Resubmissions

17/04/2024, 12:01

240417-n666saea571

17/04/2024, 11:20

240417-nfqq4sdb3310

17/04/2024, 11:11

240417-nacmasch8810

General

  • Target
    https://worldyachtingclub.ru.com/D92873656.zip
  • Sample240417-nacmasch88

Malware Config

Extracted

Family
  • xworm

Version
  • 3.1

C2
  • aprilxrwo8450.duckdns.org:8450

Mutex
  • qF5e3kU5MtcMqia2

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • remco8100.duckdns.org:8100

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-G51VNO

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      https://worldyachtingclub.ru.com/D92873656.zip
    • Detect Xworm Payload

    • Detect ZGRat V1

    • Remcos

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

    • Xworm

      Xworm is a remote access trojan written in C#.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks