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Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    31/08/2024, 02:07

General

  • Target

    f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe

  • Size

    1.0MB

  • MD5

    a3a1178a681a45c960b0ed5d0c47926b

  • SHA1

    9048f61cab453a6d4eb6ebae1bd2f913350975d9

  • SHA256

    f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713

  • SHA512

    974b0726a47312b9ecf429d4ba7716e196448655e24775f9443c5cc5b5a3fb790ef917baf30dc0da4907c9298ddff10fd411b806103a261dcc926c0f008ce0e3

  • SSDEEP

    24576:78+0suO3PuzmSe//zGdg7Vbo11Im2YJAssiWV9w9pTNLo:juO/uzmN/CdSmfUqPx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.106.127.79:5679

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-7VNLX4

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
    "C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2744
    • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
      "C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe"
      2⤵
        PID:2828
      • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
        "C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2860
        • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
          C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe /stext "C:\Users\Admin\AppData\Local\Temp\scojjaunspusppikdminwmojle"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1948
        • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
          C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe /stext "C:\Users\Admin\AppData\Local\Temp\cetcksfpgxmfadeomxdphzjaukngq"
          3⤵
            PID:372
          • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
            C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe /stext "C:\Users\Admin\AppData\Local\Temp\cetcksfpgxmfadeomxdphzjaukngq"
            3⤵
              PID:2648
            • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
              C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe /stext "C:\Users\Admin\AppData\Local\Temp\cetcksfpgxmfadeomxdphzjaukngq"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2016
            • C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe
              C:\Users\Admin\AppData\Local\Temp\f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713.exe /stext "C:\Users\Admin\AppData\Local\Temp\eyymllqiufejcjssviqikevjvzfprjud"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:2044

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\scojjaunspusppikdminwmojle

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/1948-37-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1948-36-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1948-46-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2016-40-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2016-45-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2016-39-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2044-44-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2044-43-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2044-42-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2584-3-0x0000000000460000-0x0000000000478000-memory.dmp

          Filesize

          96KB

        • memory/2584-24-0x0000000074E80000-0x000000007556E000-memory.dmp

          Filesize

          6.9MB

        • memory/2584-6-0x0000000005000000-0x00000000050C0000-memory.dmp

          Filesize

          768KB

        • memory/2584-5-0x0000000074E80000-0x000000007556E000-memory.dmp

          Filesize

          6.9MB

        • memory/2584-4-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

          Filesize

          4KB

        • memory/2584-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

          Filesize

          4KB

        • memory/2584-1-0x0000000000C70000-0x0000000000D7C000-memory.dmp

          Filesize

          1.0MB

        • memory/2584-2-0x0000000074E80000-0x000000007556E000-memory.dmp

          Filesize

          6.9MB

        • memory/2860-8-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-13-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-9-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-16-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-27-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2860-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-19-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-7-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-54-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2860-58-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2860-57-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2860-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-61-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-62-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-63-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-64-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-65-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-66-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2860-67-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB