Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 09:30

General

  • Target

    HTQ19-P0401-Q0539 NE-Q22940 GR2P5 TYPBLDG-NASER AL FERDAN.exe

  • Size

    412KB

  • MD5

    8c359e6a1e069354f3c7ceb5457157e6

  • SHA1

    b1d305325bdf240f374de2f10932db83290199ff

  • SHA256

    598fbc003f3775d3441846dec51317b6e81422a78c9a0d1b53353025d6953175

  • SHA512

    98292df3fdc144f80b0e5c0f767323c65b1284a2adc282c528428f80b0b4045d50fa8f168c7bec9541e62b11548c177a552bd5d49f62ebf0a6a2174df234a613

  • SSDEEP

    6144:wqM0Y9PoTx4xOm6FylOUunSxIbshHuYxE17ACbPTvPCd7oPhUumf:MiW85S2boHuY217AyvPKUPm

Malware Config

Extracted

Family

remcos

Version

3.0.1 Pro

Botnet

RemoteHost

C2

capriteam.ddns.net:1010

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-VHHYND

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

  • 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 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HTQ19-P0401-Q0539 NE-Q22940 GR2P5 TYPBLDG-NASER AL FERDAN.exe
    "C:\Users\Admin\AppData\Local\Temp\HTQ19-P0401-Q0539 NE-Q22940 GR2P5 TYPBLDG-NASER AL FERDAN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Users\Admin\AppData\Local\Temp\HTQ19-P0401-Q0539 NE-Q22940 GR2P5 TYPBLDG-NASER AL FERDAN.exe
      "C:\Users\Admin\AppData\Local\Temp\HTQ19-P0401-Q0539 NE-Q22940 GR2P5 TYPBLDG-NASER AL FERDAN.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4332
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Checks computer location settings
        • Deletes itself
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:708
          • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4148
            • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
              "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:4072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    644B

    MD5

    f0d01340e5c004f05ecd705538a911a6

    SHA1

    0f06aa4c4ac3c72fb8572f61a6dfeef86cb4a483

    SHA256

    0a71a6582d07e6832f82d6b4b3f4e4307bceebd5d82cee232570bee0c04c8a32

    SHA512

    a22f49628786978e3b1a6ac94cb87303c110669544c34ebb9521e8611cb98989a3949b2c892a25707c7471f7c9843bb06f850c404a429886723f6d05ab0c2862

  • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe

    Filesize

    412KB

    MD5

    8c359e6a1e069354f3c7ceb5457157e6

    SHA1

    b1d305325bdf240f374de2f10932db83290199ff

    SHA256

    598fbc003f3775d3441846dec51317b6e81422a78c9a0d1b53353025d6953175

    SHA512

    98292df3fdc144f80b0e5c0f767323c65b1284a2adc282c528428f80b0b4045d50fa8f168c7bec9541e62b11548c177a552bd5d49f62ebf0a6a2174df234a613

  • memory/4072-38-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-41-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-31-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4072-32-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-44-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-42-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-35-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-33-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-39-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-37-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-29-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4072-36-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-45-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-40-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4072-34-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4332-17-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4332-6-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4332-20-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4332-5-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4332-13-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4332-14-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4332-7-0x0000000000400000-0x000000000047C000-memory.dmp

    Filesize

    496KB

  • memory/4980-3-0x0000000000A90000-0x0000000000A91000-memory.dmp

    Filesize

    4KB

  • memory/4980-2-0x00000000779C2000-0x00000000779C3000-memory.dmp

    Filesize

    4KB

  • memory/4980-4-0x0000000000AA0000-0x0000000000AA6000-memory.dmp

    Filesize

    24KB

  • memory/4980-12-0x0000000000AA0000-0x0000000000AA6000-memory.dmp

    Filesize

    24KB