Analysis

  • max time kernel
    80s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    08-07-2020 07:19

General

  • Target

    Booking_Quote.exe

  • Size

    847KB

  • MD5

    aba916f3b7571e5ed3a8813407490a7a

  • SHA1

    846c332c18b1799471c6243181fb01896ce0cb79

  • SHA256

    832782af8ac7a682f48d5a00f549a5474d6b2524386c8826eae41982db8597c3

  • SHA512

    4a88b7a0109ed6f9bfecef0f305b633c2779c9e190f6995cf8aa59d50d24da21f8b0c1657f316c22e7455931dc16adb86aca3e12319798c93389104ebd084567

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

u852121.nvpn.to:3410

Mutex

6600ee3d-9113-495f-9807-2cbadaeabc68

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    u852121.nvpn.to

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-29T22:15:11.322294736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    3410

  • default_group

    usp

  • 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

    6600ee3d-9113-495f-9807-2cbadaeabc68

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    u852121.nvpn.to

  • 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

Signatures

  • NanoCore

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

  • Suspicious use of WriteProcessMemory 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Booking_Quote.exe
    "C:\Users\Admin\AppData\Local\Temp\Booking_Quote.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetThreadContext
    PID:3576
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vWdshdpNeryGb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8320.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2724
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "{path}"
      2⤵
        PID:3648
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        "{path}"
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Checks whether UAC is enabled
        PID:3832

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp8320.tmp

    • memory/2724-0-0x0000000000000000-mapping.dmp

    • memory/3832-2-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/3832-3-0x000000000041E792-mapping.dmp