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Analysis

  • max time kernel
    177s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 5 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:4392
    • 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:2428

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\regist\registros.dat

    Filesize

    184B

    MD5

    29c8b669c975877d5db9c0aaed0c98b3

    SHA1

    ac00e0ff6dabbd51766737ba77228215888e811b

    SHA256

    1be8b614ff14cf23122a5fb3b227f9408f8262615ea370c2e3f32fca3c670645

    SHA512

    a1e7d6f02e7c3bfc84711e2659584b29d4cadb74669998d033e626daeb0327b965fbb302a33a9d3e660e38625f771a8396acb1950e4e66888cdf1e0e237612e3

  • memory/2428-31-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-38-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-63-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-7-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-62-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-54-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-47-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-11-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-46-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-12-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-39-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-16-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-13-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-17-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-19-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-30-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-18-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/2428-21-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/2428-20-0x0000000000960000-0x00000000009E2000-memory.dmp

    Filesize

    520KB

  • memory/4392-25-0x0000000000514000-0x000000000052D000-memory.dmp

    Filesize

    100KB

  • memory/4392-0-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-2-0x0000000000514000-0x000000000052D000-memory.dmp

    Filesize

    100KB

  • memory/4392-4-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-5-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-8-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-6-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-10-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-1-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB

  • memory/4392-3-0x0000000000400000-0x0000000000955000-memory.dmp

    Filesize

    5.3MB