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Analysis

  • max time kernel
    177s
  • max time network
    165s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09/10/2024, 22:28

General

  • Target

    OFICIO 002394939249 TESORERIA No. 0399498-002024.exe

  • Size

    4.9MB

  • MD5

    cbdd93c0f2fdc3549188bad11af2cbb6

  • SHA1

    bb8023707452a17e8236cae8d2e7a11cc0ec8c1d

  • SHA256

    8aa24e0acffe7459f0662e8f3852fc34ed65a6e05cd468bdbc4c7a30c480a169

  • SHA512

    8cfcdee2366f3d7e276070e7a353346600f58da66c4dbe940a8db58a5b1b6c1bea91fac7fd6a99b8db7a9e3bc09f2b491807e2af91b1aba6b16631a15f41a919

  • SSDEEP

    49152:GSq2zkGQxfkScRd2j4309+eZypv0rMHul1gUuu9blTeYbkqFTckW4lLFQoMHMZKB:GStzEx9xypvogUuuhkYbkqFWCMojwH

Malware Config

Extracted

Family

remcos

Botnet

OCTU

C2

segurosbolivar24.con-ip.com:2006

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

    registros.dat

  • keylog_flag

    false

  • keylog_folder

    regist

  • mouse_option

    false

  • mutex

    ljnghvfghujkvgnasftnz-X8YJ1F

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Capturas de pantalla

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
    "C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2540
    • C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
      "C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\regist\registros.dat

    Filesize

    184B

    MD5

    377e62ff582d7d9446fa1721c02d287a

    SHA1

    6ae48b4df6e04d424a70c4d7d0021349fc5bbb82

    SHA256

    0b444bdf014dc38a480c0c4db6979362e5f73124b1292eac246ca3eea8c45f0d

    SHA512

    cf3096b6171b094ddd61272b0bfdcec6277125a9cf5b72f04008b15990775ac9fd8d36e14c1450b2f913d5d7014bbbe98500029478abe3e0b318d1f8357c13cc

  • memory/2408-12-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-21-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-8-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-17-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-68-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-69-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-60-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-52-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-25-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-23-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-22-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2408-18-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-53-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-44-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-37-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-36-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2408-24-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2408-26-0x00000000001C0000-0x0000000000242000-memory.dmp

    Filesize

    520KB

  • memory/2540-14-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-2-0x0000000000514000-0x000000000052D000-memory.dmp

    Filesize

    100KB

  • memory/2540-30-0x0000000000514000-0x000000000052D000-memory.dmp

    Filesize

    100KB

  • memory/2540-1-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-0-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-13-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-4-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-5-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-7-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2540-15-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB