Analysis

  • max time kernel
    122s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30-10-2024 02:41

General

  • Target

    70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe

  • Size

    636KB

  • MD5

    10b98a933809918bfcdd9c1ea91edee6

  • SHA1

    4e5f1555f8030aab3e98fe7ef31c8083ba9e32f2

  • SHA256

    70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3

  • SHA512

    d5b735529dcc61cc92d2ca93a1b477f9e08901e903847ad68d9d63547c46f5d16f29deb3e329a981068be866167df4eeecf2f14f30ae04501b327c6aff6b2dac

  • SSDEEP

    12288:sMfzumQeZXgZ2KsYEPpU0TET/BSqxTsJXVl+N84xXF7NPTZW:ssnlwQgEPpUOEdpdSVlD4xVJPTc

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 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe
    "C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1832
    • 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\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2092
    • C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe
      "C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe"
      2⤵
        PID:1976
      • C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.exe
        "C:\Users\Admin\AppData\Local\Temp\70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3.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:2212
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFD24.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2952
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF08.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2816

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpFD24.tmp

      Filesize

      1KB

      MD5

      853f21539db999b660d95dbbe2a763b8

      SHA1

      8952586b9866c7f6568b23262ca079fa20993def

      SHA256

      01a2235fd7b266c76fe0ca8b729f05e151648baece5fb361273f0bc8f1af4b6d

      SHA512

      c17fce28622154fa2f6fc664ce97f88149e74b7ab0c368a839763f273739669ca1d6fc9b33c4bbe953b5bbf53e1fb0416beafbff5cdbfca9d97518ed3ec218a3

    • C:\Users\Admin\AppData\Local\Temp\tmpFF08.tmp

      Filesize

      1KB

      MD5

      21de6c3a6440d917bdbb4b491191d9b2

      SHA1

      c63c300affe7147910dc4544d2d5f3029bf321a6

      SHA256

      23af17733a3882cdd82a5bbc321d896b2430dc1bb4b4ac034d129cde5027afc4

      SHA512

      dcd1c464ed36593b990e072940ab415804ef8076743015fff4939211e30e436beb7ce6af3072769abe0214f737cedb210d2b45e6e90da20dac54c3945b11575f

    • memory/1832-22-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1832-1-0x0000000000120000-0x00000000001C6000-memory.dmp

      Filesize

      664KB

    • memory/1832-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1832-3-0x0000000000690000-0x00000000006AE000-memory.dmp

      Filesize

      120KB

    • memory/1832-4-0x00000000749FE000-0x00000000749FF000-memory.dmp

      Filesize

      4KB

    • memory/1832-5-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1832-6-0x0000000005DB0000-0x0000000005E2A000-memory.dmp

      Filesize

      488KB

    • memory/1832-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

      Filesize

      4KB

    • memory/2212-11-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-38-0x00000000006B0000-0x00000000006C2000-memory.dmp

      Filesize

      72KB

    • memory/2212-20-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-18-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-16-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2212-13-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-7-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-9-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2212-32-0x0000000000610000-0x000000000061A000-memory.dmp

      Filesize

      40KB

    • memory/2212-33-0x0000000000620000-0x000000000063E000-memory.dmp

      Filesize

      120KB

    • memory/2212-34-0x0000000000640000-0x000000000064A000-memory.dmp

      Filesize

      40KB

    • memory/2212-36-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/2212-21-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/2212-39-0x0000000000700000-0x000000000071A000-memory.dmp

      Filesize

      104KB

    • memory/2212-40-0x0000000000730000-0x000000000073E000-memory.dmp

      Filesize

      56KB

    • memory/2212-41-0x0000000000740000-0x0000000000752000-memory.dmp

      Filesize

      72KB

    • memory/2212-42-0x00000000009A0000-0x00000000009AC000-memory.dmp

      Filesize

      48KB

    • memory/2212-43-0x00000000009B0000-0x00000000009BE000-memory.dmp

      Filesize

      56KB

    • memory/2212-44-0x00000000009C0000-0x00000000009D4000-memory.dmp

      Filesize

      80KB

    • memory/2212-45-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/2212-46-0x00000000009F0000-0x0000000000A04000-memory.dmp

      Filesize

      80KB

    • memory/2212-47-0x0000000000A00000-0x0000000000A0E000-memory.dmp

      Filesize

      56KB

    • memory/2212-48-0x00000000043F0000-0x000000000441E000-memory.dmp

      Filesize

      184KB

    • memory/2212-49-0x00000000047F0000-0x0000000004804000-memory.dmp

      Filesize

      80KB