Analysis

  • max time kernel
    134s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26/12/2023, 18:26

General

  • Target

    840ef8d2d1936ebf66e63f85c7dece42.exe

  • Size

    1.9MB

  • MD5

    840ef8d2d1936ebf66e63f85c7dece42

  • SHA1

    f4770a5e987d15d1615c40ef40f3a96098c0e8c2

  • SHA256

    6dad4f5325f635039e443e725ddaf3eb210952b0ebe81027dae9f9fb0a09e831

  • SHA512

    91443a07773e48dff09cc5ff768278c54690b45dd1d9519c49f9eb51eca928f2a55a9388aafc66584ca4d12b6f6ec8516ac133b6b562972e7cf71ecd3d41ad43

  • SSDEEP

    6144:hl4uX/nkpB6i+WCWm9R+bM3WIVc7giHomaXXxB6IoeO0nSW/iYPEeuCZAA2iPIZd:hPtsU+bYWqBRoeT//iKsKtb

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

omaprilcode.duckdns.org:8090

Mutex

f8dffc54-5ec5-4013-9de8-d8d853682f44

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    omaprilcode.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-01-26T15:04:24.913843336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8090

  • default_group

    CODEDBASE

  • 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

    f8dffc54-5ec5-4013-9de8-d8d853682f44

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    omaprilcode.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Windows security bypass 2 TTPs 3 IoCs
  • Windows security modification 2 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 10 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).

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe
    "C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe"
    1⤵
    • Windows security bypass
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Program Files\Common Files\System\IfB44785yo4aR44dco3pdD14W\svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2644
    • 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\840ef8d2d1936ebf66e63f85c7dece42.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2780
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Program Files\Common Files\System\IfB44785yo4aR44dco3pdD14W\svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2748
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:588
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:2040
    • C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe
      "C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe"
      2⤵
        PID:688
      • C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe
        "C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe"
        2⤵
          PID:380
        • C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe
          "C:\Users\Admin\AppData\Local\Temp\840ef8d2d1936ebf66e63f85c7dece42.exe"
          2⤵
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:1472
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 540
          2⤵
          • Program crash
          PID:2332

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

              Filesize

              7KB

              MD5

              b34658f22668a6fe56131681fc549e2a

              SHA1

              4cd335909f463688f2e4e17f18746311eea8a005

              SHA256

              2b7fc3d7c2a6738b52000b4bf9fdad6492ed8629139d7dc872d9a9213f3565fb

              SHA512

              34f66f9c441f744731d4329319b7c55dd9b01a748c378f3fac1636d6bb7b120e7db5e1acb23d8d682a3e838885f2466ea1a1acd3640bee59ad2e3f44e13c041b

            • memory/1472-40-0x0000000074910000-0x0000000074FFE000-memory.dmp

              Filesize

              6.9MB

            • memory/1472-36-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-44-0x0000000000460000-0x000000000047E000-memory.dmp

              Filesize

              120KB

            • memory/1472-48-0x0000000074910000-0x0000000074FFE000-memory.dmp

              Filesize

              6.9MB

            • memory/1472-43-0x0000000000450000-0x000000000045A000-memory.dmp

              Filesize

              40KB

            • memory/1472-41-0x00000000003A0000-0x00000000003E0000-memory.dmp

              Filesize

              256KB

            • memory/1472-34-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-29-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-45-0x0000000000480000-0x000000000048A000-memory.dmp

              Filesize

              40KB

            • memory/1472-28-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-39-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-30-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB

            • memory/1472-26-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/1472-27-0x0000000000400000-0x000000000043A000-memory.dmp

              Filesize

              232KB

            • memory/2644-37-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2644-23-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2644-19-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2748-33-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2748-22-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2748-17-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2748-21-0x0000000002580000-0x00000000025C0000-memory.dmp

              Filesize

              256KB

            • memory/2748-24-0x0000000002580000-0x00000000025C0000-memory.dmp

              Filesize

              256KB

            • memory/2780-20-0x00000000027D0000-0x0000000002810000-memory.dmp

              Filesize

              256KB

            • memory/2780-25-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2780-32-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2780-18-0x000000006F7C0000-0x000000006FD6B000-memory.dmp

              Filesize

              5.7MB

            • memory/2992-0-0x0000000000BD0000-0x0000000000DC2000-memory.dmp

              Filesize

              1.9MB

            • memory/2992-3-0x0000000002310000-0x00000000023B2000-memory.dmp

              Filesize

              648KB

            • memory/2992-2-0x0000000000490000-0x00000000004D0000-memory.dmp

              Filesize

              256KB

            • memory/2992-46-0x0000000074910000-0x0000000074FFE000-memory.dmp

              Filesize

              6.9MB

            • memory/2992-47-0x0000000000490000-0x00000000004D0000-memory.dmp

              Filesize

              256KB

            • memory/2992-1-0x0000000074910000-0x0000000074FFE000-memory.dmp

              Filesize

              6.9MB