Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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.

  • 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 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eBopYzBwUYOW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE3BA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2596
    • 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:2536
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp168.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:572
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2897.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2112

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp168.tmp

          Filesize

          1KB

          MD5

          b938545ec264ac88cd1cc5fee7065554

          SHA1

          b8100bc5c9d5b1116e171516092d474b0943f5d8

          SHA256

          2c2b2d9082ffec52a5e88af31b120ef3b6754adfc2c337587a29864d746b5584

          SHA512

          604034c52b1f7b796a631d770b28763e475dad3b65c8f5ebc04281f97bc1e449c2a7edb9b4c26a25dac1aedef35e0d5770f4e4d985cd425dc928826971a576af

        • C:\Users\Admin\AppData\Local\Temp\tmpE3BA.tmp

          Filesize

          1KB

          MD5

          28331d17c88749bd38944ddfe076dace

          SHA1

          cab0e7314bef60c91b32f6f0a40742986599bc3a

          SHA256

          cc6f68146b86e21f82597359d8f8f762074baaff2f601e1056945f6413aaa38d

          SHA512

          6052ab0c7035607cafa49290f9700f08b9d8009ad03917a4f9a53dd1648aa58c1cf88a5d03057ff9f4a97a36712783f6f80719ce1794e46b436d3540e8b65af6

        • memory/1768-26-0x0000000074AC0000-0x00000000751AE000-memory.dmp

          Filesize

          6.9MB

        • memory/1768-3-0x00000000008A0000-0x00000000008A8000-memory.dmp

          Filesize

          32KB

        • memory/1768-4-0x0000000074AC0000-0x00000000751AE000-memory.dmp

          Filesize

          6.9MB

        • memory/1768-5-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/1768-6-0x0000000005240000-0x00000000052CE000-memory.dmp

          Filesize

          568KB

        • memory/1768-7-0x0000000004B30000-0x0000000004B6E000-memory.dmp

          Filesize

          248KB

        • memory/1768-1-0x0000000074AC0000-0x00000000751AE000-memory.dmp

          Filesize

          6.9MB

        • memory/1768-0-0x0000000000FF0000-0x00000000010A0000-memory.dmp

          Filesize

          704KB

        • memory/1768-2-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2536-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2536-20-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-13-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-11-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-22-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-24-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-25-0x0000000074AC0000-0x00000000751AE000-memory.dmp

          Filesize

          6.9MB

        • memory/2536-15-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-27-0x0000000004C50000-0x0000000004C90000-memory.dmp

          Filesize

          256KB

        • memory/2536-17-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2536-34-0x0000000074AC0000-0x00000000751AE000-memory.dmp

          Filesize

          6.9MB

        • memory/2536-35-0x0000000004C50000-0x0000000004C90000-memory.dmp

          Filesize

          256KB

        • memory/2536-36-0x0000000000950000-0x000000000095A000-memory.dmp

          Filesize

          40KB

        • memory/2536-37-0x0000000000960000-0x000000000097E000-memory.dmp

          Filesize

          120KB

        • memory/2536-38-0x0000000000980000-0x000000000098A000-memory.dmp

          Filesize

          40KB