Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 19:50

General

  • Target
    Lists of enquiry.exe
  • Size 397KB
  • Sample201109-e8lzcfktrj
  • SHA256 36ac5bec6993086917f960048af37ef846dcfe5042aeb7c0bf519ae060d0ea90
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • u852121.nvpn.so:3410

Mutex
  • 294ce57f-f84f-4bfd-9184-6c75311f82d9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    u852121.nvpn.so

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-12-24T04:29:16.319887736Z

  • 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

    VPN

  • 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

    294ce57f-f84f-4bfd-9184-6c75311f82d9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    u852121.nvpn.so

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Lists of enquiry.exe
    "C:\Users\Admin\AppData\Local\Temp\Lists of enquiry.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1320
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1696

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1320-0-0x0000000074570000-0x0000000074C5E000-memory.dmp

        memory/1320-1-0x0000000001350000-0x0000000001351000-memory.dmp

        memory/1320-3-0x00000000002E0000-0x000000000031B000-memory.dmp

        memory/1696-4-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1696-6-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1696-7-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1696-8-0x0000000073860000-0x0000000073F4E000-memory.dmp

        memory/1696-11-0x00000000003F0000-0x00000000003F5000-memory.dmp

        memory/1696-12-0x0000000000630000-0x0000000000649000-memory.dmp

        memory/1696-13-0x0000000000520000-0x0000000000523000-memory.dmp