General

  • Target

    Request For Quotation.scr.exe

  • Size

    331KB

  • Sample

    240125-psxwmageeq

  • MD5

    c6887a484d020149fd2cb421fd69cc2d

  • SHA1

    b5e80f2574a75cc8918965392287244dc9ef8d8b

  • SHA256

    4e31d493a6e64c76ff10026b147f95c6f2982860609803d88c8738a26fa3309f

  • SHA512

    0a72db3bdcee2dae02cd713a7a0e60dabae3120c41de02cfce8cc409a5fdf0bafda3b5c188345673e4b8b57ee2ceff182fd41c80bde356a40c1909926a07668f

  • SSDEEP

    6144:9EviuZ5kqqHGepcTdDoWuQV6Y1LL4S8QnfcE5L4paEL2MQqg:S3CRmdcWfV6Y1zhfcYUpam1Q

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harold.jetos.com:6051

Mutex

c21ee39c-274d-42dc-9878-9c010930f524

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    harold.jetos.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-11-05T15:38:42.943803836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6051

  • default_group

    sales224

  • 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

    c21ee39c-274d-42dc-9878-9c010930f524

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    harold.jetos.com

  • 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

      Request For Quotation.scr.exe

    • Size

      331KB

    • MD5

      c6887a484d020149fd2cb421fd69cc2d

    • SHA1

      b5e80f2574a75cc8918965392287244dc9ef8d8b

    • SHA256

      4e31d493a6e64c76ff10026b147f95c6f2982860609803d88c8738a26fa3309f

    • SHA512

      0a72db3bdcee2dae02cd713a7a0e60dabae3120c41de02cfce8cc409a5fdf0bafda3b5c188345673e4b8b57ee2ceff182fd41c80bde356a40c1909926a07668f

    • SSDEEP

      6144:9EviuZ5kqqHGepcTdDoWuQV6Y1LL4S8QnfcE5L4paEL2MQqg:S3CRmdcWfV6Y1zhfcYUpam1Q

    • NanoCore

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

    • Executes dropped EXE

    • Uses the VBS compiler for execution

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks