General

  • Target

    38e14f1ab8dab71a76cbbc260d5c43d41023f2b23e8955f29dc81213454660f2

  • Size

    247KB

  • Sample

    221126-2yvpnsbe86

  • MD5

    9deae9ea695e8e5fdab35294f848e6b2

  • SHA1

    73314c20de4b46a6ddb5c9b224e22c1c20ef0183

  • SHA256

    38e14f1ab8dab71a76cbbc260d5c43d41023f2b23e8955f29dc81213454660f2

  • SHA512

    89b70646c7789b81c029829a47888b93af8033b92665104e0513446b4ca08fb3e04579480a5d00ef50817104742ff747b20c0b03f9ab82d6c8cf5738bf369d76

  • SSDEEP

    6144:6HVBccB9DtCftfZSmijPZtWVbOV9s2W4A375ySgMz0TRn4w:orybOV9ssi5NgM4T

Malware Config

Extracted

Family

nanocore

Version

1.2.0.0

C2

informer.ddns.net:9033

Mutex

f26b04ec-d813-46f5-a7c2-6b8110394025

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    informer.ddns.net

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-08-13T12:19:06.373609236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9033

  • default_group

    Default

  • 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

    f26b04ec-d813-46f5-a7c2-6b8110394025

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    informer.ddns.net

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.0.0

  • wan_timeout

    8000

Targets

    • Target

      38e14f1ab8dab71a76cbbc260d5c43d41023f2b23e8955f29dc81213454660f2

    • Size

      247KB

    • MD5

      9deae9ea695e8e5fdab35294f848e6b2

    • SHA1

      73314c20de4b46a6ddb5c9b224e22c1c20ef0183

    • SHA256

      38e14f1ab8dab71a76cbbc260d5c43d41023f2b23e8955f29dc81213454660f2

    • SHA512

      89b70646c7789b81c029829a47888b93af8033b92665104e0513446b4ca08fb3e04579480a5d00ef50817104742ff747b20c0b03f9ab82d6c8cf5738bf369d76

    • SSDEEP

      6144:6HVBccB9DtCftfZSmijPZtWVbOV9s2W4A375ySgMz0TRn4w:orybOV9ssi5NgM4T

    • Modifies WinLogon for persistence

    • NanoCore

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

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks