General

  • Target

    filename.exe

  • Size

    687KB

  • Sample

    240229-wn9sysgd6w

  • MD5

    1350d9648bc6dbbd351d515fbc9de5cc

  • SHA1

    ff4e779eaf1bf1df1e98887e3e5cc28e3cec1ef3

  • SHA256

    635f24de6d64ad1659ea5dc1007fc6e7812ca4e8a94efee0d01f1db3f3c3f1b8

  • SHA512

    da8e169ff7bbca714c21cc5906e3bb99517329f9881bf7f0ea735ca4c7db3fe1e2cf8c624a560fe6dda3e79c9a1433342701c8aeea43d8d92e94bc6f8d357124

  • SSDEEP

    12288:sMoBuBvLMMkXQVamELNIv/0nvvXTDiCzDSd2VhJEznw1:sBBmLMaEJ7nvvHlzDMIhJV

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

onpcsetup.duckdns.org:4040

Mutex

203f8bd6-6a6c-4f76-8c56-5af6d45c5fa2

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    onpcsetup.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-04-28T14:13:42.312808736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4040

  • default_group

    USA

  • 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

    203f8bd6-6a6c-4f76-8c56-5af6d45c5fa2

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    onpcsetup.duckdns.org

  • 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

      filename.exe

    • Size

      687KB

    • MD5

      1350d9648bc6dbbd351d515fbc9de5cc

    • SHA1

      ff4e779eaf1bf1df1e98887e3e5cc28e3cec1ef3

    • SHA256

      635f24de6d64ad1659ea5dc1007fc6e7812ca4e8a94efee0d01f1db3f3c3f1b8

    • SHA512

      da8e169ff7bbca714c21cc5906e3bb99517329f9881bf7f0ea735ca4c7db3fe1e2cf8c624a560fe6dda3e79c9a1433342701c8aeea43d8d92e94bc6f8d357124

    • SSDEEP

      12288:sMoBuBvLMMkXQVamELNIv/0nvvXTDiCzDSd2VhJEznw1:sBBmLMaEJ7nvvHlzDMIhJV

    • NanoCore

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

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks