Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/04/2024, 08:20

General

  • Target
    Quotation.exe
  • Size 1.4MB
  • Sample240402-j8fpdscb73
  • SHA256 ca52caeb15fde0f171362e3e7771edecc44f2e582cccaa0fedbd6012669076d7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • shgoini.com:30902

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-7XHN5V

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Users\Admin\AppData\Local\directory\excel.exe
      "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1084
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
        3⤵
          PID:4164
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1304 --field-trial-handle=2256,i,18272763564106695635,11201593968620719822,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2492

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            ambiparous

            • Path C:\Users\Admin\AppData\Local\Temp\ambiparous
            • Size 483KB
            • SHA256 f59b9e90acdbe2a0cc3e5e66bb3214adb7506fc775b8264e36e408a21decfba0
            • MD5 SHA1 SHA512 SSDEEP

            intersentimental

            • Path C:\Users\Admin\AppData\Local\Temp\intersentimental
            • Size 29KB
            • SHA256 61616629bc83442de66185fb8a8b3ed37d4fc690d473e28cf570527a5db7d456
            • MD5 SHA1 SHA512 SSDEEP

            excel.exe

            • Path C:\Users\Admin\AppData\Local\directory\excel.exe
            • Size 105.4MB
            • SHA256 18a02d041dba1591ebf60550033fb7d38b8e0ed699b9941e6da868baed145235
            • MD5 SHA1 SHA512 SSDEEP

            memory/2776-10-0x00000000020F0000-0x00000000020F4000-memory.dmp

            memory/4164-34-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-39-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-30-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-31-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-32-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-33-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-28-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-35-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-36-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-29-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-40-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-41-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-42-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-43-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-44-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-46-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4164-47-0x0000000000400000-0x0000000000482000-memory.dmp