Resubmissions

22-08-2024 16:26

240822-txrmmawhlh 10

21-08-2024 12:58

240821-p7nw9szblg 10

Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-08-2024 12:58

General

  • Target

    600ea8be786d5acc5fa71c8dd19297049a4e9f1fe6a597c2ebcc9785acd8bdd1.exe

  • Size

    331KB

  • MD5

    63b427f3875eaf7475491877a49f71c5

  • SHA1

    8d6a1d3ce30eec4284cc3303fdf12a22a12f2a82

  • SHA256

    600ea8be786d5acc5fa71c8dd19297049a4e9f1fe6a597c2ebcc9785acd8bdd1

  • SHA512

    c9ee7f62f028aafe4a2753e50c61a1ae25816d586f6eb080d6ff20be0f7d27f8b5b384ad473625042e76b2e708cf0407e52d8a6fda5c9f1ffc0caf40a4636a3c

  • SSDEEP

    6144:eEjIabdDyAnk2S5dE1hQqX9lecEEMH9O1BNI:eAIabd7nkc1h9X9Mo7I

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

157.20.182.172:3232

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Async RAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 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 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 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 25 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3496
      • C:\Users\Admin\AppData\Local\Temp\600ea8be786d5acc5fa71c8dd19297049a4e9f1fe6a597c2ebcc9785acd8bdd1.exe
        "C:\Users\Admin\AppData\Local\Temp\600ea8be786d5acc5fa71c8dd19297049a4e9f1fe6a597c2ebcc9785acd8bdd1.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of WriteProcessMemory
        PID:3916
      • C:\Windows\System32\notepad.exe
        C:\Windows\System32\notepad.exe
        2⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1588
        • C:\Windows\System32\cmd.exe
          "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
          3⤵
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:2876
          • C:\Windows\System32\chcp.com
            chcp 65001
            4⤵
              PID:3148
            • C:\Windows\System32\netsh.exe
              netsh wlan show profile
              4⤵
              • Event Triggered Execution: Netsh Helper DLL
              • System Network Configuration Discovery: Wi-Fi Discovery
              PID:2104
            • C:\Windows\System32\findstr.exe
              findstr All
              4⤵
                PID:1688
            • C:\Windows\System32\cmd.exe
              "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
              3⤵
                PID:4128
                • C:\Windows\System32\chcp.com
                  chcp 65001
                  4⤵
                    PID:4064
                  • C:\Windows\System32\netsh.exe
                    netsh wlan show networks mode=bssid
                    4⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:5048

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\ef1f2a8a6fe235140cfdbb1a8d12a232\Admin@MKDTRXIT_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\ef1f2a8a6fe235140cfdbb1a8d12a232\Admin@MKDTRXIT_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              822d8baef549d3f22f3f4cdc58172176

              SHA1

              512b5321ec9374a40049e0b305bb5cfc50f29951

              SHA256

              538a66ca95b661ceab376d7141485f7fdda2697ece8944758ee2e91b571d9752

              SHA512

              1a061471e1ce22dbeddd8cfbc298a187cea91c8e684fd63928521e3c17e76e88998de48e974f51ac0c5c6c746e24714a911c023297c724f533d44ab720a481f0

            • C:\Users\Admin\AppData\Local\ef1f2a8a6fe235140cfdbb1a8d12a232\Admin@MKDTRXIT_en-US\System\Process.txt

              Filesize

              570B

              MD5

              ee10061dc976bf0214478fbe370e5531

              SHA1

              38f656e1e935822a1b6313227f9325662fc25259

              SHA256

              cef3ee2f03a7d7629f53ca64a16988d41a9082fee065115119a57b59dc2a3efb

              SHA512

              36dae6476dff0544c29d57ac6db58ab49da9327d807c7d9be3a1251eeddbf27124e3e373e6ca7abf8120079dd51da1d3478ccd0113ebe4bbf3cf5c94c750a9d0

            • memory/1588-7-0x00007FF90ED43000-0x00007FF90ED45000-memory.dmp

              Filesize

              8KB

            • memory/1588-14-0x0000013E64A90000-0x0000013E64AAE000-memory.dmp

              Filesize

              120KB

            • memory/1588-0-0x0000013E62E60000-0x0000013E62E76000-memory.dmp

              Filesize

              88KB

            • memory/1588-8-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-9-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-10-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-11-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-12-0x0000013E7D8C0000-0x0000013E7D936000-memory.dmp

              Filesize

              472KB

            • memory/1588-13-0x0000013E7D940000-0x0000013E7DAC8000-memory.dmp

              Filesize

              1.5MB

            • memory/1588-4-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-19-0x0000013E64A70000-0x0000013E64A7A000-memory.dmp

              Filesize

              40KB

            • memory/1588-3-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-2-0x0000013E649A0000-0x0000013E649B6000-memory.dmp

              Filesize

              88KB

            • memory/1588-159-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-162-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-173-0x0000013E7E140000-0x0000013E7E1BA000-memory.dmp

              Filesize

              488KB

            • memory/1588-1-0x00007FF90ED43000-0x00007FF90ED45000-memory.dmp

              Filesize

              8KB

            • memory/1588-208-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB

            • memory/1588-209-0x00007FF90ED40000-0x00007FF90F801000-memory.dmp

              Filesize

              10.8MB