Analysis

  • max time kernel
    140s
  • max time network
    128s
  • 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

    28.exe

  • Size

    469KB

  • MD5

    48f6ed471a143ec2828abef5f829feef

  • SHA1

    555b7dacda983ff37e1c91f5cb1fe9e73509df12

  • SHA256

    d872ee79caa9d8507f59c0d5470119b0b55d4d7ddb9bb58b9ac149fe83ee1b4e

  • SHA512

    0dc46dc03db985377044f0c010437092cd9bff02eb7d6b889c9bbe2e860c9374f1f1d13c1f05e178c0a5842e0cc356817e5e852ecc5ba23087c9ad96f9beb65f

  • SSDEEP

    12288:Omnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS5n9:2iLJbpI7I2WhQqZ759

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-8ZXNE6

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\28.exe
    "C:\Users\Admin\AppData\Local\Temp\28.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:4620
    • 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:2796
      • 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:2296
    • 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:1448
      • 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:4636
        • 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:1460
          • 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:4996
            • 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:424
          • \??\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:1168
            • 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:2812
              • 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:3548
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:852
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ketambykdlyuliqrufsthqliheuoiko"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:3528
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uzysntrlrtqzwoedlifnkdgrilexjufejv"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:3920
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ebllol"
                6⤵
                  PID:2968
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ebllol"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1160
                • C:\Windows\SysWOW64\WScript.exe
                  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tenxzjsahvenoxjzjxfzkgsfsyiipgcxzk.vbs"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  PID:1888

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\files\scvhost.exe

        Filesize

        469KB

        MD5

        48f6ed471a143ec2828abef5f829feef

        SHA1

        555b7dacda983ff37e1c91f5cb1fe9e73509df12

        SHA256

        d872ee79caa9d8507f59c0d5470119b0b55d4d7ddb9bb58b9ac149fe83ee1b4e

        SHA512

        0dc46dc03db985377044f0c010437092cd9bff02eb7d6b889c9bbe2e860c9374f1f1d13c1f05e178c0a5842e0cc356817e5e852ecc5ba23087c9ad96f9beb65f

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

        Filesize

        502B

        MD5

        d34eac740938c5b09fc681d9cee4cb91

        SHA1

        4a84c3030663c7dc1e4f996cd58746d1c922b43a

        SHA256

        61421e88e9f41b4fd2288bdcf96638089702275404a653f4c319ae1ef9dc8189

        SHA512

        9d3762b71ddce23af1029d69b6c50ed72ec1b1e3a1ed97ca6c2c8633a9be6ffba26dbf5f16c577a744f47414325a880094bbb6fbc40d83b9832aff120c995dfb

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

        Filesize

        4KB

        MD5

        75379d3dcbcea6a69bc75b884816dd40

        SHA1

        7e073a03c3bdbbc60375ddbe56bba211c3d412a6

        SHA256

        cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

        SHA512

        710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

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

        Filesize

        528B

        MD5

        3478bb3d9b1528548baa4ee1de04d269

        SHA1

        92c19b97cd135f38d5964bc079df412a20358927

        SHA256

        684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

        SHA512

        84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

      • memory/852-14-0x00000000012C0000-0x000000000133F000-memory.dmp

        Filesize

        508KB

      • memory/852-15-0x00000000012C0000-0x000000000133F000-memory.dmp

        Filesize

        508KB

      • memory/1160-31-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1160-26-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1160-30-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1168-38-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-42-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-20-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-22-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-9-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-49-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-45-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-44-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-18-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-17-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-43-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-16-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-19-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-11-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-37-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-10-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-39-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-40-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/1168-41-0x0000000000D80000-0x0000000000DFF000-memory.dmp

        Filesize

        508KB

      • memory/3528-28-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3528-25-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3528-23-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3920-27-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3920-29-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3920-24-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB