General

  • Target

    0cf94bdd82505c2a44db76657c22ebb4adcf8f2af8d6d45e3cd40d3a24a1553c

  • Size

    1.5MB

  • Sample

    221126-hvbb3sah32

  • MD5

    964c84f32466476439271e924ce75a99

  • SHA1

    fb0c89bdd9b089a44a700713987e968482df52ab

  • SHA256

    0cf94bdd82505c2a44db76657c22ebb4adcf8f2af8d6d45e3cd40d3a24a1553c

  • SHA512

    35c37127a6cb89f5ffa4cf5e1fc94297afc3c3bac667c29e9a590acd5fb7d996e3f64900f613983176e1b9d53474006178734a3c8890611b4e6c4555604eeb54

  • SSDEEP

    24576:2sdcxIBnQop1p9LLv//2ikv//2ikv//2i:ByIBnQop1XLv//nkv//nkv//n

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

87.231.21.54:4242

192.168.0.18:4242

Mutex

70d1bdbc-d559-46a9-a994-a1e7a53d8c61

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    192.168.0.18

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-11-02T12:11:01.523613836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4242

  • default_group

    Bought

  • 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

    70d1bdbc-d559-46a9-a994-a1e7a53d8c61

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    87.231.21.54

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Targets

    • Target

      0cf94bdd82505c2a44db76657c22ebb4adcf8f2af8d6d45e3cd40d3a24a1553c

    • Size

      1.5MB

    • MD5

      964c84f32466476439271e924ce75a99

    • SHA1

      fb0c89bdd9b089a44a700713987e968482df52ab

    • SHA256

      0cf94bdd82505c2a44db76657c22ebb4adcf8f2af8d6d45e3cd40d3a24a1553c

    • SHA512

      35c37127a6cb89f5ffa4cf5e1fc94297afc3c3bac667c29e9a590acd5fb7d996e3f64900f613983176e1b9d53474006178734a3c8890611b4e6c4555604eeb54

    • SSDEEP

      24576:2sdcxIBnQop1p9LLv//2ikv//2ikv//2i:ByIBnQop1XLv//nkv//nkv//n

    • Modifies WinLogon for persistence

    • NanoCore

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

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks