General

  • Target
    new policy.scr.exe
  • Size 2.3MB
  • Sample240831-jptf5sshra
  • SHA256 3a5134cc11c7c47b7268e7bf6bf1556c5ff5044af54b7931cae652bfd8d83717
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • airlineagancy.casacam.net:7076

Mutex
  • BGCigTdLypaes6Nr

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • jacksonnnn233.theworkpc.com:65535

Mutex
  • 7065c9a5-e7ef-4b4a-9ad2-3b36dc826073

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-05-24T01:53:26.806116836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    65535

  • default_group

    JksonN

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    7065c9a5-e7ef-4b4a-9ad2-3b36dc826073

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    jacksonnnn233.theworkpc.com

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target
      new policy.scr.exe
    • Size 2.3MB
    • SHA256 3a5134cc11c7c47b7268e7bf6bf1556c5ff5044af54b7931cae652bfd8d83717
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Xworm Payload

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks