Analysis

  • max time kernel
    141s
  • max time network
    155s
  • 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

    18.exe

  • Size

    469KB

  • MD5

    6d24df24ca53f7c976d8d8bccc03777a

  • SHA1

    af23e6773c088cc55d32bcc6a23b637a5d3b8ff9

  • SHA256

    d1dd4f16d4b190d9fa1310fa43168659ab3586bdaf20e89363043d99d9e2a954

  • SHA512

    9935213e36576677a7e2332be05557e56f50828779f32343ca5dec7f2f413e1c7624b33bd6340ec465d45e3f031717a988797763a6cdad1f1c9632db308cb397

  • SSDEEP

    12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSwn9:WiLJbpI7I2WhQqZ7w9

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-CHH4HL

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18.exe
    "C:\Users\Admin\AppData\Local\Temp\18.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:4580
    • 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:2244
      • 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:4172
    • 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:2116
      • 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:2980
        • 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:3884
          • 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:1032
            • 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:3172
          • \??\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:4976
            • 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:4800
              • 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:1792
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:712
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ppxshebgxim"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:3824
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rjdlhxlilqesfrv"
                6⤵
                  PID:4552
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rjdlhxlilqesfrv"
                  6⤵
                    PID:4984
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rjdlhxlilqesfrv"
                    6⤵
                    • Accesses Microsoft Outlook accounts
                    • System Location Discovery: System Language Discovery
                    PID:3228
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\blivapwbzywxpxjfbb"
                    6⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4584
                  • C:\Windows\SysWOW64\WScript.exe
                    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\mrqanytkiecceczgofpakmvlbomlzlnmxj.vbs"
                    6⤵
                    • System Location Discovery: System Language Discovery
                    PID:3368

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\files\scvhost.exe

          Filesize

          469KB

          MD5

          6d24df24ca53f7c976d8d8bccc03777a

          SHA1

          af23e6773c088cc55d32bcc6a23b637a5d3b8ff9

          SHA256

          d1dd4f16d4b190d9fa1310fa43168659ab3586bdaf20e89363043d99d9e2a954

          SHA512

          9935213e36576677a7e2332be05557e56f50828779f32343ca5dec7f2f413e1c7624b33bd6340ec465d45e3f031717a988797763a6cdad1f1c9632db308cb397

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

          Filesize

          502B

          MD5

          672f3741bd18e07f08f235fe1d210549

          SHA1

          078678ebdffa644203d11cb3f77bb139807d8fd8

          SHA256

          b9e7370d1268f9158566a32e621af01cf982b09ede5ba3b6237997dd9307d32b

          SHA512

          2b108d1b73d10364060728114aca217a345b245bc45c5cbf24941022bd02b4f5119cf68d0cf44788b8eb91d34e798e06a6bca301e2b00293ffc8396ff127e583

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

          Filesize

          528B

          MD5

          3478bb3d9b1528548baa4ee1de04d269

          SHA1

          92c19b97cd135f38d5964bc079df412a20358927

          SHA256

          684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

          SHA512

          84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

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

          Filesize

          4KB

          MD5

          ac300aeaf27709e2067788fdd4624843

          SHA1

          e98edd4615d35de96e30f1a0e13c05b42ee7eb7b

          SHA256

          d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9

          SHA512

          09c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df

        • memory/712-15-0x0000000000920000-0x000000000099F000-memory.dmp

          Filesize

          508KB

        • memory/712-14-0x0000000000920000-0x000000000099F000-memory.dmp

          Filesize

          508KB

        • memory/3228-26-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3228-28-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3228-25-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3824-23-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3824-27-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3824-24-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4584-29-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4584-30-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4584-34-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4976-18-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-38-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-20-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-19-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-17-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-16-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-12-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-37-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-10-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-22-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-39-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-42-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-43-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-44-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-45-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-46-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-50-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB

        • memory/4976-9-0x0000000001300000-0x000000000137F000-memory.dmp

          Filesize

          508KB