Overview

overview

10

Static

static

3

formulario_citas.msi

windows10-2004-x64

10

formulario_citas.msi

windows11-ltsc_2024-x64

10

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General

  • Target
    formulario_citas.zip
  • Size 3.1MB
  • Sample261104-yybd9azv6k
  • SHA256 153b680c6e905853853513a87f0c2aa146562866712b50c7a03c5b3a1008b718
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
hijackloaderremcosnoviembre 04 muchacha 2026defense_evasiondiscoveryloaderpersistenceprivilege_escalationransomwarerat

Malware Config

Extracted

Family

  • hijackloader

Attributes
  • directory

    %APPDATA%\SYS

  • inject_dll

    %windir%\SysWOW64\ieframe.dll

xor.hex

Extracted

Family

  • remcos

Botnet

  • NOVIEMBRE 04 MUCHACHA 2026

C2

  • servis.vidrisoctsa.com:5510

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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    niuytnsda

  • mouse_option

    false

  • mutex

    Rmc-VICOW1

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

  • remcos

Version

  • 7.3.1 Pro

Botnet

  • NOVIEMBRE 04 MUCHACHA 2026

C2

  • servis.vidrisoctsa.com:5510

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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    niuytnsda

  • mouse_option

    false

  • mutex

    Rmc-VICOW1

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      formulario_citas.msi
    • Size 3.1MB
    • SHA256 e9c7d3c756dbc68e76941911bc83a23d603e236b8eb696affb134d9aa4fd6267
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    noviembre 04 muchacha 2026defense_evasiondiscoveryhijackloaderremcosloaderpersistenceprivilege_escalationransomwarerat

    • Detects HijackLoader (aka IDAT Loader)

    • Family: HijackLoader, IDAT loader, Ghostulse,

      HijackLoader is a multi-stage loader, first seen in 2023.

      loaderhijackloader

    • Family: Remcos

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

      ratremcos

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks