Resubmissions

04/12/2025, 11:23

251204-nhlj6sgk7x10

03/12/2025, 01:26

251203-btqxta1jcs10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    03/12/2025, 01:26

General

  • Target
    _c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3.exe
  • Size 795KB
  • Sample251203-btqxta1jcs
  • SHA256 c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • 192.227.217.229:7229

  • fexgmail.zapto.org:7229

Mutex
  • 86c0a97b-ad38-42e3-8308-eb6d7961b2a2

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    fexgmail.zapto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2025-09-12T00:59:11.355017936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7229

  • default_group

    VGC

  • 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

    86c0a97b-ad38-42e3-8308-eb6d7961b2a2

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    192.227.217.229

  • 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.

  • Nanocore family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 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 10 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 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\_c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3.exe
    "C:\Users\Admin\AppData\Local\Temp\_c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3720
    • 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\_c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1388
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4828
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkiEqnEQXdgAj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp69A2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3332
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:2144
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
          PID:1704
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:5060
      • C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe
        C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3312
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:3972
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2392
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkiEqnEQXdgAj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp28EB.tmp"
          2⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2924
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          2⤵
            PID:4316
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:3128

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
              • MD5 SHA1 SHA512

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 cac8b59dc6eefc2ae1fe9f37423064401e04ad390a8e0c3da65966429bf5d6ca
              • MD5 SHA1 SHA512 SSDEEP

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 4b08a37b4df5510a2d58bcd7e273c7efd215d1314677c2a79b775bcec5b80ae9
              • MD5 SHA1 SHA512 SSDEEP

              __PSScriptPolicyTest_whebzlmw.jjt.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_whebzlmw.jjt.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              tmp69A2.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\tmp69A2.tmp
              • Size 1KB
              • SHA256 de1e1abcf289cab59c4e37d699f6c95b8bc5c6ae59ca67ab085bbbb49f60162f
              • MD5 SHA1 SHA512

              TkiEqnEQXdgAj.exe

              • Path C:\Users\Admin\AppData\Roaming\TkiEqnEQXdgAj.exe
              • Size 795KB
              • SHA256 c430256840a5795787ab14b715a12c2ae98276425d418040c178d85c988de1f3
              • MD5 SHA1 SHA512 SSDEEP

              memory/1388-47-0x0000000006890000-0x00000000068C4000-memory.dmp

              memory/1388-21-0x00000000054D0000-0x0000000005536000-memory.dmp

              memory/1388-63-0x00000000074C0000-0x0000000007564000-memory.dmp

              memory/1388-14-0x0000000002BD0000-0x0000000002BE0000-memory.dmp

              memory/1388-15-0x0000000002BD0000-0x0000000002BE0000-memory.dmp

              memory/1388-13-0x0000000002AC0000-0x0000000002AF6000-memory.dmp

              memory/1388-16-0x0000000005570000-0x0000000005B9A000-memory.dmp

              memory/1388-48-0x0000000075710000-0x000000007575C000-memory.dmp

              memory/1388-81-0x00000000078B0000-0x0000000007946000-memory.dmp

              memory/1388-82-0x0000000007830000-0x0000000007841000-memory.dmp

              memory/1388-20-0x0000000005430000-0x0000000005452000-memory.dmp

              memory/1388-62-0x00000000068F0000-0x000000000690E000-memory.dmp

              memory/1388-22-0x0000000005BA0000-0x0000000005C06000-memory.dmp

              memory/1388-23-0x0000000005DD0000-0x0000000006127000-memory.dmp

              memory/1388-85-0x0000000007970000-0x000000000798A000-memory.dmp

              memory/1388-65-0x0000000007C60000-0x00000000082DA000-memory.dmp

              memory/1388-38-0x00000000062D0000-0x00000000062EE000-memory.dmp

              memory/1388-39-0x00000000065A0000-0x00000000065EC000-memory.dmp

              memory/2392-93-0x00000000056E0000-0x0000000005A37000-memory.dmp

              memory/2392-116-0x0000000075710000-0x000000007575C000-memory.dmp

              memory/2392-124-0x00000000071A0000-0x00000000071B1000-memory.dmp

              memory/2392-125-0x00000000071E0000-0x00000000071F5000-memory.dmp

              memory/3312-64-0x0000000005120000-0x0000000005132000-memory.dmp

              memory/3720-5-0x0000000005120000-0x00000000051BC000-memory.dmp

              memory/3720-2-0x0000000004E30000-0x0000000004EC2000-memory.dmp

              memory/3720-4-0x0000000004EE0000-0x0000000004EEA000-memory.dmp

              memory/3720-0-0x00000000002D0000-0x000000000039C000-memory.dmp

              memory/3720-1-0x0000000005300000-0x00000000058A6000-memory.dmp

              memory/3720-7-0x0000000004F80000-0x0000000004F90000-memory.dmp

              memory/3720-8-0x00000000068B0000-0x0000000006926000-memory.dmp

              memory/3720-3-0x0000000004F80000-0x0000000004F90000-memory.dmp

              memory/3720-6-0x0000000005100000-0x0000000005112000-memory.dmp

              memory/3972-109-0x0000000075710000-0x000000007575C000-memory.dmp

              memory/3972-123-0x0000000006CA0000-0x0000000006D44000-memory.dmp

              memory/4828-54-0x0000000075710000-0x000000007575C000-memory.dmp

              memory/4828-80-0x00000000078B0000-0x00000000078BA000-memory.dmp

              memory/4828-17-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

              memory/4828-83-0x0000000007A70000-0x0000000007A7E000-memory.dmp

              memory/4828-66-0x0000000007830000-0x000000000784A000-memory.dmp

              memory/4828-18-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

              memory/4828-86-0x0000000007B70000-0x0000000007B78000-memory.dmp

              memory/4828-84-0x0000000007A80000-0x0000000007A95000-memory.dmp

              memory/5060-78-0x0000000006D60000-0x0000000006D8E000-memory.dmp

              memory/5060-42-0x0000000006520000-0x000000000653E000-memory.dmp

              memory/5060-69-0x0000000006C90000-0x0000000006CAA000-memory.dmp

              memory/5060-70-0x0000000006CC0000-0x0000000006CCE000-memory.dmp

              memory/5060-71-0x0000000006CD0000-0x0000000006CE2000-memory.dmp

              memory/5060-36-0x0000000000400000-0x0000000000438000-memory.dmp

              memory/5060-72-0x0000000006CE0000-0x0000000006CEE000-memory.dmp

              memory/5060-68-0x0000000006C80000-0x0000000006C92000-memory.dmp

              memory/5060-74-0x0000000006D00000-0x0000000006D14000-memory.dmp

              memory/5060-75-0x0000000006D10000-0x0000000006D20000-memory.dmp

              memory/5060-76-0x0000000006D30000-0x0000000006D44000-memory.dmp

              memory/5060-77-0x0000000006D50000-0x0000000006D5E000-memory.dmp

              memory/5060-79-0x0000000006D90000-0x0000000006DA4000-memory.dmp

              memory/5060-41-0x0000000005A90000-0x0000000005A9A000-memory.dmp

              memory/5060-73-0x0000000006CF0000-0x0000000006CFC000-memory.dmp

              memory/5060-43-0x0000000006560000-0x000000000656A000-memory.dmp