Analysis

  • max time kernel
    300s
  • max time network
    297s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/10/2026, 15:49

General

  • Target
    260513_QT-AD-01.exe
  • Size 1.2MB
  • Sample261027-s9phcse18m
  • SHA256 424e2957ad337d860c7353d6aa74abbf3608410d543acc76c91603bcf0d66466
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 7.3.1 Pro

Botnet
  • RemoteHost

C2
  • 95.211.45.43:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-W5WW3T

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Family: Remcos

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

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: MapViewOfSection 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe
    "C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe
      "C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe"
      2⤵
        PID:3668
      • C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe
        "C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        PID:2540
        • C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe
          "C:\Users\Admin\AppData\Local\Temp\260513_QT-AD-01.exe"
          3⤵
            PID:3964

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            logs.dat

            • Path C:\ProgramData\remcos\logs.dat
            • Size 102B
            • SHA256 563bbd3b93376a0b303fae132c4fe6070f78fa9979d37edeb62353fd9f3a4765
            • MD5 SHA1 SHA512 TLSH

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nslA8A6.tmp\System.dll
            • Size 12KB
            • SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2296-12-0x0000000005140000-0x000000000781E000-memory.dmp

            memory/2296-13-0x0000000073E95000-0x0000000073E96000-memory.dmp

            memory/2296-15-0x0000000005140000-0x000000000781E000-memory.dmp

            memory/2540-33-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-54-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-34-0x0000000035C80000-0x0000000035D77000-memory.dmp

            memory/2540-38-0x0000000035C80000-0x0000000035D77000-memory.dmp

            memory/2540-37-0x0000000035C80000-0x0000000035D77000-memory.dmp

            memory/2540-39-0x0000000001780000-0x0000000003E5E000-memory.dmp

            memory/2540-42-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-14-0x0000000001780000-0x0000000003E5E000-memory.dmp

            memory/2540-45-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-48-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-51-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-28-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-57-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-60-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-63-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-66-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-78-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-81-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-84-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-105-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-108-0x0000000000490000-0x0000000001776000-memory.dmp

            memory/2540-111-0x0000000000490000-0x0000000001776000-memory.dmp