Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2024 13:25

General

  • Target

    e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe

  • Size

    831KB

  • MD5

    f9f3ee35f62eba494f4f755850617a85

  • SHA1

    2f01785e036cb476d67249bef9881b0116912309

  • SHA256

    e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870

  • SHA512

    6a44351b520b9a6869b695d1fe31aadd73dc099358ada5ace0882d883b94ff83ae990b247fb68f9cbb09f12f8bacc3202e5f4a0c90a4c2bad218254d263a97e9

  • SSDEEP

    24576:zq0qvumN3gUCTcpVfFBbsuYqwnB5t7UG4DL:zqwmtgUZpVgpqwn17eDL

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

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • 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.

  • 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
  • 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 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe
    "C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:316
    • 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\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3792
    • C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe
      "C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe"
      2⤵
        PID:1916
      • C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe
        "C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.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:1820
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3747.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2304
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp39B9.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:796

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f3ysdkmj.gvi.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp3747.tmp

      Filesize

      1KB

      MD5

      7a5b2999f1100d2c6783bba14fbd9c1a

      SHA1

      5823601acfe4e5da055eb2a42364b85cb894ce2f

      SHA256

      f41bc60f4470994c3841458440cdeaf105afea2b5984d8742f8da4375babf2c3

      SHA512

      cee623fe27d8b4ad31b53e1587194b5b3316632f05572033c538db6b21cc2ce73f128bd8eb6476e355650d6ffaf9a7c4aeda4e71f3c8bfb7bacb07875428679e

    • C:\Users\Admin\AppData\Local\Temp\tmp39B9.tmp

      Filesize

      1KB

      MD5

      0479d5f304ef2d7e3c15fb24a99f88c1

      SHA1

      8edbb1450a656fac5f5e96779ffe440ee8c1aec9

      SHA256

      112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

      SHA512

      537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

    • memory/316-10-0x0000000002F70000-0x0000000002FEA000-memory.dmp

      Filesize

      488KB

    • memory/316-14-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/316-5-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/316-6-0x00000000058F0000-0x000000000598C000-memory.dmp

      Filesize

      624KB

    • memory/316-7-0x000000007483E000-0x000000007483F000-memory.dmp

      Filesize

      4KB

    • memory/316-8-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/316-9-0x00000000069C0000-0x00000000069DC000-memory.dmp

      Filesize

      112KB

    • memory/316-0-0x000000007483E000-0x000000007483F000-memory.dmp

      Filesize

      4KB

    • memory/316-1-0x0000000000B80000-0x0000000000C56000-memory.dmp

      Filesize

      856KB

    • memory/316-4-0x0000000005660000-0x000000000566A000-memory.dmp

      Filesize

      40KB

    • memory/316-2-0x0000000005BA0000-0x0000000006144000-memory.dmp

      Filesize

      5.6MB

    • memory/316-3-0x0000000005690000-0x0000000005722000-memory.dmp

      Filesize

      584KB

    • memory/1820-71-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1820-43-0x00000000051C0000-0x00000000051CA000-memory.dmp

      Filesize

      40KB

    • memory/1820-44-0x0000000006290000-0x00000000062AE000-memory.dmp

      Filesize

      120KB

    • memory/1820-45-0x00000000062B0000-0x00000000062BA000-memory.dmp

      Filesize

      40KB

    • memory/1820-20-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1820-13-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1820-72-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1820-11-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/3792-37-0x0000000006400000-0x0000000006754000-memory.dmp

      Filesize

      3.3MB

    • memory/3792-59-0x00000000081C0000-0x000000000883A000-memory.dmp

      Filesize

      6.5MB

    • memory/3792-34-0x00000000062B0000-0x0000000006316000-memory.dmp

      Filesize

      408KB

    • memory/3792-38-0x0000000006850000-0x000000000686E000-memory.dmp

      Filesize

      120KB

    • memory/3792-39-0x0000000006900000-0x000000000694C000-memory.dmp

      Filesize

      304KB

    • memory/3792-28-0x00000000060D0000-0x00000000060F2000-memory.dmp

      Filesize

      136KB

    • memory/3792-19-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3792-17-0x0000000005930000-0x0000000005F58000-memory.dmp

      Filesize

      6.2MB

    • memory/3792-18-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3792-47-0x00000000703F0000-0x000000007043C000-memory.dmp

      Filesize

      304KB

    • memory/3792-46-0x00000000077F0000-0x0000000007822000-memory.dmp

      Filesize

      200KB

    • memory/3792-57-0x00000000077D0000-0x00000000077EE000-memory.dmp

      Filesize

      120KB

    • memory/3792-58-0x0000000007840000-0x00000000078E3000-memory.dmp

      Filesize

      652KB

    • memory/3792-35-0x0000000006390000-0x00000000063F6000-memory.dmp

      Filesize

      408KB

    • memory/3792-60-0x0000000007B70000-0x0000000007B8A000-memory.dmp

      Filesize

      104KB

    • memory/3792-61-0x0000000007BF0000-0x0000000007BFA000-memory.dmp

      Filesize

      40KB

    • memory/3792-62-0x0000000007DF0000-0x0000000007E86000-memory.dmp

      Filesize

      600KB

    • memory/3792-63-0x0000000007D70000-0x0000000007D81000-memory.dmp

      Filesize

      68KB

    • memory/3792-64-0x0000000007DA0000-0x0000000007DAE000-memory.dmp

      Filesize

      56KB

    • memory/3792-65-0x0000000007DB0000-0x0000000007DC4000-memory.dmp

      Filesize

      80KB

    • memory/3792-66-0x0000000007EB0000-0x0000000007ECA000-memory.dmp

      Filesize

      104KB

    • memory/3792-67-0x0000000007E90000-0x0000000007E98000-memory.dmp

      Filesize

      32KB

    • memory/3792-70-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3792-16-0x0000000074830000-0x0000000074FE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3792-15-0x00000000052C0000-0x00000000052F6000-memory.dmp

      Filesize

      216KB