Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-11-2024 04:07

General

  • Target

    a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe

  • Size

    767KB

  • MD5

    1ee4aca2ed3fbc7d17f8a86c751c1cc2

  • SHA1

    79fdfd56292f04c800afaa837b445e780355f3fb

  • SHA256

    a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80

  • SHA512

    2aa63b5a446b06d0e1149935ab3ea4803d797355ae4ac092abd5c3e7395bc9bb1dcd56f4489b144bffea42c916f9b22be250a09fd22634ba8de04a054cb7a910

  • SSDEEP

    12288:WAghZfmc9iuf6+U4yE4tbq8OzrO3D3GY76d0QQ9qUqkhwHGnpaU:bg/fz16+HyAziX700QQ9dqkhGsZ

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.

  • 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 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe
    "C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3320
    • 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\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1028
    • C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe
      "C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.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:1436
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF40.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1500
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp89.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bb44nowa.30j.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp89.tmp

    Filesize

    1KB

    MD5

    447ab194ab36cb1d20078d80e502b1b2

    SHA1

    a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

    SHA256

    8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

    SHA512

    49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

  • C:\Users\Admin\AppData\Local\Temp\tmpFF40.tmp

    Filesize

    1KB

    MD5

    6b8b04c891e2c91ec6d6f4360d0d3a12

    SHA1

    78d40859e9240ac3fb07ee3424f717ce9c89de82

    SHA256

    35fdc7656cb3f0270979d618d8ecd50b4f2325652dd2c476b9d727207b6e4dae

    SHA512

    998d0b637ffe6f110fcbf29a28c7d73a83de4b2f35c1ced4a0ac00032922c7e88ea9656de46f2522373bd5a671a92e9d7be46d8a080becc47ac5be4cbae05ceb

  • memory/1028-57-0x00000000060B0000-0x00000000060CE000-memory.dmp

    Filesize

    120KB

  • memory/1028-46-0x0000000006140000-0x0000000006172000-memory.dmp

    Filesize

    200KB

  • memory/1028-76-0x00000000070B0000-0x00000000070BE000-memory.dmp

    Filesize

    56KB

  • memory/1028-75-0x0000000007080000-0x0000000007091000-memory.dmp

    Filesize

    68KB

  • memory/1028-74-0x0000000007100000-0x0000000007196000-memory.dmp

    Filesize

    600KB

  • memory/1028-73-0x0000000006EF0000-0x0000000006EFA000-memory.dmp

    Filesize

    40KB

  • memory/1028-72-0x0000000006E80000-0x0000000006E9A000-memory.dmp

    Filesize

    104KB

  • memory/1028-71-0x00000000074C0000-0x0000000007B3A000-memory.dmp

    Filesize

    6.5MB

  • memory/1028-58-0x0000000006B70000-0x0000000006C13000-memory.dmp

    Filesize

    652KB

  • memory/1028-78-0x00000000071C0000-0x00000000071DA000-memory.dmp

    Filesize

    104KB

  • memory/1028-47-0x00000000706C0000-0x000000007070C000-memory.dmp

    Filesize

    304KB

  • memory/1028-77-0x00000000070C0000-0x00000000070D4000-memory.dmp

    Filesize

    80KB

  • memory/1028-16-0x0000000004580000-0x00000000045B6000-memory.dmp

    Filesize

    216KB

  • memory/1028-17-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1028-21-0x0000000004D40000-0x0000000005368000-memory.dmp

    Filesize

    6.2MB

  • memory/1028-22-0x0000000004B90000-0x0000000004BB2000-memory.dmp

    Filesize

    136KB

  • memory/1028-24-0x0000000005420000-0x0000000005486000-memory.dmp

    Filesize

    408KB

  • memory/1028-23-0x0000000004CB0000-0x0000000004D16000-memory.dmp

    Filesize

    408KB

  • memory/1028-79-0x00000000071A0000-0x00000000071A8000-memory.dmp

    Filesize

    32KB

  • memory/1028-34-0x0000000005590000-0x00000000058E4000-memory.dmp

    Filesize

    3.3MB

  • memory/1028-35-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1028-82-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1028-39-0x0000000005B60000-0x0000000005B7E000-memory.dmp

    Filesize

    120KB

  • memory/1028-40-0x00000000060D0000-0x000000000611C000-memory.dmp

    Filesize

    304KB

  • memory/1436-42-0x00000000055D0000-0x00000000055DA000-memory.dmp

    Filesize

    40KB

  • memory/1436-65-0x0000000006D00000-0x0000000006D14000-memory.dmp

    Filesize

    80KB

  • memory/1436-44-0x0000000006580000-0x000000000658A000-memory.dmp

    Filesize

    40KB

  • memory/1436-43-0x0000000006550000-0x000000000656E000-memory.dmp

    Filesize

    120KB

  • memory/1436-15-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-85-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-13-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1436-60-0x0000000006C90000-0x0000000006CA2000-memory.dmp

    Filesize

    72KB

  • memory/1436-61-0x0000000006CA0000-0x0000000006CBA000-memory.dmp

    Filesize

    104KB

  • memory/1436-66-0x0000000006D10000-0x0000000006D20000-memory.dmp

    Filesize

    64KB

  • memory/1436-70-0x0000000006D90000-0x0000000006DA4000-memory.dmp

    Filesize

    80KB

  • memory/1436-69-0x0000000006D60000-0x0000000006D8E000-memory.dmp

    Filesize

    184KB

  • memory/1436-68-0x0000000006D50000-0x0000000006D5E000-memory.dmp

    Filesize

    56KB

  • memory/1436-67-0x0000000006D20000-0x0000000006D34000-memory.dmp

    Filesize

    80KB

  • memory/1436-84-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-64-0x0000000006CF0000-0x0000000006CFE000-memory.dmp

    Filesize

    56KB

  • memory/1436-63-0x0000000006CE0000-0x0000000006CF2000-memory.dmp

    Filesize

    72KB

  • memory/1436-62-0x0000000006CD0000-0x0000000006CDE000-memory.dmp

    Filesize

    56KB

  • memory/3320-10-0x0000000004530000-0x00000000045AA000-memory.dmp

    Filesize

    488KB

  • memory/3320-9-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/3320-8-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

    Filesize

    4KB

  • memory/3320-7-0x0000000005080000-0x000000000509C000-memory.dmp

    Filesize

    112KB

  • memory/3320-6-0x0000000004E20000-0x0000000004EBC000-memory.dmp

    Filesize

    624KB

  • memory/3320-5-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB

  • memory/3320-4-0x0000000004B80000-0x0000000004B8A000-memory.dmp

    Filesize

    40KB

  • memory/3320-3-0x0000000004B90000-0x0000000004C22000-memory.dmp

    Filesize

    584KB

  • memory/3320-2-0x00000000050A0000-0x0000000005644000-memory.dmp

    Filesize

    5.6MB

  • memory/3320-1-0x00000000000A0000-0x0000000000166000-memory.dmp

    Filesize

    792KB

  • memory/3320-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

    Filesize

    4KB

  • memory/3320-14-0x0000000074A70000-0x0000000075220000-memory.dmp

    Filesize

    7.7MB