Analysis

  • max time kernel
    149s
  • max time network
    156s
  • 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

    29.exe

  • Size

    469KB

  • MD5

    005e189f952f414b57eb0b5dc2af0972

  • SHA1

    eacffecece329fe6fcc1d27901b162eafc53ead4

  • SHA256

    7a44e3ba02c24ae328d039071c736662b0739e15046c4dec11f4ad575e71b657

  • SHA512

    50b414a5649c1b619ecc104abc83fd3f4f115c01642166b375427855852608f4f89a0ebe97ddb8a1e6e6d24cf5edab6dd9744d28f664dfc6ff8db144eb8aaf55

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS/n9:uiLJbpI7I2WhQqZ7/9

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-ZHBSO9

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\29.exe
    "C:\Users\Admin\AppData\Local\Temp\29.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:4200
    • 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:4340
      • 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:864
    • 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:2308
      • 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:2720
        • 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:3972
          • 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:4352
            • 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:4740
          • \??\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:4184
            • 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:208
              • 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:2432
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:4520
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rdqgzgfqnwtdtevcyqzhuszwrhkzodgx"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:760
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\bfvy"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:3636
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mabjbibm"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3832
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\pfjogrpupsjaudvumqmesyfr.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:2680

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      005e189f952f414b57eb0b5dc2af0972

      SHA1

      eacffecece329fe6fcc1d27901b162eafc53ead4

      SHA256

      7a44e3ba02c24ae328d039071c736662b0739e15046c4dec11f4ad575e71b657

      SHA512

      50b414a5649c1b619ecc104abc83fd3f4f115c01642166b375427855852608f4f89a0ebe97ddb8a1e6e6d24cf5edab6dd9744d28f664dfc6ff8db144eb8aaf55

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

      Filesize

      502B

      MD5

      d58eb80eab68fc757a8478648f4c2c55

      SHA1

      c7bdb05eb93971e3d0b09173db8a747c1366a116

      SHA256

      c5dd31a2a87d974738cf7df942edd9f0e8de6adaee4a06e66e993ac4d8e93f22

      SHA512

      663bf6df09b24b68843c239d1fd3e230502d5c69886176dd11300cf91aa66adb435f0ff3718f1581ef20d81303133d96d0aedd3c44aa99511ecaae13e7b09acb

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

      Filesize

      528B

      MD5

      3478bb3d9b1528548baa4ee1de04d269

      SHA1

      92c19b97cd135f38d5964bc079df412a20358927

      SHA256

      684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

      SHA512

      84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

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

      Filesize

      4KB

      MD5

      562a58578d6d04c7fb6bda581c57c03c

      SHA1

      12ab2b88624d01da0c5f5d1441aa21cbc276c5f5

      SHA256

      ff5c70287ba432a83f9015209d6e933462edca01d68c53c09882e1e4d22241c8

      SHA512

      3f6e19faa0196bd4c085defa587e664abdd63c25ef30df8f4323e60a5a5aca3cd2709466f772e64ab00fe331d4264841422d6057451947f3500e9252a132254e

    • memory/760-31-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/760-23-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/760-30-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3636-25-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3636-24-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3636-28-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3832-26-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3832-27-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3832-29-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4184-17-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-43-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-19-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-20-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-18-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-16-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-9-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-50-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-11-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-10-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-37-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-38-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-39-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-40-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-41-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-42-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-22-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-44-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-45-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4184-46-0x0000000000A10000-0x0000000000A8F000-memory.dmp

      Filesize

      508KB

    • memory/4520-14-0x0000000001030000-0x00000000010AF000-memory.dmp

      Filesize

      508KB

    • memory/4520-15-0x0000000001030000-0x00000000010AF000-memory.dmp

      Filesize

      508KB