General

  • Target

    1a105fd0cd1ebae84298e4121c3f1ace6242484b17065330b1458c282ed053f3

  • Size

    539KB

  • Sample

    221126-kejdvseg97

  • MD5

    b87786ecb8a32ec5d695cfc4e0ddf6ec

  • SHA1

    bd9b44275d732212dcefc185aff3c7819f3a498d

  • SHA256

    1a105fd0cd1ebae84298e4121c3f1ace6242484b17065330b1458c282ed053f3

  • SHA512

    80030f4746f8e7b140aeea33918809f5e17b20d12b6d24afdc90af7f0c513b2b904b9115e4d9f4722e4fe02be56555af74cdfbea315fad1ab432a363f2b0595b

  • SSDEEP

    12288:nls/QJGj8jg4HkMO9E2ZtJY65qyYbmjgOdn:Xg4vWZtJY65ql6dn

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

87.231.21.54:4242

192.168.0.18:4242

Mutex

322262ce-9696-4b85-b0b7-24f45dfb3e97

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    192.168.0.18

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-27T20:39:29.987250736Z

  • 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

    TheGr8Spread

  • 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

    322262ce-9696-4b85-b0b7-24f45dfb3e97

  • 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

      1a105fd0cd1ebae84298e4121c3f1ace6242484b17065330b1458c282ed053f3

    • Size

      539KB

    • MD5

      b87786ecb8a32ec5d695cfc4e0ddf6ec

    • SHA1

      bd9b44275d732212dcefc185aff3c7819f3a498d

    • SHA256

      1a105fd0cd1ebae84298e4121c3f1ace6242484b17065330b1458c282ed053f3

    • SHA512

      80030f4746f8e7b140aeea33918809f5e17b20d12b6d24afdc90af7f0c513b2b904b9115e4d9f4722e4fe02be56555af74cdfbea315fad1ab432a363f2b0595b

    • SSDEEP

      12288:nls/QJGj8jg4HkMO9E2ZtJY65qyYbmjgOdn:Xg4vWZtJY65ql6dn

    • 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.

    • Drops startup file

    • Loads dropped DLL

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks