Analysis

  • max time kernel
    29s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2024 01:04

General

  • Target

    50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe

  • Size

    797KB

  • MD5

    d1f751f50be38431133c464db71bd107

  • SHA1

    88f9ae16f1c1690da3a11b75c73dfddd57eed352

  • SHA256

    50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170

  • SHA512

    76ca1fd81b70c4fc7f19d520abf50533f2884b569706c189a486ee5bc5d5be58ed93297573424cd4ec741d4b11787f0a8814727cc1225853537feb278a21593a

  • SSDEEP

    12288:a1AP1lqeixSQWj08orjBcXhiktRmoMQdnjq/xeZAPEtDXx1PpIyh:7lqel/4rjB3BoMQdnjq/MuEdPpvh

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

66.63.187.113:1664

Mutex

a376f716-2f77-4943-a431-3a3bcb53b7c0

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    66.63.187.113

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-08-05T03:49:33.827385136Z

  • 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

    1664

  • default_group

    CAT

  • 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

    a376f716-2f77-4943-a431-3a3bcb53b7c0

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    66.63.187.113

  • primary_dns_server

    8.8.8.8

  • 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.

  • Nanocore family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe
    "C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2812
    • C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe
      "C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe"
      2⤵
        PID:2852
      • C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe
        "C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe"
        2⤵
          PID:2808
        • C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe
          "C:\Users\Admin\AppData\Local\Temp\50129f457a6d27972ba602a8e3eb1fef29e1bc9f7bc8eda34fc93b734593b170.exe"
          2⤵
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2744
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC948.tmp"
            3⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:408
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "PCI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCA43.tmp"
            3⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2052

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpC948.tmp

        Filesize

        1KB

        MD5

        c1ff66cd764f8d80380c6bab86363f33

        SHA1

        2d2603281094b562847b3cd92825bc65e4fb1b86

        SHA256

        eb5aca7c63474694139081c86020981fc7c36ed289f5573686b1fe237ce94127

        SHA512

        7b4a4ca9cc396c1e197c2e2657fa306008a14851678069732d37ccf7b520d1bee9e4c86b7d75c34f8b8ee348fdb702e9753d0fef5b503ea017f60fd7c0eac144

      • C:\Users\Admin\AppData\Local\Temp\tmpCA43.tmp

        Filesize

        1KB

        MD5

        bbb0d424bb7cb3b0e6aeb68cf82b8f5f

        SHA1

        7e95dcd21a27ee53e5c23ed5a163df56a43d572a

        SHA256

        08d6bee474edf0151a0d8ff942ba9e6a1efe069585c63477abd1c7bd8046e130

        SHA512

        0dc790a415f9717f6e7633c1d5f2749a2eca5582c5bbe114119c3ddba6d4e4d0df48029622e2fe07f94d8ae97c334b88691b7721da50ada261449769ae31d466

      • memory/2524-23-0x00000000747A0000-0x0000000074E8E000-memory.dmp

        Filesize

        6.9MB

      • memory/2524-1-0x0000000000900000-0x00000000009CE000-memory.dmp

        Filesize

        824KB

      • memory/2524-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

        Filesize

        6.9MB

      • memory/2524-3-0x00000000003E0000-0x00000000003FC000-memory.dmp

        Filesize

        112KB

      • memory/2524-4-0x00000000747AE000-0x00000000747AF000-memory.dmp

        Filesize

        4KB

      • memory/2524-5-0x00000000747A0000-0x0000000074E8E000-memory.dmp

        Filesize

        6.9MB

      • memory/2524-6-0x00000000007F0000-0x000000000086A000-memory.dmp

        Filesize

        488KB

      • memory/2524-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

        Filesize

        4KB

      • memory/2744-22-0x00000000747A0000-0x0000000074E8E000-memory.dmp

        Filesize

        6.9MB

      • memory/2744-35-0x00000000004C0000-0x00000000004CA000-memory.dmp

        Filesize

        40KB

      • memory/2744-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2744-13-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-11-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-9-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-19-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-21-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-7-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-33-0x0000000000450000-0x000000000045A000-memory.dmp

        Filesize

        40KB

      • memory/2744-34-0x0000000000460000-0x000000000047E000-memory.dmp

        Filesize

        120KB

      • memory/2744-17-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2744-38-0x00000000004F0000-0x0000000000502000-memory.dmp

        Filesize

        72KB

      • memory/2744-39-0x00000000006F0000-0x000000000070A000-memory.dmp

        Filesize

        104KB

      • memory/2744-40-0x0000000000710000-0x000000000071E000-memory.dmp

        Filesize

        56KB

      • memory/2744-42-0x0000000000810000-0x000000000081E000-memory.dmp

        Filesize

        56KB

      • memory/2744-41-0x0000000000720000-0x0000000000732000-memory.dmp

        Filesize

        72KB

      • memory/2744-44-0x0000000000840000-0x0000000000850000-memory.dmp

        Filesize

        64KB

      • memory/2744-43-0x0000000000830000-0x0000000000844000-memory.dmp

        Filesize

        80KB

      • memory/2744-45-0x0000000000850000-0x0000000000864000-memory.dmp

        Filesize

        80KB

      • memory/2744-46-0x0000000000860000-0x000000000086E000-memory.dmp

        Filesize

        56KB

      • memory/2744-48-0x00000000021A0000-0x00000000021B4000-memory.dmp

        Filesize

        80KB

      • memory/2744-47-0x0000000004A30000-0x0000000004A5E000-memory.dmp

        Filesize

        184KB

      • memory/2744-50-0x00000000747A0000-0x0000000074E8E000-memory.dmp

        Filesize

        6.9MB