General

  • Target
    Stage0.exe
  • Size 844KB
  • Sample260612-vm3gtabv9l
  • SHA256 abd9e0b14bebbe2a41b964a2817b329d9f06f8dd4742e60720c59bf4e3c36149
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • skynet3.ydns.eu:10134

  • skynet2.ydns.eu:10134

Mutex
  • 744e7b6d-d4dd-411b-a584-485cec7bc407

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    skynet2.ydns.eu

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2026-03-24T15:32:36.450100836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    10134

  • default_group

    Xploit

  • enable_debug_mode

    true

  • gc_threshold

    1.0485754e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2497

  • max_packet_size

    1.0485757e+07

  • mutex

    744e7b6d-d4dd-411b-a584-485cec7bc407

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    skynet3.ydns.eu

  • 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

    4997

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target
      Stage0.exe
    • Size 844KB
    • SHA256 abd9e0b14bebbe2a41b964a2817b329d9f06f8dd4742e60720c59bf4e3c36149
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: NanoCore

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

    • Family: r77

      r77 is an open-source, userland rootkit.

    • r77 rootkit payload

      Detects the payload of the r77 rootkit.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v16

Tasks