Overview

overview

10

Static

static

91bf35db53...98.exe

windows7-x64

10

91bf35db53...98.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    163s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 18:10

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General

  • Target
    91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398.exe
  • Size 800KB
  • Sample221127-wsb3gsgf27
  • SHA256 91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.1.1

C2

  • asusdriverupdate.no-ip.org:8010

  • asusoftware.no-ip.org:8010

Mutex

  • 62aaea5d-8d33-4111-a6c4-ac14b367d837

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    asusoftware.no-ip.org

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-09-22T23:17:26.897272036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    8010

  • default_group

    Wave1

  • 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

    62aaea5d-8d33-4111-a6c4-ac14b367d837

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    asusdriverupdate.no-ip.org

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Signatures

  • NanoCore

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

    keyloggertrojanstealerspywarenanocore
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398.exe
    "C:\Users\Admin\AppData\Local\Temp\91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398.exe"
    1⤵
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3952
    • C:\Users\Admin\AppData\Local\Temp\91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398.exe
      "C:\Users\Admin\AppData\Local\Temp\91bf35db5376545504dc774d8f30fa84484ebf957f4c4af2b69a5862ef66e398.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3368

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3368-135-0x0000000000400000-0x0000000000482000-memory.dmp
        Download

        memory/3368-136-0x0000000075270000-0x0000000075821000-memory.dmp
        Download

        memory/3368-137-0x0000000075270000-0x0000000075821000-memory.dmp
        Download

        memory/3952-132-0x0000000075270000-0x0000000075821000-memory.dmp
        Download

        memory/3952-133-0x0000000075270000-0x0000000075821000-memory.dmp
        Download