Resubmissions

21-12-2024 17:16

241221-vtc6hatpew 10

21-12-2024 17:14

241221-vseb6strcn 10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    21-12-2024 17:16

General

  • Target

    WaveSourceInstaller.exe

  • Size

    469KB

  • MD5

    e468b718e67495ea73c85d8258059adf

  • SHA1

    dcad70f5c39ab85f900ef1288067dbf51eaeb503

  • SHA256

    fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

  • SHA512

    b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSJn9:uiLJbpI7I2WhQqZ7J9

Malware Config

Extracted

Family

remcos

Botnet

WaveSourceLeaked

C2

204.10.194.175:4444

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • 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-46FS9Q

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 59 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WaveSourceInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\WaveSourceInstaller.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3144
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3704
        • C:\ProgramData\Remcos\remcos.exe
          C:\ProgramData\Remcos\remcos.exe
          4⤵
          • 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:3520
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
              PID:3600
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1796
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2116
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        1⤵
        • 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:1348
        • \??\c:\program files (x86)\internet explorer\iexplore.exe
          "c:\program files (x86)\internet explorer\iexplore.exe"
          2⤵
            PID:3800
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          1⤵
          • 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:1716
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            2⤵
              PID:2404

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\Remcos\remcos.exe

            Filesize

            469KB

            MD5

            e468b718e67495ea73c85d8258059adf

            SHA1

            dcad70f5c39ab85f900ef1288067dbf51eaeb503

            SHA256

            fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

            SHA512

            b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

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

            Filesize

            386B

            MD5

            1ec6289c6fd4c2ded6b2836ed28cbeb5

            SHA1

            c4e08195e6c640eb8860acc03fda1d649b4fe070

            SHA256

            6efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2

            SHA512

            20bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288

          • memory/1796-21-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-18-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-19-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-20-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-14-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-13-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-12-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-24-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-23-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/1796-22-0x000001ACB0090000-0x000001ACB0091000-memory.dmp

            Filesize

            4KB

          • memory/2404-59-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-50-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-77-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-76-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-75-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-74-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-29-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-30-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-31-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-32-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-33-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-34-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-35-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-36-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-37-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-38-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-39-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-40-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-41-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-42-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-43-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-44-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-45-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-46-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-47-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-48-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-49-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-73-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-51-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-52-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-53-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-54-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-55-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-56-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-57-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-58-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-72-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-60-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-61-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-62-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-63-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-64-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-65-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-66-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-67-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-68-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-69-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-70-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/2404-71-0x0000000000B50000-0x0000000000BCF000-memory.dmp

            Filesize

            508KB

          • memory/3600-9-0x0000000000510000-0x000000000058F000-memory.dmp

            Filesize

            508KB

          • memory/3600-10-0x0000000000510000-0x000000000058F000-memory.dmp

            Filesize

            508KB

          • memory/3600-8-0x0000000000510000-0x000000000058F000-memory.dmp

            Filesize

            508KB

          • memory/3600-11-0x0000000000510000-0x000000000058F000-memory.dmp

            Filesize

            508KB

          • memory/3800-27-0x0000000000F90000-0x000000000100F000-memory.dmp

            Filesize

            508KB

          • memory/3800-26-0x0000000000F90000-0x000000000100F000-memory.dmp

            Filesize

            508KB