General

  • Target

    1017fcdd21ff4ee2a5ac3d90b680d2fe.exe

  • Size

    627KB

  • Sample

    230323-s1wkbagf27

  • MD5

    1017fcdd21ff4ee2a5ac3d90b680d2fe

  • SHA1

    b9e040314eb74c24ad9f42ce37032ad238a37649

  • SHA256

    a898127d2c98fda1751d317cdf3a1d85f79de8fe762edb2415ec04e7c1c53a6f

  • SHA512

    a14a8ba5d52b4e206fe25dd7f889061baf6d56f2fface2121254bf3b3ba24062d342d0f196347af6055261961b1a9b56a8b8b52c3f65843ed3c32e30644384db

  • SSDEEP

    12288:pToPWBv/cpGrU3yJDwlNm2n+d6twT2/FRXJbIMp8NDSjt/:pTbBv5rUGGm5UtwT29EMp8J+/

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

justkowir.duckdns.org:8550

Mutex

513a9907-f4ca-4a36-8f25-fcb7088c00a5

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    justkowir.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-01-03T15:53:14.690945336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8550

  • 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

    513a9907-f4ca-4a36-8f25-fcb7088c00a5

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    justkowir.duckdns.org

  • primary_dns_server

    8.8.8.8

  • 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

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      1017fcdd21ff4ee2a5ac3d90b680d2fe.exe

    • Size

      627KB

    • MD5

      1017fcdd21ff4ee2a5ac3d90b680d2fe

    • SHA1

      b9e040314eb74c24ad9f42ce37032ad238a37649

    • SHA256

      a898127d2c98fda1751d317cdf3a1d85f79de8fe762edb2415ec04e7c1c53a6f

    • SHA512

      a14a8ba5d52b4e206fe25dd7f889061baf6d56f2fface2121254bf3b3ba24062d342d0f196347af6055261961b1a9b56a8b8b52c3f65843ed3c32e30644384db

    • SSDEEP

      12288:pToPWBv/cpGrU3yJDwlNm2n+d6twT2/FRXJbIMp8NDSjt/:pTbBv5rUGGm5UtwT29EMp8J+/

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks