Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2024, 09:03

General

  • Target

    23.exe

  • Size

    469KB

  • MD5

    68b1b3afe4f835f0152104fae7fc9af4

  • SHA1

    138e8548a38eaec24aec240daabe1ffef291bb23

  • SHA256

    4249998dd18957a8b104d1cb108271df9be27c745089c60a302445a659d68f9b

  • SHA512

    0dbbedbdd7944ca537121d58057249086b609a08af12c7ad26eb4b71b00e35cf7e243179c6cafe1c32b7ba550b4d82551fc97b2587823ef602cdc5de4f065ea3

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSFn9:uiLJbpI7I2WhQqZ7F9

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-9YU88S

  • 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
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23.exe
    "C:\Users\Admin\AppData\Local\Temp\23.exe"
    1⤵
    • Adds policy Run key to start application
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2068
    • 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:2400
      • 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:3052
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2348
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2764
        • 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:2828
          • 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:2960
            • 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:2780
          • \??\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:2772
            • 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:2884
              • 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:2708
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2656
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\aglrqlseubdpsxefbyrmocfk"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2684
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\caqkrvcfijvuclbjkjegzpsbrru"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:3020
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ncecsonzwsnherpnctrhcumksxmrlc"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:2672

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      502B

      MD5

      cddd541d1e8c56e12ce8cbeb8f27b5fa

      SHA1

      95c6ee2dc7b5fe2ce2390ee49e0b22e2e0ce2014

      SHA256

      1d49bb2b27f6d754137970711f70c3a28e002930c1a67d8403362fa30007aab9

      SHA512

      7f0087e387f5905451407b9915eb11755a976d48820b2ce18e91dd5b516b2faae205f2b2e41709ca1c0799f2489af5402f524caef5f25e32d584724608ba601f

    • \ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      68b1b3afe4f835f0152104fae7fc9af4

      SHA1

      138e8548a38eaec24aec240daabe1ffef291bb23

      SHA256

      4249998dd18957a8b104d1cb108271df9be27c745089c60a302445a659d68f9b

      SHA512

      0dbbedbdd7944ca537121d58057249086b609a08af12c7ad26eb4b71b00e35cf7e243179c6cafe1c32b7ba550b4d82551fc97b2587823ef602cdc5de4f065ea3

    • memory/2656-18-0x00000000000C0000-0x000000000013F000-memory.dmp

      Filesize

      508KB

    • memory/2656-17-0x00000000000C0000-0x000000000013F000-memory.dmp

      Filesize

      508KB

    • memory/2656-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2672-35-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2672-36-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2672-37-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2684-30-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2684-32-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2684-27-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2772-12-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-47-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-25-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-23-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-51-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-50-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-20-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-21-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2772-19-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-14-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-48-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-11-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-43-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-45-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-44-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-22-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-46-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/2772-49-0x00000000001F0000-0x000000000026F000-memory.dmp

      Filesize

      508KB

    • memory/3020-33-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3020-31-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3020-29-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB