General

  • Target

    chrome.exe

  • Size

    583KB

  • Sample

    230220-sngkmaag9z

  • MD5

    42ee1ad3b4600a955888780e8899c1ce

  • SHA1

    4ba8b368c32fa57703613e0c98d90381b872d5ad

  • SHA256

    caf073b1d85bc136488382be2c83c264ac64d2df279752341b1c4601c6201a41

  • SHA512

    42063774445da72a55fd97b8a614275993ac7def057efea876e2bafca5a4560c553a450252157a662364e58734d221632547f1e776d7bd8b600ca4c127c03665

  • SSDEEP

    12288:L5Z+mqofs6TaXML3crUlbIInrHR2Fwn6DijBtpl2i6F+0cfjoop:tUJN9MwrfInrHvnY7ipzoop

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

212.87.204.153:6100

Mutex

ea7f103c-d9e6-4f82-9646-8d28f9c28502

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    212.87.204.153

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-12-02T00:16:59.005970036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6100

  • default_group

    GRACE

  • 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

    ea7f103c-d9e6-4f82-9646-8d28f9c28502

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    212.87.204.153

  • 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

      chrome.exe

    • Size

      583KB

    • MD5

      42ee1ad3b4600a955888780e8899c1ce

    • SHA1

      4ba8b368c32fa57703613e0c98d90381b872d5ad

    • SHA256

      caf073b1d85bc136488382be2c83c264ac64d2df279752341b1c4601c6201a41

    • SHA512

      42063774445da72a55fd97b8a614275993ac7def057efea876e2bafca5a4560c553a450252157a662364e58734d221632547f1e776d7bd8b600ca4c127c03665

    • SSDEEP

      12288:L5Z+mqofs6TaXML3crUlbIInrHR2Fwn6DijBtpl2i6F+0cfjoop:tUJN9MwrfInrHvnY7ipzoop

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • NanoCore

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

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks