory/3256-140-0x0000000005C70000-0x0000000005D02000-memory.dmp

          memory/3256-151-0x000000007490E000-0x000000007490F000-memory.dmp

          memory/3256-0-0x000000007490E000-0x000000007490F000-memory.dmp

          memory/3256-152-0x0000000074900000-0x00000000750B1000-memory.dmp

          memory/3256-2-0x0000000074900000-0x00000000750B1000-memory.dmp

          memory/3256-141-0x00000000062C0000-0x0000000006866000-memory.dmp

          memory/3256-145-0x0000000005D60000-0x0000000005D6A000-memory.dmp

          memory/3256-1-0x0000000000620000-0x0000000000652000-memory.dmp

          memory/3256-3-0x00000000050C0000-0x0000000005126000-memory.dmp