Analysis

  • max time kernel
    149s
  • max time network
    136s
  • 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, 09:03

General

  • Target

    22.exe

  • Size

    469KB

  • MD5

    ea99efb202c5625280d0d4140c2cdeee

  • SHA1

    5cf3bb2872c7c46725e9e236f8bead59a8786a55

  • SHA256

    6823bc23bae3dcceee8b122d5ab49c71adc32f5f8cbfaddd0f6e361dd5be17f3

  • SHA512

    bde3e441ff858872069d236a292313883ca3698e49b821af2a805b82e1e861ac9af5235d61db795fe47b5b97e11a687ef5fa8cdd8dc709ba63f6e595cf265537

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSKn9:uiLJbpI7I2WhQqZ7K9

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-W50V3W

  • 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 14 IoCs

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

  • Modifies registry class 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\22.exe
    "C:\Users\Admin\AppData\Local\Temp\22.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:4940
    • 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:3660
      • 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:2208
    • 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:3364
      • 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:3464
        • 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:1380
          • 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:628
            • 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:1484
          • \??\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
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3100
            • 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:5052
              • 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:948
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:928
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\osveugcqgwdismgkkuwhicypppsfwgrvve"
                6⤵
                  PID:4764
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\osveugcqgwdismgkkuwhicypppsfwgrvve"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2120
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ruapvqn"
                  6⤵
                  • Accesses Microsoft Outlook accounts
                  • System Location Discovery: System Language Discovery
                  PID:3616
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\bogiwjylim"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4364

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\files\scvhost.exe

        Filesize

        469KB

        MD5

        ea99efb202c5625280d0d4140c2cdeee

        SHA1

        5cf3bb2872c7c46725e9e236f8bead59a8786a55

        SHA256

        6823bc23bae3dcceee8b122d5ab49c71adc32f5f8cbfaddd0f6e361dd5be17f3

        SHA512

        bde3e441ff858872069d236a292313883ca3698e49b821af2a805b82e1e861ac9af5235d61db795fe47b5b97e11a687ef5fa8cdd8dc709ba63f6e595cf265537

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

        Filesize

        502B

        MD5

        7e40e446594854230c1ddecf4ffc8826

        SHA1

        62c2a9a1dbc83ec42cf4e77ab62f9e01f40a4a44

        SHA256

        5a7340d452f337b7a86f3f4469c0249a2c2ed0de0b919bc913fe814452b6170d

        SHA512

        afeca4ed80c8f6e16867eface7c250d1c5effadf06007a49ac35e435f16dcdfbda307f3bff88f796f571abca198546db3dea37613defe51ebe0cd5463fd7be74

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

        Filesize

        4KB

        MD5

        7aca43b2800ceb18b3ed2326532545de

        SHA1

        d4cf207ef85bd749d59c1cb27a09c167ee21523a

        SHA256

        3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

        SHA512

        0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

      • memory/928-14-0x0000000000670000-0x00000000006EF000-memory.dmp

        Filesize

        508KB

      • memory/928-15-0x0000000000670000-0x00000000006EF000-memory.dmp

        Filesize

        508KB

      • memory/2120-23-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2120-29-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2120-26-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3100-16-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-45-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-20-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-19-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-22-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-17-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-18-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-38-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-44-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-11-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-41-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-40-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-39-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-10-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-9-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3100-37-0x0000000000600000-0x000000000067F000-memory.dmp

        Filesize

        508KB

      • memory/3616-24-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3616-30-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3616-27-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/4364-31-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4364-28-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4364-25-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB