Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2024, 09:35

General

  • Target

    45e50d930432d9cedc34dfd29d0ef10d.exe

  • Size

    687KB

  • MD5

    45e50d930432d9cedc34dfd29d0ef10d

  • SHA1

    aaffe2041e2fc8619a24d862c1ca1abae5fe1f71

  • SHA256

    0aef1c6bc3804b522b5793742d05d6346a951c1ccf4000ab0dd3b37a1c362c14

  • SHA512

    ddc600c5fccfc20ecdc09dd852e213be9b7d5aeef2998da0f31f510845ca49a3162fc466141525c204965f92150794d445eec719f4209306c1e25cffd04fd01a

  • SSDEEP

    12288:n+J70shAUfvBweg+wToULrNMmnjx05WqV+60RiVycWTQLbOQDFi14Bp/j+PIH3ms:n+J70cLvBwP+8oUSmntIV+60wST8OQpi

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

microsoftsecurity.sytes.net:1177

backupnew.duckdns.org:1177

Mutex

f0d143be-967c-4293-98d3-3a1e128b5398

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    backupnew.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-07T22:19:05.511961436Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1177

  • default_group

    BotNet

  • 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

    f0d143be-967c-4293-98d3-3a1e128b5398

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    microsoftsecurity.sytes.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe
    "C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2428
    • C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe
      "{path}"
      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
      • Suspicious use of WriteProcessMemory
      PID:3732
    • C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe
      "{path}"
      2⤵
        PID:4316
      • C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe
        "{path}"
        2⤵
          PID:1692
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eBopYzBwUYOW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE10.tmp"
          2⤵
          • Creates scheduled task(s)
          PID:1476
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NAT Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFE6.tmp"
        1⤵
        • Creates scheduled task(s)
        PID:4404
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NAT Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFC6.tmp"
        1⤵
        • Creates scheduled task(s)
        PID:4176

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmpBE10.tmp

              Filesize

              1KB

              MD5

              3a2eceb8a3473fb926d61bcc8ce25bf2

              SHA1

              bc84685f7494437e41f819825416611d96145056

              SHA256

              f4ce62f408b7781fba0d5cb84995beabe1c4cc27e8ffeac51b200268e088fe7d

              SHA512

              b5974491002a3b204a1c2b5c89fc8c74b679f9083fc843d881635c5c7034a6fd0b3ceebf957f5561acc0d599f84593666a65b396c2ebdb72d30ae9e558e16ce6

            • memory/2428-12-0x0000000007680000-0x00000000076E6000-memory.dmp

              Filesize

              408KB

            • memory/2428-20-0x0000000074830000-0x0000000074FE0000-memory.dmp

              Filesize

              7.7MB

            • memory/2428-5-0x0000000004BC0000-0x0000000004BCA000-memory.dmp

              Filesize

              40KB

            • memory/2428-2-0x0000000005030000-0x00000000055D4000-memory.dmp

              Filesize

              5.6MB

            • memory/2428-6-0x0000000004CE0000-0x0000000004CE8000-memory.dmp

              Filesize

              32KB

            • memory/2428-7-0x0000000005E80000-0x0000000005F1C000-memory.dmp

              Filesize

              624KB

            • memory/2428-8-0x0000000074830000-0x0000000074FE0000-memory.dmp

              Filesize

              7.7MB

            • memory/2428-9-0x0000000004C60000-0x0000000004C70000-memory.dmp

              Filesize

              64KB

            • memory/2428-10-0x00000000077B0000-0x000000000783E000-memory.dmp

              Filesize

              568KB

            • memory/2428-1-0x0000000074830000-0x0000000074FE0000-memory.dmp

              Filesize

              7.7MB

            • memory/2428-4-0x0000000004C60000-0x0000000004C70000-memory.dmp

              Filesize

              64KB

            • memory/2428-0-0x00000000001C0000-0x0000000000270000-memory.dmp

              Filesize

              704KB

            • memory/2428-11-0x0000000007640000-0x000000000767E000-memory.dmp

              Filesize

              248KB

            • memory/2428-3-0x0000000004B20000-0x0000000004BB2000-memory.dmp

              Filesize

              584KB

            • memory/3732-19-0x0000000074830000-0x0000000074FE0000-memory.dmp

              Filesize

              7.7MB

            • memory/3732-16-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/3732-30-0x00000000056D0000-0x00000000056EE000-memory.dmp

              Filesize

              120KB

            • memory/3732-31-0x00000000056F0000-0x00000000056FA000-memory.dmp

              Filesize

              40KB

            • memory/3732-29-0x00000000054D0000-0x00000000054DA000-memory.dmp

              Filesize

              40KB

            • memory/3732-21-0x0000000005700000-0x0000000005710000-memory.dmp

              Filesize

              64KB

            • memory/3732-32-0x0000000074830000-0x0000000074FE0000-memory.dmp

              Filesize

              7.7MB

            • memory/3732-33-0x0000000005700000-0x0000000005710000-memory.dmp

              Filesize

              64KB