General

  • Target

    3ff810efa7cabb7e4c91319244aa19d0460fad2b8500663441c7bff068014067

  • Size

    570KB

  • Sample

    220521-pcafdsabhp

  • MD5

    fa37810aeacda1365a7e7c6c597eeb40

  • SHA1

    c108a44c77162f4f485601f86dc859ee85687019

  • SHA256

    3ff810efa7cabb7e4c91319244aa19d0460fad2b8500663441c7bff068014067

  • SHA512

    5037b2d41e5acb4250e8aa240ad00c263817ee7cea2e8198495e7ff2cdccaaa46fcdb80d8fde5d3efdaf14bf23952519002fd8fe3d504e3711286b38bce128cf

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

172.111.188.199:8829

Mutex

ce1d7a43-a4b9-4511-9ddf-1134841f2535

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-02-02T10:25:40.952250336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8829

  • default_group

    Billi

  • 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

    ce1d7a43-a4b9-4511-9ddf-1134841f2535

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    172.111.188.199

  • 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

      Document.exe

    • Size

      510KB

    • MD5

      c132501f57681f7307e29f080627821d

    • SHA1

      4ff835fb3f9bd774de9c2dcc03d93aa810f6d03b

    • SHA256

      c068b1a7379f95ee883cd4ed9639bb2b28c380934f3bc0e0c7be97ad808c7b8a

    • SHA512

      59d86aed1c171e0a95cd437407a36ddf5a272f151baafd5fb1fbd3d2f01d46c7755192a6e77bac33dc48c80456e403914df6d8c71745badc1161d6785e3bb1c2

    • NanoCore

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

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Checks whether UAC is enabled

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Tasks