Analysis

  • max time kernel
    91s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-02-2023 14:29

General

  • Target

    be5b21387901bb069615fd1b4ed206c5.exe

  • Size

    640KB

  • MD5

    be5b21387901bb069615fd1b4ed206c5

  • SHA1

    1b165159320a2383b3660897f8d22f69d38ff445

  • SHA256

    c1f48df6bc08fbcc1d87a604d3b71d8db009e1d86d845a86363942b48f51880a

  • SHA512

    eb1084ddd5d6b7edc3e9fbd78585122ed998de3e4aa0ea9127896e352a543d6fd81182f50aec79e1a750615512e8b2709811684f6ade950113dd39eb6d8fd8f1

  • SSDEEP

    12288:aCe8LxGQ7MRSRAsDYeQBWlWc4b70eU06zTwjZ++R5Mi6/ZVgCp0TLAXZoCzZW:aN88Q7aQjDYLWlhW7JUyZ++R5PyZ5pcQ

Malware Config

Signatures

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

  • Matiex Main payload 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
    "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
    1⤵
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2232
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
        3⤵
        • Creates scheduled task(s)
        PID:2752
    • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
      "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
      2⤵
        PID:4208
      • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
        "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
        2⤵
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
          "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
          3⤵
            PID:3304
          • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
            "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
            3⤵
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1756
            • C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe
              "C:\Users\Admin\AppData\Local\Temp\be5b21387901bb069615fd1b4ed206c5.exe"
              4⤵
              • Accesses Microsoft Outlook profiles
              • Suspicious use of AdjustPrivilegeToken
              • outlook_office_path
              • outlook_win_path
              PID:368
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 1896
                5⤵
                • Program crash
                PID:4236
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 368 -ip 368
        1⤵
          PID:4484

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml

          Filesize

          1KB

          MD5

          2feaac3555165aa7b76fabc3984fe19b

          SHA1

          76710b1b204309f4d057eba17bba71b7444f52af

          SHA256

          68052979b38f028b24e466114471d2d49568b83a9a7f051a82a72c5ca4e8c01c

          SHA512

          81cf57a2ad53f9eaf9a21799dc87e7846a1669a370e05597f58ffb87a91f8f38814375e675880a6d9cdb5bb667d47cb875e6fb471d9a9b143f81a83e6f5b6739

        • memory/368-146-0x0000000005860000-0x00000000058C6000-memory.dmp

          Filesize

          408KB

        • memory/368-145-0x0000000005DA0000-0x0000000006344000-memory.dmp

          Filesize

          5.6MB

        • memory/368-144-0x0000000005750000-0x00000000057EC000-memory.dmp

          Filesize

          624KB

        • memory/368-143-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/368-140-0x0000000000000000-mapping.dmp

        • memory/1756-141-0x0000000000D6A000-0x0000000000D70000-memory.dmp

          Filesize

          24KB

        • memory/1756-139-0x0000000000000000-mapping.dmp

        • memory/2232-132-0x0000000000000000-mapping.dmp

        • memory/2616-135-0x0000000000000000-mapping.dmp

        • memory/2616-138-0x00000000009FB000-0x0000000000A00000-memory.dmp

          Filesize

          20KB

        • memory/2752-134-0x0000000000000000-mapping.dmp

        • memory/3304-137-0x0000000000000000-mapping.dmp

        • memory/4208-133-0x0000000000000000-mapping.dmp

        • memory/4984-136-0x00000000008FB000-0x0000000000900000-memory.dmp

          Filesize

          20KB