Analysis

  • max time kernel
    134s
  • 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
    04-11-2024 10:34

General

  • Target

    2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe

  • Size

    720KB

  • MD5

    782965f857a2c2dbc179b7e016386f61

  • SHA1

    3d16a97e2733daa4c2313035e134e763497bb948

  • SHA256

    2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a

  • SHA512

    a1c98f6c20b9b5692069ac79d43ed06481faf963da10ad24b83bf4d76c44db2fca87e5237205be1767b83781ea63e0d8993dfc86bb08743e6756482771e01272

  • SSDEEP

    12288:2lx+dhZfm1NjNJrhCByke+7/wrhQUKLxfguWTe/OSzT7Ad9hg7pzm9owtSE3:w+d/f+Njt+7IrylxfguWTelK39oL

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\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe
    "C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3948
    • 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\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3920
    • C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe
      "C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.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:4240
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1921.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4760
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1F8A.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eemkyfto.0lk.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp1921.tmp

    Filesize

    1KB

    MD5

    df4d0e9c3f264d12150e22239d449c59

    SHA1

    90649a3bb8a2853535b8944966adf577192f6698

    SHA256

    2d2ad709a852677b5174d6831d875fd009a38a7df6d8e4b17b97beff2a3d5550

    SHA512

    59110fb883f45870a5e482f1c3c0344707cd9466e56867818fa0c652f8faa145fa423d34b0ee36a4457cd142b94acc693b1a9ed8f853bccb39dc08826797a469

  • C:\Users\Admin\AppData\Local\Temp\tmp1F8A.tmp

    Filesize

    1KB

    MD5

    6b30dba7972c92c9a1b881e88c108b15

    SHA1

    f76207985cc5a1f70edb2fb5bd45678f195a4564

    SHA256

    578f5b0ff051f02f8e0a67fc3424dad554fa9489875475ea624fbb63eabfcbf7

    SHA512

    e3dd368937f863cb07453de12173580fb63b8d3983db7119c24860f227c89ded76401c47607f5b1134d215d46fe2b40d4bc3d7299374f1e8abecdeaefc7b9099

  • memory/3920-80-0x0000000007840000-0x0000000007854000-memory.dmp

    Filesize

    80KB

  • memory/3920-19-0x0000000005420000-0x0000000005A48000-memory.dmp

    Filesize

    6.2MB

  • memory/3920-59-0x0000000007290000-0x00000000072AE000-memory.dmp

    Filesize

    120KB

  • memory/3920-49-0x0000000070660000-0x00000000706AC000-memory.dmp

    Filesize

    304KB

  • memory/3920-48-0x0000000007250000-0x0000000007282000-memory.dmp

    Filesize

    200KB

  • memory/3920-79-0x0000000007830000-0x000000000783E000-memory.dmp

    Filesize

    56KB

  • memory/3920-73-0x0000000007C40000-0x00000000082BA000-memory.dmp

    Filesize

    6.5MB

  • memory/3920-90-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3920-78-0x0000000007800000-0x0000000007811000-memory.dmp

    Filesize

    68KB

  • memory/3920-87-0x0000000007920000-0x0000000007928000-memory.dmp

    Filesize

    32KB

  • memory/3920-76-0x0000000007880000-0x0000000007916000-memory.dmp

    Filesize

    600KB

  • memory/3920-16-0x0000000004D40000-0x0000000004D76000-memory.dmp

    Filesize

    216KB

  • memory/3920-18-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3920-63-0x00000000074C0000-0x0000000007563000-memory.dmp

    Filesize

    652KB

  • memory/3920-17-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3920-81-0x0000000007940000-0x000000000795A000-memory.dmp

    Filesize

    104KB

  • memory/3920-21-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3920-24-0x0000000005B50000-0x0000000005B72000-memory.dmp

    Filesize

    136KB

  • memory/3920-75-0x0000000007670000-0x000000000767A000-memory.dmp

    Filesize

    40KB

  • memory/3920-27-0x0000000005C90000-0x0000000005CF6000-memory.dmp

    Filesize

    408KB

  • memory/3920-26-0x0000000005C20000-0x0000000005C86000-memory.dmp

    Filesize

    408KB

  • memory/3920-74-0x0000000007600000-0x000000000761A000-memory.dmp

    Filesize

    104KB

  • memory/3920-38-0x0000000005E80000-0x00000000061D4000-memory.dmp

    Filesize

    3.3MB

  • memory/3920-39-0x00000000062D0000-0x00000000062EE000-memory.dmp

    Filesize

    120KB

  • memory/3920-42-0x0000000006380000-0x00000000063CC000-memory.dmp

    Filesize

    304KB

  • memory/3948-10-0x0000000005070000-0x00000000050EA000-memory.dmp

    Filesize

    488KB

  • memory/3948-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

    Filesize

    4KB

  • memory/3948-15-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3948-9-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3948-8-0x00000000749FE000-0x00000000749FF000-memory.dmp

    Filesize

    4KB

  • memory/3948-7-0x0000000005910000-0x000000000592C000-memory.dmp

    Filesize

    112KB

  • memory/3948-6-0x0000000005980000-0x0000000005A1C000-memory.dmp

    Filesize

    624KB

  • memory/3948-5-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3948-4-0x0000000005670000-0x000000000567A000-memory.dmp

    Filesize

    40KB

  • memory/3948-3-0x0000000005740000-0x00000000057D2000-memory.dmp

    Filesize

    584KB

  • memory/3948-2-0x0000000005C50000-0x00000000061F4000-memory.dmp

    Filesize

    5.6MB

  • memory/3948-1-0x0000000000BD0000-0x0000000000C8A000-memory.dmp

    Filesize

    744KB

  • memory/4240-44-0x0000000006810000-0x000000000681A000-memory.dmp

    Filesize

    40KB

  • memory/4240-71-0x00000000070C0000-0x00000000070EE000-memory.dmp

    Filesize

    184KB

  • memory/4240-70-0x00000000070B0000-0x00000000070BE000-memory.dmp

    Filesize

    56KB

  • memory/4240-69-0x0000000007080000-0x0000000007094000-memory.dmp

    Filesize

    80KB

  • memory/4240-67-0x0000000007060000-0x0000000007074000-memory.dmp

    Filesize

    80KB

  • memory/4240-66-0x0000000007050000-0x000000000705E000-memory.dmp

    Filesize

    56KB

  • memory/4240-65-0x0000000007040000-0x0000000007052000-memory.dmp

    Filesize

    72KB

  • memory/4240-72-0x00000000070F0000-0x0000000007104000-memory.dmp

    Filesize

    80KB

  • memory/4240-68-0x0000000007070000-0x0000000007080000-memory.dmp

    Filesize

    64KB

  • memory/4240-64-0x0000000007030000-0x000000000703E000-memory.dmp

    Filesize

    56KB

  • memory/4240-61-0x0000000006FF0000-0x0000000007002000-memory.dmp

    Filesize

    72KB

  • memory/4240-62-0x0000000007000000-0x000000000701A000-memory.dmp

    Filesize

    104KB

  • memory/4240-45-0x00000000068A0000-0x00000000068BE000-memory.dmp

    Filesize

    120KB

  • memory/4240-46-0x00000000068D0000-0x00000000068DA000-memory.dmp

    Filesize

    40KB

  • memory/4240-20-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4240-14-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4240-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4240-91-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4240-92-0x00000000749F0000-0x00000000751A0000-memory.dmp

    Filesize

    7.7MB