Analysis

  • max time kernel
    149s
  • max time network
    155s
  • 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

    17.exe

  • Size

    469KB

  • MD5

    44ac1dfd7a50938d27a187cfd2d1d6f6

  • SHA1

    8b4b107f3c89e6882ece16ab4d41518131c4d57f

  • SHA256

    81fc8c39bd528cc4254d93f3f3c5757bae4a05f34cbd8a48d851b9197cbafe75

  • SHA512

    9247522fdf1f4e5d389f6068f87cb6d0205e9b16a34f21181be18003643f704a6ea222532d7186404ae628011f4674e72c598d31a4b3ae6f00e0f2d07929281e

  • 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-G606WF

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\17.exe
    "C:\Users\Admin\AppData\Local\Temp\17.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:2556
    • 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:4688
      • 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:4092
    • 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:4796
      • 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:508
        • 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:1464
          • 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:4240
            • 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:4900
          • \??\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:3916
            • 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:2956
              • 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:3324
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:4516
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\pmnfyliys"
                6⤵
                  PID:3180
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\pmnfyliys"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3568
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zgtyzesrobpx"
                  6⤵
                  • Accesses Microsoft Outlook accounts
                  • System Location Discovery: System Language Discovery
                  PID:4224
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kigiswdtcjhkael"
                  6⤵
                    PID:2056
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kigiswdtcjhkael"
                    6⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3724
                  • C:\Windows\SysWOW64\WScript.exe
                    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\kutywerypzjzwwvok.vbs"
                    6⤵
                    • System Location Discovery: System Language Discovery
                    PID:2148

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\files\scvhost.exe

          Filesize

          469KB

          MD5

          44ac1dfd7a50938d27a187cfd2d1d6f6

          SHA1

          8b4b107f3c89e6882ece16ab4d41518131c4d57f

          SHA256

          81fc8c39bd528cc4254d93f3f3c5757bae4a05f34cbd8a48d851b9197cbafe75

          SHA512

          9247522fdf1f4e5d389f6068f87cb6d0205e9b16a34f21181be18003643f704a6ea222532d7186404ae628011f4674e72c598d31a4b3ae6f00e0f2d07929281e

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

          Filesize

          502B

          MD5

          d22a86431b49df3f057f86713e026959

          SHA1

          ba704133a7a33b4bed82a63982645b8c878acec1

          SHA256

          8f3ac671b60c13acd563b6db1c45dba6ae332430d6548d0ef571a089da7bced4

          SHA512

          d9fe1e4faaf817dc63802064adc7d167d6a0e62e2335b1bd227d860c77e9353c0799d2fe305c03f896eb4fe8e865d7248e9ff56c56fabfdf9b4c135b350ca839

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

          Filesize

          528B

          MD5

          3478bb3d9b1528548baa4ee1de04d269

          SHA1

          92c19b97cd135f38d5964bc079df412a20358927

          SHA256

          684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

          SHA512

          84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

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

          Filesize

          4KB

          MD5

          60a0bdc1cf495566ff810105d728af4a

          SHA1

          243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

          SHA256

          fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

          SHA512

          4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

        • memory/3568-23-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3568-25-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3568-27-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3724-30-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3724-31-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3724-29-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3916-19-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-39-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-22-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-9-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-17-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-58-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-18-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-54-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-16-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-53-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-52-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-10-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-11-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-37-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-38-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-20-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-40-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-41-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-43-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-42-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-44-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-45-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-46-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-48-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-49-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-47-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/3916-51-0x0000000000D00000-0x0000000000D7F000-memory.dmp

          Filesize

          508KB

        • memory/4224-26-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/4224-28-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/4224-24-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/4516-15-0x0000000000630000-0x00000000006AF000-memory.dmp

          Filesize

          508KB

        • memory/4516-14-0x0000000000630000-0x00000000006AF000-memory.dmp

          Filesize

          508KB