Resubmissions

21-01-2025 11:18

250121-nef6aa1jfx 10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-01-2025 11:18

General

  • Target

    938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598.exe

  • Size

    1.9MB

  • MD5

    c318036044f10d288cedac36d81a611b

  • SHA1

    442245535cd0c4876f784a28fdbf6a32bb70e220

  • SHA256

    938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598

  • SHA512

    6043678915f0893b3fbca5633dc1effe2e27d0f25eb1da413b14b93aa4204334b8792fee3e67bbfc905cc0130748afbec6fc6aaf834fe7c168a430bd06d769da

  • SSDEEP

    24576:MDXpgvsPjx71gWufN62I520/hjlB6iTzKF+iZpWWt5YY7tOvkIOTUQvb7Mhh21:MDevYxSNudSrZpWKd7tOvJOpb7K81

Malware Config

Extracted

Family

remcos

Version

4.9.3 Light

Botnet

RemoteHost

C2

127.0.0.1:2404

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

    remcos

  • mouse_option

    false

  • mutex

    Rmc-52SPIJ

  • 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.

  • Remcos family
  • 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598.exe
    "C:\Users\Admin\AppData\Local\Temp\938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598.exe
      "C:\Users\Admin\AppData\Local\Temp\938b7e042bda75e416261e46d0d4873781fd5d53c2ce6c2748b92eeb8a826598.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1184

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1184-37-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-56-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-6-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-13-0x0000000000400000-0x0000000000601000-memory.dmp

    Filesize

    2.0MB

  • memory/1184-14-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-3-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-73-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-72-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-71-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-38-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-69-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-15-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-16-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-17-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-18-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-19-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-20-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-68-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-67-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-66-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-65-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-22-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-23-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-24-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-25-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-26-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-27-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-28-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-29-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-30-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-31-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-32-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-33-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-34-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-35-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-36-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-64-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-70-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-42-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-40-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-41-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-39-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-43-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-44-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-45-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-46-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-47-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-48-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-49-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-50-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-51-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-52-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-53-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-54-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-55-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-12-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-57-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-58-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-59-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-60-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-61-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-62-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/1184-63-0x00000000000C0000-0x0000000000135000-memory.dmp

    Filesize

    468KB

  • memory/3404-1-0x0000000000407000-0x0000000000421000-memory.dmp

    Filesize

    104KB

  • memory/3404-21-0x0000000000400000-0x0000000000601000-memory.dmp

    Filesize

    2.0MB

  • memory/3404-9-0x00000000005C5000-0x00000000005CA000-memory.dmp

    Filesize

    20KB

  • memory/3404-10-0x00000000005C9000-0x00000000005FB000-memory.dmp

    Filesize

    200KB

  • memory/3404-11-0x00000000005CE000-0x00000000005FB000-memory.dmp

    Filesize

    180KB

  • memory/3404-8-0x00000000005BB000-0x00000000005C2000-memory.dmp

    Filesize

    28KB

  • memory/3404-7-0x0000000000407000-0x0000000000421000-memory.dmp

    Filesize

    104KB

  • memory/3404-5-0x0000000000400000-0x0000000000601000-memory.dmp

    Filesize

    2.0MB

  • memory/3404-2-0x0000000000400000-0x0000000000601000-memory.dmp

    Filesize

    2.0MB

  • memory/3404-0-0x0000000000400000-0x0000000000601000-memory.dmp

    Filesize

    2.0MB