Analysis

  • max time kernel
    36s
  • max time network
    33s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 19:38

General

  • Target

    wave source.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 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 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.

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 38 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 46 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\wave source.exe
    "C:\Users\Admin\AppData\Local\Temp\wave source.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:2384
    • 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:4588
      • 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:3236
        • 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:1584
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:2272
            • C:\Windows\SysWOW64\WScript.exe
              "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\kcoihc.vbs"
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1176
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3312
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1512

    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

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

      Filesize

      530B

      MD5

      4bf0b2c52f93ba2aa4a14ea1f1a5dbd5

      SHA1

      38e30b5767c664848b87192c296086e061d6b751

      SHA256

      bf772d0e90a12ce4d3f868d210ce5dc748cb64ee1272b142e09c1d5ec64a2088

      SHA512

      cd7892bf06d4e4ee4a90b86fe6fdfb977e6fa6959dbb735e0d4e9a64f77c45fb238aa3ad44e9e583f50d060b5127c6931a69aa286c66cacb1e5b349d964edfe0

    • memory/2272-22-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-18-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-12-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-13-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-15-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-14-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-16-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-36-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-19-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-20-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-21-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-10-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-9-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-8-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-41-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/2272-37-0x0000000000B80000-0x0000000000BFF000-memory.dmp

      Filesize

      508KB

    • memory/3312-24-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-33-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-32-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-31-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-30-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-29-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-34-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-35-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-23-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB

    • memory/3312-25-0x000001CA4ED80000-0x000001CA4ED81000-memory.dmp

      Filesize

      4KB