General

  • Target

    ccd8fc18705b53aca63ce82b944858323498512cf5087696aed7fee39358cc2f

  • Size

    521KB

  • Sample

    221126-kdx6mahg61

  • MD5

    87ff74c6fc7166d9365f6376fa260026

  • SHA1

    a91a2e81a4cd43dbe12aa1219bd0585ffd555002

  • SHA256

    ccd8fc18705b53aca63ce82b944858323498512cf5087696aed7fee39358cc2f

  • SHA512

    1186569a4655486cecbb3067ac2d480a1a7fca9926e1a6764325b4a477b829ee97e07e32119b8c9998a15caff6feecca7e477ccfba1fe64e52aac20c397c2b6f

  • SSDEEP

    12288:mJZrZfSXwNFqo4R3Zbs4ys7U7cgt/GFr1PIxW1qM:sVFTAJFA/t/YRPIxxM

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

87.231.21.54:4242

192.168.0.18:4242

Mutex

cb32a65b-351e-4743-9439-5a68c0b610bb

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    192.168.0.18

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-30T07:51:34.058785536Z

  • 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

    Owww

  • 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

    cb32a65b-351e-4743-9439-5a68c0b610bb

  • 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

      ccd8fc18705b53aca63ce82b944858323498512cf5087696aed7fee39358cc2f

    • Size

      521KB

    • MD5

      87ff74c6fc7166d9365f6376fa260026

    • SHA1

      a91a2e81a4cd43dbe12aa1219bd0585ffd555002

    • SHA256

      ccd8fc18705b53aca63ce82b944858323498512cf5087696aed7fee39358cc2f

    • SHA512

      1186569a4655486cecbb3067ac2d480a1a7fca9926e1a6764325b4a477b829ee97e07e32119b8c9998a15caff6feecca7e477ccfba1fe64e52aac20c397c2b6f

    • SSDEEP

      12288:mJZrZfSXwNFqo4R3Zbs4ys7U7cgt/GFr1PIxW1qM:sVFTAJFA/t/YRPIxxM

    • 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 Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks