Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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 12:36

General

  • Target

    14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe

  • Size

    331KB

  • MD5

    3a0a8189bb8910131bd13c098a1de18b

  • SHA1

    600ff8878e9782ff7d3df847b379eca20d3e3bdd

  • SHA256

    14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5

  • SHA512

    7c55c20d70f08b0c57390fc1decf1d26573c7e04738f1187e2ab3b8ecb0e3aebc06072f88724735828e114cad6592346c0c6b3a8db90c0b5765571fd5beefb6f

  • SSDEEP

    6144:o2x6R9b8D6InoSbfVmEtpMMlRMH9O1BNI:o46R9b87noWYapMMlRMo7I

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

45.66.231.150:3232

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 27 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:3320
      • C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe
        "C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of WriteProcessMemory
        PID:3092
      • 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:1616
        • 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:1368
          • C:\Windows\System32\chcp.com
            chcp 65001
            4⤵
              PID:908
            • C:\Windows\System32\netsh.exe
              netsh wlan show profile
              4⤵
              • Event Triggered Execution: Netsh Helper DLL
              • System Network Configuration Discovery: Wi-Fi Discovery
              PID:1208
            • C:\Windows\System32\findstr.exe
              findstr All
              4⤵
                PID:1664
            • C:\Windows\System32\cmd.exe
              "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
              3⤵
                PID:3156
                • C:\Windows\System32\chcp.com
                  chcp 65001
                  4⤵
                    PID:4404
                  • C:\Windows\System32\netsh.exe
                    netsh wlan show networks mode=bssid
                    4⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:1272

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\1af02931f6a427a6b6e36285307150c0\Admin@KZYBFHMK_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\1af02931f6a427a6b6e36285307150c0\Admin@KZYBFHMK_en-US\System\Process.txt

              Filesize

              2KB

              MD5

              cce18cc82101ed148d8c28ef3133463b

              SHA1

              dfe58d399cad25173fd38d32e5f27abcd1dad79e

              SHA256

              407d298adc916f819efb25d30e3e3fa86b35d40296e59ecb0c6eb166bd006fb8

              SHA512

              a719b9fbf6f0481a3ed741cdcf9bc594635a01bdd82fc34d0c75385d4cf61a22ab8de6859157d9b7de953d7a0d5dbf571a12f24ac795d0d3de915bfcb9f40131

            • C:\Users\Admin\AppData\Local\1af02931f6a427a6b6e36285307150c0\Admin@KZYBFHMK_en-US\System\Process.txt

              Filesize

              3KB

              MD5

              4298f50d5013cd07eb6896b4607f13eb

              SHA1

              a19ef8beecbe92aaf848b565178aef68317af91d

              SHA256

              8c1354d77a30dde6f0dadfbfb929c7ae96856e0c8bdfb8ad737fa6ec46c58360

              SHA512

              de535f19164af33054aeb77981bfdb85df18a3cdbe5916918c4c1ab3cdedcf9f23566352d43acd6e18e7db2e82116af729d1836050480676f6ae0410856d8ef0

            • C:\Users\Admin\AppData\Local\1af02931f6a427a6b6e36285307150c0\Admin@KZYBFHMK_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              034a770f5fcad650cf609656fc99bf8d

              SHA1

              1da51ea87ff8f4274bf5a633998b10fc410a0d5b

              SHA256

              61bc1abd8232e1405339e365f4fb005daca099d21e51b355d0cc1e0dbc25b542

              SHA512

              71b08030b9590f4333396ff03bad49a7584ad671d2d284642a92583d01b8b7c22a9beb4365c31554498ca25cb9520e4f01f5a46f51ef1069f3562fd44f3f709c

            • C:\Users\Admin\AppData\Local\1af02931f6a427a6b6e36285307150c0\Admin@KZYBFHMK_en-US\System\Process.txt

              Filesize

              1KB

              MD5

              c4f21ae630f4d5e788c6ad66e1c61d19

              SHA1

              faa753d2fc2e2178a116f2f1e55698df12e58d12

              SHA256

              8c8e864772bef4582f345477312893365aea8795006ca5b30bf9161cf27ad90c

              SHA512

              53cf98608027535c45174bcc3579ff5a43bbd4c27d9b0b455fc48bdf6e65fc46295e55d93751d6f439d941cc4a085e8b8b07424a0c4f6e7e689b141dfb6d7269

            • memory/1616-14-0x0000020176300000-0x000002017631E000-memory.dmp

              Filesize

              120KB

            • memory/1616-7-0x00007FFA52273000-0x00007FFA52275000-memory.dmp

              Filesize

              8KB

            • memory/1616-9-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-10-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-11-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-13-0x00000201763E0000-0x0000020176568000-memory.dmp

              Filesize

              1.5MB

            • memory/1616-12-0x0000020176360000-0x00000201763D6000-memory.dmp

              Filesize

              472KB

            • memory/1616-0-0x00000201731F0000-0x0000020173206000-memory.dmp

              Filesize

              88KB

            • memory/1616-19-0x00000201762E0000-0x00000201762EA000-memory.dmp

              Filesize

              40KB

            • memory/1616-8-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-4-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-3-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-2-0x0000020174D20000-0x0000020174D36000-memory.dmp

              Filesize

              88KB

            • memory/1616-160-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-163-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-174-0x0000020176A20000-0x0000020176A9A000-memory.dmp

              Filesize

              488KB

            • memory/1616-1-0x00007FFA52273000-0x00007FFA52275000-memory.dmp

              Filesize

              8KB

            • memory/1616-209-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB

            • memory/1616-210-0x00007FFA52270000-0x00007FFA52D31000-memory.dmp

              Filesize

              10.8MB