Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2024, 09:03

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
  • 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\18.exe
    "C:\Users\Admin\AppData\Local\Temp\18.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:2356
    • 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:2056
      • 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:2040
    • 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:596
      • 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:2860
        • 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:2908
          • 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:2736
            • 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:2232
          • \??\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:3044
            • 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:2468
              • 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:2796
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2660
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zzxzeoclhrajbgjjehxv"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2752
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\cbcrfhnfvzsolmfvoskwgax"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:2280
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mvhkgzygrhkbostzfceqrmktyl"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:1300

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      502B

      MD5

      672f3741bd18e07f08f235fe1d210549

      SHA1

      078678ebdffa644203d11cb3f77bb139807d8fd8

      SHA256

      b9e7370d1268f9158566a32e621af01cf982b09ede5ba3b6237997dd9307d32b

      SHA512

      2b108d1b73d10364060728114aca217a345b245bc45c5cbf24941022bd02b4f5119cf68d0cf44788b8eb91d34e798e06a6bca301e2b00293ffc8396ff127e583

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • \ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      6d24df24ca53f7c976d8d8bccc03777a

      SHA1

      af23e6773c088cc55d32bcc6a23b637a5d3b8ff9

      SHA256

      d1dd4f16d4b190d9fa1310fa43168659ab3586bdaf20e89363043d99d9e2a954

      SHA512

      9935213e36576677a7e2332be05557e56f50828779f32343ca5dec7f2f413e1c7624b33bd6340ec465d45e3f031717a988797763a6cdad1f1c9632db308cb397

    • memory/1300-33-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1300-35-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1300-36-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2280-37-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2280-34-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2280-30-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2660-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2660-17-0x00000000000C0000-0x000000000013F000-memory.dmp

      Filesize

      508KB

    • memory/2660-18-0x00000000000C0000-0x000000000013F000-memory.dmp

      Filesize

      508KB

    • memory/2752-28-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2752-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2752-27-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2752-31-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3044-25-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-11-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-12-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-23-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-22-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-21-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-20-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-19-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/3044-13-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-43-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-44-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-45-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-46-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-47-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-48-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-49-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-50-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB

    • memory/3044-51-0x0000000000250000-0x00000000002CF000-memory.dmp

      Filesize

      508KB