Analysis

  • max time kernel
    179s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2024, 14:00

General

  • Target

    Nro. de comprobante 0000062221 TRANSAFERENCIA OCTUBRE 21 DE 2024.exe

  • Size

    2.8MB

  • MD5

    b4e6c9db13a14697cb9eb9ef5f2c27c2

  • SHA1

    1015229197790844ed149e1c3066647016299163

  • SHA256

    68c75ba3fb131fa8d015169c3dd717f1b79cf2688fe87c87695ba9e04df87695

  • SHA512

    bb9920b1fa19a6bdb616a70526e3eb5090b4225394ac2c3858237d2746b304e15273dee5b10166417924acc38d65ab009243c8bab47aeacff3024d71cc919b0a

  • SSDEEP

    49152:1TJvoJ67eQD9rSlwthuDZzjz4YVw/ehjzEWZ80sgQOvfRmEmNixi43:1TJvn1udzjz4YPhXEWGDAiq

Malware Config

Extracted

Family

remcos

Botnet

BUROCRACIA

C2

solumintir.duckdns.org:1994

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-NCJKEB

  • 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.

  • 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\Nro. de comprobante 0000062221 TRANSAFERENCIA OCTUBRE 21 DE 2024.exe
    "C:\Users\Admin\AppData\Local\Temp\Nro. de comprobante 0000062221 TRANSAFERENCIA OCTUBRE 21 DE 2024.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3608
    • C:\Users\Admin\AppData\Local\Temp\Nro. de comprobante 0000062221 TRANSAFERENCIA OCTUBRE 21 DE 2024.exe
      "C:\Users\Admin\AppData\Local\Temp\Nro. de comprobante 0000062221 TRANSAFERENCIA OCTUBRE 21 DE 2024.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    f2289e5cbea3e8ba3983375bbb379372

    SHA1

    b94ab6a5ad1c2cda3d71fdbf7f9fb2d21e7fcf74

    SHA256

    464a5c244413f2ae2bf318a66522042ee038adb90cc3caa5d485cd56643e1bcd

    SHA512

    b2a88bd9e98700519360a7c4116f80a3faaccadb805e70592fc868e75b651d6b6191b35b497e39ce7fd70ce0ab21aa970d80af04ff122afe7a4865d4b09308d4

  • memory/3344-16-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-43-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-67-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-7-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-19-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-12-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-66-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-13-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-59-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-17-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3344-58-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-18-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-42-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-34-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-11-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-20-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-21-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-27-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3344-26-0x00000000006E0000-0x0000000000762000-memory.dmp

    Filesize

    520KB

  • memory/3608-24-0x0000000000409000-0x0000000000421000-memory.dmp

    Filesize

    96KB

  • memory/3608-0-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-4-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-3-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-5-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-6-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-10-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB

  • memory/3608-1-0x0000000000409000-0x0000000000421000-memory.dmp

    Filesize

    96KB

  • memory/3608-8-0x0000000000400000-0x00000000006DE000-memory.dmp

    Filesize

    2.9MB