Overview

overview

10

Static

static

f6733bfd34...50.exe

windows7_x64

10

f6733bfd34...50.exe

windows10_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14/11/2020, 18:07

Sharing

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General

  • Target
    f6733bfd3481b08aded257e81becb18224ef6f537d09fb5a06f744bdc4e22350.exe
  • Size 1.1MB
  • Sample201114-mpltcmnyea
  • SHA256 f6733bfd3481b08aded257e81becb18224ef6f537d09fb5a06f744bdc4e22350
  • MD5 SHA1 SHA512
Score
10/10
nanocorekeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • windowslivesoffice.ddns.net:20377

  • 127.0.0.1:20377

Mutex

  • ebebb95b-836f-4d8b-92f1-dafac3cec9d8

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-03-14T13:33:18.176993536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    20377

  • default_group

    02/06/2019

  • 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

    ebebb95b-836f-4d8b-92f1-dafac3cec9d8

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    windowslivesoffice.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.

    keyloggertrojanstealerspywarenanocore
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f6733bfd3481b08aded257e81becb18224ef6f537d09fb5a06f744bdc4e22350.exe
    "C:\Users\Admin\AppData\Local\Temp\f6733bfd3481b08aded257e81becb18224ef6f537d09fb5a06f744bdc4e22350.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2800

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2800-0-0x0000000000400000-0x0000000000438000-memory.dmp
        Download