General

  • Target

    f6x8LJCP.exe

  • Size

    128KB

  • Sample

    220810-yh4e4agcb7

  • MD5

    da88c3cc6dbd042b0971b5951d6fb5f4

  • SHA1

    d972b5f0d29ebd6db596c607434bf930ab822d48

  • SHA256

    56b9e1a9f0704305007504a26661905930387fc49d0fb0f9938d28fd1d46e60a

  • SHA512

    e747435ce57b90f0d9c574192c6c87f0aa9143304a764f847bf1566956fa179a350e75957f353692d060d186815a28554dde917b4229fd4155a9abf169984206

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

defender

C2

2.tcp.ngrok.io:17041

Attributes
  • audio_folder

    Micdefender

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    defender.exe

  • copy_folder

    defender

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    defender

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-FZLLSK

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    defenderscrsh

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Defender

  • take_screenshot_option

    true

  • take_screenshot_time

    185

  • take_screenshot_title

    gmail, facebook, twitter

Targets

    • Target

      f6x8LJCP.exe

    • Size

      128KB

    • MD5

      da88c3cc6dbd042b0971b5951d6fb5f4

    • SHA1

      d972b5f0d29ebd6db596c607434bf930ab822d48

    • SHA256

      56b9e1a9f0704305007504a26661905930387fc49d0fb0f9938d28fd1d46e60a

    • SHA512

      e747435ce57b90f0d9c574192c6c87f0aa9143304a764f847bf1566956fa179a350e75957f353692d060d186815a28554dde917b4229fd4155a9abf169984206

    • Remcos

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

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Tasks