Analysis

  • max time kernel
    143s
  • max time network
    115s
  • 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

    13.exe

  • Size

    469KB

  • MD5

    cb9d1f7b29aaab52cf61252c69578ce5

  • SHA1

    bef7b00d16ff93aa85693ac563c9391300d439c9

  • SHA256

    0d2bb41bc116b49cb24b4b19c4ea0ab07d195123e2cb341628e09f798d3b04c0

  • SHA512

    c75689d459f8f9d927be23d692d7a0f772d0b37bba1f5dba13f51b8d6f71a4b3a9c3d36640d727c5e870533e732c61948bb2610fee40d91b367f3720422a890c

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSEn9:uiLJbpI7I2WhQqZ7E9

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-02QWRT

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\13.exe
    "C:\Users\Admin\AppData\Local\Temp\13.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:440
    • 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:4744
      • 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:2808
    • 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:2848
      • 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:2068
        • 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:1780
          • 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:1188
            • 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:3508
          • \??\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:1856
            • 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:1800
              • 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:528
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:1920
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgpbnwiyccnlcomwxhvvarttqurhl"
                6⤵
                  PID:1908
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgpbnwiyccnlcomwxhvvarttqurhl"
                  6⤵
                    PID:4972
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgpbnwiyccnlcomwxhvvarttqurhl"
                    6⤵
                      PID:3384
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgpbnwiyccnlcomwxhvvarttqurhl"
                      6⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: EnumeratesProcesses
                      PID:5048
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\macuoptzqkfqeuiagrqwleocqiaqmolo"
                      6⤵
                      • Accesses Microsoft Outlook accounts
                      • System Location Discovery: System Language Discovery
                      PID:2332
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wdimo"
                      6⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2676
                    • C:\Windows\SysWOW64\WScript.exe
                      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\xgdytphirxldbhxcbw.vbs"
                      6⤵
                      • System Location Discovery: System Language Discovery
                      PID:3892

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\files\scvhost.exe

            Filesize

            469KB

            MD5

            cb9d1f7b29aaab52cf61252c69578ce5

            SHA1

            bef7b00d16ff93aa85693ac563c9391300d439c9

            SHA256

            0d2bb41bc116b49cb24b4b19c4ea0ab07d195123e2cb341628e09f798d3b04c0

            SHA512

            c75689d459f8f9d927be23d692d7a0f772d0b37bba1f5dba13f51b8d6f71a4b3a9c3d36640d727c5e870533e732c61948bb2610fee40d91b367f3720422a890c

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

            Filesize

            502B

            MD5

            fde0d206864c6c4fe4ce4bc71ed214df

            SHA1

            07fbeab26ee01af7c42cbaabda93dbee05fd4eed

            SHA256

            67010bf09defc6584126a803d5c8e649657ec5ebbc00c4b2d83eeef2b502838f

            SHA512

            9b06a544b2b289709b27e384e5767957a1faaf84a47ca39db6fb658862f05a47031708e7896ccda776d6033e19b7b376b151c86f7573e99076faa057a5e42d1b

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

            Filesize

            4KB

            MD5

            17eece3240d08aa4811cf1007cfe2585

            SHA1

            6c10329f61455d1c96e041b6f89ee6260af3bd0f

            SHA256

            7cc0db44c7b23e4894fe11f0d8d84b2a82ad667eb1e3504192f3ba729f9a7903

            SHA512

            a7de8d6322410ec89f76c70a7159645e8913774f38b84aafeeeb9f90dc3b9aa74a0a280d0bb6674790c04a8ff2d059327f02ebfda6c4486778d53b7fc6da6370

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

            Filesize

            528B

            MD5

            3478bb3d9b1528548baa4ee1de04d269

            SHA1

            92c19b97cd135f38d5964bc079df412a20358927

            SHA256

            684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

            SHA512

            84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

          • memory/1856-39-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-40-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-9-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-16-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-17-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-18-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-19-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-20-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-22-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-51-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-46-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-45-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-44-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-42-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-43-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-41-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-38-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-10-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-11-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1856-37-0x0000000000700000-0x000000000077F000-memory.dmp

            Filesize

            508KB

          • memory/1920-14-0x0000000000650000-0x00000000006CF000-memory.dmp

            Filesize

            508KB

          • memory/1920-15-0x0000000000650000-0x00000000006CF000-memory.dmp

            Filesize

            508KB

          • memory/2332-30-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/2332-27-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/2332-24-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/2676-25-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2676-26-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2676-28-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/5048-29-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/5048-31-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/5048-23-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB