Analysis

  • max time kernel
    122s
  • max time network
    161s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    04/11/2021, 12:30

General

  • Target
    Bank Report.exe
  • Size 440KB
  • Sample211104-ppgp8sgfa2
  • SHA256 dc67d526778506c9a50dd58b681dcd1dc12b82ddf6d7fc2e1097ee3e14ec62e6
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • dera31.ddns.net:1187

  • 195.133.18.211:1187

Mutex
  • f4157c11-54e5-4893-8a60-6856b8471d8c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    195.133.18.211

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-08-13T08:45:25.192912336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1187

  • 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

    f4157c11-54e5-4893-8a60-6856b8471d8c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    dera31.ddns.net

  • 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

Signatures

  • NanoCore

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bank Report.exe
    "C:\Users\Admin\AppData\Local\Temp\Bank Report.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\Bank Report.exe
      "C:\Users\Admin\AppData\Local\Temp\Bank Report.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1768

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1768-116-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1768-119-0x00000000027C0000-0x00000000027C1000-memory.dmp

        memory/2244-115-0x0000000001210000-0x0000000001211000-memory.dmp