General

  • Target

    f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea.exe

  • Size

    92KB

  • Sample

    250102-cbxs3sxjd1

  • MD5

    76588f4bc306a7adbea175dfbdd9b0bb

  • SHA1

    e4d32b94becf0a27194eddefd3acb709924175de

  • SHA256

    f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea

  • SHA512

    f1a7d5a18da82c25a1c8be319b52e5997f8e9ca45a2b07f6ab173dbe578ba3f4d81de5ad7d1633a324798260bd6342ee9ffbbfeac155d52bd1c1f98e7ef44b1c

  • SSDEEP

    1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6vre:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+H

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

nhatde0166-47406.portmap.host:47406

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %WinDir%\System32

  • mouse_option

    false

  • mutex

    remcos_whmmzkguja

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea.exe

    • Size

      92KB

    • MD5

      76588f4bc306a7adbea175dfbdd9b0bb

    • SHA1

      e4d32b94becf0a27194eddefd3acb709924175de

    • SHA256

      f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea

    • SHA512

      f1a7d5a18da82c25a1c8be319b52e5997f8e9ca45a2b07f6ab173dbe578ba3f4d81de5ad7d1633a324798260bd6342ee9ffbbfeac155d52bd1c1f98e7ef44b1c

    • SSDEEP

      1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6vre:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+H

    • Modifies WinLogon for persistence

    • Remcos

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

    • Remcos family

    • UAC bypass

    • Adds policy Run key to start application

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Modifies WinLogon

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks