General

  • Target

    dc92e08e8e52ea5e06ab658ff7f26c8e38b99848a4867215df19bd5622d29601

  • Size

    289KB

  • Sample

    221003-cxkewaccb5

  • MD5

    e1cbff77419c07533992570db6655537

  • SHA1

    2f2cba4096c96e9653e01a2e8b03db85a3b89610

  • SHA256

    dc92e08e8e52ea5e06ab658ff7f26c8e38b99848a4867215df19bd5622d29601

  • SHA512

    6776ae461034b4ced75d26547ea0fb38d8e7f7daec5f521043c8d8e2edd8b37076a561927416e53a96930d0488f7b7f2ce154c238271d31df577048fd7c2217a

  • SSDEEP

    6144:oSljmItmqkNF/QkwTQvt1LeYcglBU4ZPwgijXp3Tyugn:jNt4qkb8Qlxvcq5GLRyugn

Malware Config

Extracted

Family

nanocore

Version

1.2.2.2

C2

23.105.131.163:9909

Mutex

2d97cb3b-a7c9-4d84-8f96-c50f0f396c68

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    23.105.131.163

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-06-19T07:09:17.683700536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9909

  • default_group

    slaves

  • 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

    2d97cb3b-a7c9-4d84-8f96-c50f0f396c68

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    23.105.131.163

  • primary_dns_server

    8.8.8.8

  • 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

    1.2.2.2

  • wan_timeout

    8000

Targets

    • Target

      dc92e08e8e52ea5e06ab658ff7f26c8e38b99848a4867215df19bd5622d29601

    • Size

      289KB

    • MD5

      e1cbff77419c07533992570db6655537

    • SHA1

      2f2cba4096c96e9653e01a2e8b03db85a3b89610

    • SHA256

      dc92e08e8e52ea5e06ab658ff7f26c8e38b99848a4867215df19bd5622d29601

    • SHA512

      6776ae461034b4ced75d26547ea0fb38d8e7f7daec5f521043c8d8e2edd8b37076a561927416e53a96930d0488f7b7f2ce154c238271d31df577048fd7c2217a

    • SSDEEP

      6144:oSljmItmqkNF/QkwTQvt1LeYcglBU4ZPwgijXp3Tyugn:jNt4qkb8Qlxvcq5GLRyugn

    • 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.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks