Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 01:24

General

  • Target

    8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe

  • Size

    986KB

  • MD5

    d5da623ad42a511796d291c516a5dbb6

  • SHA1

    029ef97714317521a472f7a8770295421a585e45

  • SHA256

    8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91

  • SHA512

    eb64880cbe757026605f76d737f00ed73fb28b0580cab7a1f225295252fa3f366875e999e2493c4a7050769aa8989660ec140dc39231974f011e91001eb50acd

  • SSDEEP

    24576:xGQ3AgIk9qzYhJVbysG2iPQE2cjYkT0CdA0uYvr0TzP1R:gQQJk9xVboRPQLcfTZZRvwTzPn

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

mandope483.duckdns.org:59033

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-JPRNP1

  • 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

  • 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 3 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 3 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
    "C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3064
    • 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\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2696
    • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
      "C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
        C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe /stext "C:\Users\Admin\AppData\Local\Temp\hdnpfhumavriwduu"
        3⤵
          PID:1692
        • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
          C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe /stext "C:\Users\Admin\AppData\Local\Temp\hdnpfhumavriwduu"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1504
        • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
          C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe /stext "C:\Users\Admin\AppData\Local\Temp\rxsafafoodjnzjiylfsh"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:1780
        • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
          C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe /stext "C:\Users\Admin\AppData\Local\Temp\czftgkphclbajpekcqejgzg"
          3⤵
            PID:2416
          • C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe
            C:\Users\Admin\AppData\Local\Temp\8df645995df261a5bc7c19d2ba16127256054497e498faaba582dffe10e01f91.exe /stext "C:\Users\Admin\AppData\Local\Temp\czftgkphclbajpekcqejgzg"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2504

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        0bb0ffe5bbc12e60c46fabb6b400880b

        SHA1

        4ff647804e339b2724f8d9becff210276e4e38cd

        SHA256

        ca9ecc83645cb77048a69b52ce1ebbcd7ee8d9bac1205aa96b49e55cfd71db85

        SHA512

        f125b34ee341d4d552532f7cd2f987b44230a9016af6057f2ca18da19d0182f95038bf086e6365bfd00085dde5b23e87cd57ba14e05ffc0bf568502d5a50f986

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • memory/1504-38-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1504-42-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1504-44-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1780-41-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1780-43-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1780-40-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2504-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2504-46-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2504-47-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2504-48-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2648-55-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2648-61-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2648-15-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-13-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-11-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-10-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-27-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-30-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-31-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-33-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-35-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-86-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-21-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-22-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-25-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-7-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-9-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-85-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-78-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-77-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-70-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-69-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-62-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-59-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2648-58-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2648-60-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/2648-19-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3064-0-0x00000000743AE000-0x00000000743AF000-memory.dmp

        Filesize

        4KB

      • memory/3064-1-0x0000000000B90000-0x0000000000C8C000-memory.dmp

        Filesize

        1008KB

      • memory/3064-2-0x00000000743A0000-0x0000000074A8E000-memory.dmp

        Filesize

        6.9MB

      • memory/3064-3-0x00000000743AE000-0x00000000743AF000-memory.dmp

        Filesize

        4KB

      • memory/3064-4-0x0000000000540000-0x0000000000552000-memory.dmp

        Filesize

        72KB

      • memory/3064-5-0x00000000743A0000-0x0000000074A8E000-memory.dmp

        Filesize

        6.9MB

      • memory/3064-6-0x0000000005380000-0x0000000005444000-memory.dmp

        Filesize

        784KB

      • memory/3064-26-0x00000000743A0000-0x0000000074A8E000-memory.dmp

        Filesize

        6.9MB