Overview

overview

10

Static

static

2a65f2f287...85.exe

windows7_x64

10

2a65f2f287...85.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    13/11/2020, 15:35

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General

  • Target
    2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe
  • Size 864KB
  • Sample201113-7cmn79bt56
  • SHA256 2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485
  • MD5 SHA1 SHA512
Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojanupx

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • norly.ddns.net:9098

  • 127.0.0.1:9098

Mutex

  • 624de92d-efc0-4fbf-8d91-5eb1b3fdc8a4

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    37.235.1.177

  • buffer_size

    65535

  • build_time

    2019-01-30T19:40:44.811900536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9098

  • default_group

    Brandnew

  • 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

    624de92d-efc0-4fbf-8d91-5eb1b3fdc8a4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    norly.ddns.net

  • primary_dns_server

    37.235.1.174

  • 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
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 741 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe
    "C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      PID:1456
    • C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe
      "C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.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:1564
    • C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe
      "C:\Users\Admin\AppData\Local\Temp\2a65f2f28768640478a8f5b6b8ee689c4045bbfa123418c3f158d83d1c54a485.exe" 2 1564 259261883
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1156

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1156-9-0x0000000000400000-0x00000000004DD000-memory.dmp
        Download

        memory/1456-2-0x0000000000090000-0x0000000000091000-memory.dmp
        Download

        memory/1564-3-0x0000000000400000-0x000000000047F000-memory.dmp
        Download

        memory/1564-7-0x00000000002A0000-0x00000000002D8000-memory.dmp
        Download

        memory/1564-6-0x0000000000400000-0x000000000047F000-memory.dmp
        Download

        memory/1564-5-0x0000000000400000-0x000000000047F000-memory.dmp
        Download

        memory/1564-10-0x0000000001E22000-0x0000000001E23000-memory.dmp
        Download

        memory/1564-11-0x0000000000220000-0x0000000000253000-memory.dmp
        Download

        memory/1924-0-0x0000000000400000-0x00000000004DD000-memory.dmp
        Download