General

  • Target

    dekont.pdf.exe

  • Size

    903KB

  • Sample

    210810-d2z5laqzc2

  • MD5

    4a36eccbb48f54d243b7982530cfa61b

  • SHA1

    fbf72fc16184a18f6a15800daa1e828a514fc392

  • SHA256

    eb2c54829751a21c9865767bcd7056892a02a66f73bf39c2c07a1eb6e3ea5599

  • SHA512

    db680deea1b90f6457c840195f33c36ddf851e05e807d5f6e1f8fca26bdd180a56826db80916e9e1146845a78e3026d6d0f1e5ee25304829828847a40fb4a520

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.120:1913

Mutex

d546cc73-3253-46d2-a040-3bee294c3ed7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-21T18:00:18.544248036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1913

  • default_group

    Jojo

  • 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

    d546cc73-3253-46d2-a040-3bee294c3ed7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    79.134.225.120

  • 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

      dekont.pdf.exe

    • Size

      903KB

    • MD5

      4a36eccbb48f54d243b7982530cfa61b

    • SHA1

      fbf72fc16184a18f6a15800daa1e828a514fc392

    • SHA256

      eb2c54829751a21c9865767bcd7056892a02a66f73bf39c2c07a1eb6e3ea5599

    • SHA512

      db680deea1b90f6457c840195f33c36ddf851e05e807d5f6e1f8fca26bdd180a56826db80916e9e1146845a78e3026d6d0f1e5ee25304829828847a40fb4a520

    • NanoCore

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

    • suricata: ET MALWARE Possible NanoCore C2 60B

      suricata: ET MALWARE Possible NanoCore C2 60B

    • 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 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

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Tasks