General

  • Target

    9f4000dbe372c80857cc5af73605bbead88e40261436c789524b8146c4684516

  • Size

    1024KB

  • Sample

    221128-v52y1agf3z

  • MD5

    793495e61221e0a71c42644865debf55

  • SHA1

    0d8860f60537e398e243c4c95a810c73b5f5779c

  • SHA256

    9f4000dbe372c80857cc5af73605bbead88e40261436c789524b8146c4684516

  • SHA512

    d6c436405f4bf793edfc3e87179057d58b75400eda2e4a946ba08c01b3b63b7fdf40c281639a52decac04f421452d3aa85114cac5ba18fcc77af51d1ddc7b9c2

  • SSDEEP

    12288:JhCJdkjmABe8wvBWyMYKCOnHgW29s0oK/Lgu1Mj6KNE:Jkdbp8gKCqgWuD1MtS

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

sallyshooter100.chickenkiller.com:1604

Mutex

6b3f3db7-a2ba-4442-a23c-33959d71e1d6

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-11-12T03:24:36.684784836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1604

  • 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

    6b3f3db7-a2ba-4442-a23c-33959d71e1d6

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    sallyshooter100.chickenkiller.com

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Targets

    • Target

      9f4000dbe372c80857cc5af73605bbead88e40261436c789524b8146c4684516

    • Size

      1024KB

    • MD5

      793495e61221e0a71c42644865debf55

    • SHA1

      0d8860f60537e398e243c4c95a810c73b5f5779c

    • SHA256

      9f4000dbe372c80857cc5af73605bbead88e40261436c789524b8146c4684516

    • SHA512

      d6c436405f4bf793edfc3e87179057d58b75400eda2e4a946ba08c01b3b63b7fdf40c281639a52decac04f421452d3aa85114cac5ba18fcc77af51d1ddc7b9c2

    • SSDEEP

      12288:JhCJdkjmABe8wvBWyMYKCOnHgW29s0oK/Lgu1Mj6KNE:Jkdbp8gKCqgWuD1MtS

    • Modifies WinLogon for persistence

    • 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

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks