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
    01-11-2024 05:18

General

  • Target

    8e2827146c4c433affba78c88fd685db.exe

  • Size

    758KB

  • MD5

    8e2827146c4c433affba78c88fd685db

  • SHA1

    de632114a70a9ad4b16ed686e48477f398531ae0

  • SHA256

    058e2c02b8cfb93b480ea8cfac08e967b39631a579256ebee27fb7472194c1ea

  • SHA512

    ba45a34ecb7d176392c43cd8b80d8181e77f1cc6536459163439a4456389a6208e053bc6a449f7974595d44b69a269833958bfe1ede7498f31538b84ddbff151

  • SSDEEP

    12288:fn9InteYPjOFGGCA2ythZoESN0vXMgmW3oSrnvuiYZftZvskj2/Q4AyrrRPdh:fEPtpy/2ESNimW3oovZYB2o4JPd

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\8e2827146c4c433affba78c88fd685db.exe
    "C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2208
    • 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\8e2827146c4c433affba78c88fd685db.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1824
    • C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.exe
      "C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.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:3936
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC208.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3392
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC739.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3124

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8e2827146c4c433affba78c88fd685db.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qarzmh44.4sq.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC208.tmp

    Filesize

    1KB

    MD5

    08c69c4c90c9dc132cca5b405f300c6a

    SHA1

    4e3f54b70e448a400880101e1068e1fbeeefa624

    SHA256

    4074632002d0a339832ce7dee2cca7c9ca6b0fe4405a43cd971decb81541701f

    SHA512

    7a7b300706631b455fa811aa4a868ad72cd3b4605928e22eeafbc126f6901219ae8d3b059fd363c5bf678c8b858b6362ca8140cbb929c204d269c233d85e09f1

  • C:\Users\Admin\AppData\Local\Temp\tmpC739.tmp

    Filesize

    1KB

    MD5

    447ab194ab36cb1d20078d80e502b1b2

    SHA1

    a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

    SHA256

    8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

    SHA512

    49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

  • memory/1824-45-0x0000000006050000-0x000000000609C000-memory.dmp

    Filesize

    304KB

  • memory/1824-80-0x0000000007690000-0x00000000076AA000-memory.dmp

    Filesize

    104KB

  • memory/1824-44-0x0000000006010000-0x000000000602E000-memory.dmp

    Filesize

    120KB

  • memory/1824-81-0x0000000007670000-0x0000000007678000-memory.dmp

    Filesize

    32KB

  • memory/1824-79-0x0000000007590000-0x00000000075A4000-memory.dmp

    Filesize

    80KB

  • memory/1824-78-0x0000000007580000-0x000000000758E000-memory.dmp

    Filesize

    56KB

  • memory/1824-77-0x0000000007550000-0x0000000007561000-memory.dmp

    Filesize

    68KB

  • memory/1824-76-0x00000000075D0000-0x0000000007666000-memory.dmp

    Filesize

    600KB

  • memory/1824-75-0x00000000073C0000-0x00000000073CA000-memory.dmp

    Filesize

    40KB

  • memory/1824-47-0x00000000065F0000-0x0000000006622000-memory.dmp

    Filesize

    200KB

  • memory/1824-61-0x0000000007350000-0x000000000736A000-memory.dmp

    Filesize

    104KB

  • memory/1824-16-0x00000000026F0000-0x0000000002726000-memory.dmp

    Filesize

    216KB

  • memory/1824-17-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1824-18-0x00000000052E0000-0x0000000005908000-memory.dmp

    Filesize

    6.2MB

  • memory/1824-19-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1824-21-0x0000000005170000-0x00000000051D6000-memory.dmp

    Filesize

    408KB

  • memory/1824-22-0x0000000005910000-0x0000000005976000-memory.dmp

    Filesize

    408KB

  • memory/1824-59-0x0000000007210000-0x00000000072B3000-memory.dmp

    Filesize

    652KB

  • memory/1824-20-0x0000000005050000-0x0000000005072000-memory.dmp

    Filesize

    136KB

  • memory/1824-58-0x0000000006630000-0x000000000664E000-memory.dmp

    Filesize

    120KB

  • memory/1824-36-0x0000000005B80000-0x0000000005ED4000-memory.dmp

    Filesize

    3.3MB

  • memory/1824-48-0x00000000709D0000-0x0000000070A1C000-memory.dmp

    Filesize

    304KB

  • memory/1824-60-0x0000000007990000-0x000000000800A000-memory.dmp

    Filesize

    6.5MB

  • memory/1824-85-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2208-10-0x00000000031D0000-0x000000000324A000-memory.dmp

    Filesize

    488KB

  • memory/2208-6-0x0000000005B30000-0x0000000005BCC000-memory.dmp

    Filesize

    624KB

  • memory/2208-7-0x0000000006B30000-0x0000000006B4C000-memory.dmp

    Filesize

    112KB

  • memory/2208-5-0x0000000005A40000-0x0000000005A4A000-memory.dmp

    Filesize

    40KB

  • memory/2208-1-0x0000000000DF0000-0x0000000000EB4000-memory.dmp

    Filesize

    784KB

  • memory/2208-2-0x0000000005E50000-0x00000000063F4000-memory.dmp

    Filesize

    5.6MB

  • memory/2208-3-0x00000000058A0000-0x0000000005932000-memory.dmp

    Filesize

    584KB

  • memory/2208-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

    Filesize

    4KB

  • memory/2208-8-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

    Filesize

    4KB

  • memory/2208-9-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2208-15-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2208-4-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-14-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-66-0x0000000006D70000-0x0000000006D82000-memory.dmp

    Filesize

    72KB

  • memory/3936-87-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-73-0x0000000006E00000-0x0000000006E2E000-memory.dmp

    Filesize

    184KB

  • memory/3936-74-0x0000000006E30000-0x0000000006E44000-memory.dmp

    Filesize

    80KB

  • memory/3936-68-0x0000000006D90000-0x0000000006D9E000-memory.dmp

    Filesize

    56KB

  • memory/3936-72-0x0000000006DF0000-0x0000000006DFE000-memory.dmp

    Filesize

    56KB

  • memory/3936-70-0x0000000006DB0000-0x0000000006DC0000-memory.dmp

    Filesize

    64KB

  • memory/3936-67-0x0000000006D80000-0x0000000006D8C000-memory.dmp

    Filesize

    48KB

  • memory/3936-69-0x0000000006DA0000-0x0000000006DB4000-memory.dmp

    Filesize

    80KB

  • memory/3936-65-0x0000000006D60000-0x0000000006D6E000-memory.dmp

    Filesize

    56KB

  • memory/3936-63-0x0000000006D20000-0x0000000006D32000-memory.dmp

    Filesize

    72KB

  • memory/3936-42-0x00000000058E0000-0x00000000058FE000-memory.dmp

    Filesize

    120KB

  • memory/3936-64-0x0000000006D30000-0x0000000006D4A000-memory.dmp

    Filesize

    104KB

  • memory/3936-43-0x0000000006700000-0x000000000670A000-memory.dmp

    Filesize

    40KB

  • memory/3936-24-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3936-41-0x0000000005770000-0x000000000577A000-memory.dmp

    Filesize

    40KB

  • memory/3936-86-0x0000000074DF0000-0x00000000755A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-71-0x0000000006DD0000-0x0000000006DE4000-memory.dmp

    Filesize

    80KB