General

  • Target

    0efa68399642ad4d08bec00830a7262877925c79429eaf03545c8deedd185dc7

  • Size

    914KB

  • Sample

    221127-nlxfvadd22

  • MD5

    d712200bcf78ff5e33266826b4de4854

  • SHA1

    e91b83ec20598e314a5482648fc973735596b674

  • SHA256

    0efa68399642ad4d08bec00830a7262877925c79429eaf03545c8deedd185dc7

  • SHA512

    7dbb5833e131675af30f65ea9ff38b34138958940c0c04e844a00b843c7ee4caaf3b182318803af80a867d2f2af85ba2e821afde065eb9c0fcaf68ca65aa635b

  • SSDEEP

    24576:WISfTWxk9D2Q+3h0l0G0psK+Z83wHxaaGWn:WISfTjDFOG8J+ZmwIaGWn

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

lyfoon.ddns.net:4555

Mutex

e202a9ec-81d2-4e38-88e4-e95b37170f2c

Attributes
  • activate_away_mode

    false

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-08T04:53:28.813769236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4555

  • 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

    e202a9ec-81d2-4e38-88e4-e95b37170f2c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    lyfoon.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

    1.2.1.1

  • wan_timeout

    8000

Targets

    • Target

      0efa68399642ad4d08bec00830a7262877925c79429eaf03545c8deedd185dc7

    • Size

      914KB

    • MD5

      d712200bcf78ff5e33266826b4de4854

    • SHA1

      e91b83ec20598e314a5482648fc973735596b674

    • SHA256

      0efa68399642ad4d08bec00830a7262877925c79429eaf03545c8deedd185dc7

    • SHA512

      7dbb5833e131675af30f65ea9ff38b34138958940c0c04e844a00b843c7ee4caaf3b182318803af80a867d2f2af85ba2e821afde065eb9c0fcaf68ca65aa635b

    • SSDEEP

      24576:WISfTWxk9D2Q+3h0l0G0psK+Z83wHxaaGWn:WISfTjDFOG8J+ZmwIaGWn

    • NanoCore

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

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Detected potential entity reuse from brand microsoft.

    • 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

2
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Tasks