Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2024, 08:59

General

  • Target

    7.exe

  • Size

    469KB

  • MD5

    dc8e165fdff950b379ce9705d4690b5f

  • SHA1

    1457cd39b3698f41707e11834140394f8b5963d4

  • SHA256

    b6fcfdfd823157dae98956ac4ab36ea36b723b572c792b54433285875aa6b57c

  • SHA512

    4b8dd39e8d1029a7a848ffa48340e87f6a404d18868a87c03a0baefc863818eb2d5b2c89483afd1acfd1a2960409aadf032cefafc0a9931a2ae45319debd4a36

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS1n9:uiLJbpI7I2WhQqZ719

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

core-hook.gl.at.ply.gg:7242

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    scvhost.exe

  • copy_folder

    files

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-9G9DMK

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    scvhost

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • UAC bypass 3 TTPs 3 IoCs
  • 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

  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

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

  • Modifies registry class 2 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7.exe
    "C:\Users\Admin\AppData\Local\Temp\7.exe"
    1⤵
    • Adds policy Run key to start application
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:4520
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:944
        • C:\ProgramData\files\scvhost.exe
          C:\ProgramData\files\scvhost.exe
          4⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2616
          • C:\Windows\SysWOW64\cmd.exe
            /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4636
            • C:\Windows\SysWOW64\reg.exe
              C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • UAC bypass
              • System Location Discovery: System Language Discovery
              • Modifies registry key
              PID:1520
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
            • Adds policy Run key to start application
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:616
            • C:\Windows\SysWOW64\cmd.exe
              /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2040
              • C:\Windows\SysWOW64\reg.exe
                C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
                7⤵
                • UAC bypass
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:1808
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:1832
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nvncnuvpwxbotujpxtxddasbclxukkymsf"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:4044
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\xptunmg"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:1376
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\asynoxrkyn"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1032
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\nsmcuyquvbjpeafkcwfceusnvnctvh.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:976

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      dc8e165fdff950b379ce9705d4690b5f

      SHA1

      1457cd39b3698f41707e11834140394f8b5963d4

      SHA256

      b6fcfdfd823157dae98956ac4ab36ea36b723b572c792b54433285875aa6b57c

      SHA512

      4b8dd39e8d1029a7a848ffa48340e87f6a404d18868a87c03a0baefc863818eb2d5b2c89483afd1acfd1a2960409aadf032cefafc0a9931a2ae45319debd4a36

    • C:\Users\Admin\AppData\Local\Temp\install.vbs

      Filesize

      500B

      MD5

      285ab3656a995c39ba841ab773a604d3

      SHA1

      9062a2e8a77245f1cf2f9e06c4694c7346e778f3

      SHA256

      89013c58495ebf9ab56091dadb08fde2d2156c061ba6eb6613e4dd5dafdf493c

      SHA512

      92cb1bf9c11a4cf9a21c55f83aabe28c908108d32127308c0b218933582f26c2c04d1334342202496d5c1afc8da0dbe3503cf25356da5329fdc9c643af625bbf

    • C:\Users\Admin\AppData\Local\Temp\nsmcuyquvbjpeafkcwfceusnvnctvh.vbs

      Filesize

      528B

      MD5

      3478bb3d9b1528548baa4ee1de04d269

      SHA1

      92c19b97cd135f38d5964bc079df412a20358927

      SHA256

      684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

      SHA512

      84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

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

      Filesize

      4KB

      MD5

      c3c5f2de99b7486f697634681e21bab0

      SHA1

      00f90d495c0b2b63fde6532e033fdd2ade25633d

      SHA256

      76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

      SHA512

      7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

    • memory/616-38-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-41-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-15-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-9-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-18-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-17-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-20-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-19-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-22-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-50-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-46-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-45-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-44-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-43-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-42-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-40-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-39-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-10-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-11-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/616-37-0x0000000000C20000-0x0000000000C9F000-memory.dmp

      Filesize

      508KB

    • memory/1032-28-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1032-29-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1032-25-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1376-27-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1376-30-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1376-24-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1832-14-0x0000000000C90000-0x0000000000D0F000-memory.dmp

      Filesize

      508KB

    • memory/1832-16-0x0000000000C90000-0x0000000000D0F000-memory.dmp

      Filesize

      508KB

    • memory/4044-23-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4044-26-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4044-31-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB