General

  • Target

    a785d83754fab56e2e0b55490686584b_JaffaCakes118

  • Size

    722KB

  • Sample

    241127-m4n2raxmbl

  • MD5

    a785d83754fab56e2e0b55490686584b

  • SHA1

    8e4fafdd41ebfa609607debb83681b99a777ab10

  • SHA256

    6d16110bddc20d35d1b19fb6cfc9521c78b56d2eb9f57e27da3e62461b0cef01

  • SHA512

    7979858efdca6b4e174d522a57356e2b08b6c446cce4658f6911fcc84c3d43934360a844af4ba2ab7a5ff49dee82fc920480f57826cc293a0fb81f1d0e84218c

  • SSDEEP

    12288:MbQ+X8+UiDLbRHahXUy/v0bp36JI0Vj9jQBbE8T+JBenCBiHMFlx:MbQ+X8+UiDLbRHahXUTl3UxQBb1THYRl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

believe2021.ddns.net:8181

127.0.0.1:8181

Mutex

1cac6758-af91-4c53-8daf-0376fffcb45c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    37.235.1.177

  • buffer_size

    65535

  • build_time

    2021-07-12T08:02:53.472557736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8181

  • default_group

    AAAAALINGN

  • 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

    1cac6758-af91-4c53-8daf-0376fffcb45c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    believe2021.ddns.net

  • primary_dns_server

    37.235.1.174

  • 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

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      a785d83754fab56e2e0b55490686584b_JaffaCakes118

    • Size

      722KB

    • MD5

      a785d83754fab56e2e0b55490686584b

    • SHA1

      8e4fafdd41ebfa609607debb83681b99a777ab10

    • SHA256

      6d16110bddc20d35d1b19fb6cfc9521c78b56d2eb9f57e27da3e62461b0cef01

    • SHA512

      7979858efdca6b4e174d522a57356e2b08b6c446cce4658f6911fcc84c3d43934360a844af4ba2ab7a5ff49dee82fc920480f57826cc293a0fb81f1d0e84218c

    • SSDEEP

      12288:MbQ+X8+UiDLbRHahXUy/v0bp36JI0Vj9jQBbE8T+JBenCBiHMFlx:MbQ+X8+UiDLbRHahXUTl3UxQBb1THYRl

    • NanoCore

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

    • Nanocore family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks