Analysis

  • max time kernel
    64s
  • max time network
    65s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-09-2024 20:13

General

  • Target

    Oficio electrónico Cancelación de contrato 30 de septiembre.exe

  • Size

    894KB

  • MD5

    1d3139ed795f03b3a2cb411c618f30da

  • SHA1

    c9c9297bf7bbee2b8a7f4f8b0f8d7a8ef3f9bef6

  • SHA256

    21aa57e39d848dc9952c63ba19d5b3a885fb207fa168c63da49ae55f36bf5780

  • SHA512

    fa28836a274879ff6c66c2ee97c783a4bcabb387d827c226e27441a50de6817309d115fa2dfa4fc163ef81ebd799f5670e46f90a82a47b1c644bf253927a4683

  • SSDEEP

    24576:btLoVsoyvLPDF5EvJtLp4yG/oJHEXnb5:

Malware Config

Extracted

Family

remcos

Botnet

ZEPTA

C2

vuele45.con-ip.com:1836

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

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    asdsadfs

  • mouse_option

    false

  • mutex

    cbbanshhd-TXKEZD

  • 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3420
      • C:\Users\Admin\AppData\Local\Temp\Oficio electrónico Cancelación de contrato 30 de septiembre.exe
        "C:\Users\Admin\AppData\Local\Temp\Oficio electrónico Cancelación de contrato 30 de septiembre.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4092
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\asdsadfs\logs.dat

      Filesize

      144B

      MD5

      78da7e80bd3a65a07ce241ec01a4ea8b

      SHA1

      c5abe0195bcdb965c629b1520516f02008268eb3

      SHA256

      b1bade17d5974e59c4d59a7af5151723a58d581a50bc5ba3f9bd60bfd2335b98

      SHA512

      230e1055716ef092133127da2ef9ef1917b8031e9ec5b8801c24a0bd74a3510997cf73b2494792142fb6244ebec1f30247eadc28a750866877c4da4623e5204a

    • memory/2744-1095-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2744-1109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4092-0-0x000000007522E000-0x000000007522F000-memory.dmp

      Filesize

      4KB

    • memory/4092-1-0x0000000000FA0000-0x0000000001082000-memory.dmp

      Filesize

      904KB

    • memory/4092-2-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-3-0x0000000006380000-0x000000000649E000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-19-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-23-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-57-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-67-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-66-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-63-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-61-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-59-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-55-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-53-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-49-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-47-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-45-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-43-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-41-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-37-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-35-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-33-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-31-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-29-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-27-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-25-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-21-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-17-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-15-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-13-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-9-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-7-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-5-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-51-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-39-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-11-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-4-0x0000000006380000-0x0000000006498000-memory.dmp

      Filesize

      1.1MB

    • memory/4092-315-0x000000007522E000-0x000000007522F000-memory.dmp

      Filesize

      4KB

    • memory/4092-908-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-1080-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-1082-0x0000000006650000-0x000000000669C000-memory.dmp

      Filesize

      304KB

    • memory/4092-1081-0x00000000065B0000-0x0000000006648000-memory.dmp

      Filesize

      608KB

    • memory/4092-1086-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-1087-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-1088-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-1089-0x0000000006FA0000-0x0000000007544000-memory.dmp

      Filesize

      5.6MB

    • memory/4092-1090-0x00000000069F0000-0x0000000006A44000-memory.dmp

      Filesize

      336KB

    • memory/4092-1100-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB