General

  • Target

    INV198763.js

  • Size

    490KB

  • Sample

    220614-f8allacbbr

  • MD5

    d2f059207365496e0882106890b537fc

  • SHA1

    8f58c2d8cdf2e45cd8bc2550ad3297bbd411e7f2

  • SHA256

    ccfa8f60748182d0624626398d29548e4912c930152fd14da7ea172b29953871

  • SHA512

    e042589d54a0ca9eb8b88208d046fff27920bd1853791f7f1c7b9f63fc3edaeb909c7f8a5cdb94249278cc35f0d74ca2e216cf697838bb4be5e1e5efe15ffc60

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

blessed147.ddns.net:8089

Mutex

40ea8615-bb8c-4ed8-9592-a1252dd082e6

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    blessed147.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-03-26T04:34:52.362349036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8089

  • 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

    40ea8615-bb8c-4ed8-9592-a1252dd082e6

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • primary_dns_server

    8.8.8.8

  • 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

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      INV198763.js

    • Size

      490KB

    • MD5

      d2f059207365496e0882106890b537fc

    • SHA1

      8f58c2d8cdf2e45cd8bc2550ad3297bbd411e7f2

    • SHA256

      ccfa8f60748182d0624626398d29548e4912c930152fd14da7ea172b29953871

    • SHA512

      e042589d54a0ca9eb8b88208d046fff27920bd1853791f7f1c7b9f63fc3edaeb909c7f8a5cdb94249278cc35f0d74ca2e216cf697838bb4be5e1e5efe15ffc60

    • NanoCore

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

    • Vjw0rm

      Vjw0rm is a remote access trojan written in JavaScript.

    • suricata: ET MALWARE Possible NanoCore C2 60B

      suricata: ET MALWARE Possible NanoCore C2 60B

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

    • Checks whether UAC is enabled

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks