Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 08:28

General

  • Target
    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
  • Size 945KB
  • Sample240511-kdfatagh8x
  • SHA256 ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • december2nd.ddns.net:65024

  • december2n.duckdns.org:65024

Mutex
  • 2c009a56-c28c-48f4-8875-acf9e1222e9f

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2n.duckdns.org

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-17T09:12:36.211032636Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    65024

  • default_group

    NO GREE

  • 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

    2c009a56-c28c-48f4-8875-acf9e1222e9f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2nd.ddns.net

  • primary_dns_server

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 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
  • 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).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
    "C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2752
    • 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1716
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fupTmRCVq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1108
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3861.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3200
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3E6B.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:5048
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp412C.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4704
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4488,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=3980 /prefetch:8
    1⤵
      PID:4564

    Network

          MITRE ATT&CK Enterprise v15

          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 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
          • MD5 SHA1 SHA512

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 18KB
          • SHA256 2d282f3cd1728f305c187fadbfe479b9c652abaa4a98f24d4747b7728c487164
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_1fkusix0.tza.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1fkusix0.tza.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          tmp3861.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmp3861.tmp
          • Size 1KB
          • SHA256 929f0a9e5f79c8d122606f6cb50e606440fc34d992cbacce2252d7e7b92b777e
          • MD5 SHA1 SHA512

          tmp3E6B.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmp3E6B.tmp
          • Size 1KB
          • SHA256 3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c
          • MD5 SHA1 SHA512

          tmp412C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmp412C.tmp
          • Size 1KB
          • SHA256 a18de0ef2102d2546c7afd07ad1d7a071a0e59aff0868cf3937a145f24feb713
          • MD5 SHA1 SHA512

          memory/956-59-0x0000000005740000-0x000000000574A000-memory.dmp

          memory/956-61-0x0000000006840000-0x000000000685E000-memory.dmp

          memory/956-47-0x0000000000400000-0x000000000043A000-memory.dmp

          memory/956-60-0x0000000005980000-0x000000000598C000-memory.dmp

          memory/956-62-0x0000000006980000-0x000000000698A000-memory.dmp

          memory/1108-87-0x00000000075D0000-0x00000000075EA000-memory.dmp

          memory/1108-36-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1108-64-0x0000000071860000-0x00000000718AC000-memory.dmp

          memory/1108-63-0x0000000006880000-0x00000000068B2000-memory.dmp

          memory/1108-75-0x00000000072A0000-0x0000000007343000-memory.dmp

          memory/1108-51-0x0000000006350000-0x000000000639C000-memory.dmp

          memory/1108-21-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1108-86-0x0000000007C20000-0x000000000829A000-memory.dmp

          memory/1108-50-0x0000000006290000-0x00000000062AE000-memory.dmp

          memory/1108-74-0x00000000068C0000-0x00000000068DE000-memory.dmp

          memory/1108-26-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1108-101-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1716-18-0x00000000050A0000-0x00000000056C8000-memory.dmp

          memory/1716-94-0x0000000007530000-0x0000000007538000-memory.dmp

          memory/1716-23-0x0000000005770000-0x0000000005792000-memory.dmp

          memory/1716-25-0x0000000005880000-0x00000000058E6000-memory.dmp

          memory/1716-97-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1716-24-0x0000000005810000-0x0000000005876000-memory.dmp

          memory/1716-20-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1716-19-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/1716-37-0x00000000058F0000-0x0000000005C44000-memory.dmp

          memory/1716-88-0x0000000007280000-0x000000000728A000-memory.dmp

          memory/1716-16-0x0000000004930000-0x0000000004966000-memory.dmp

          memory/1716-93-0x0000000007550000-0x000000000756A000-memory.dmp

          memory/1716-92-0x0000000007450000-0x0000000007464000-memory.dmp

          memory/1716-91-0x0000000007440000-0x000000000744E000-memory.dmp

          memory/1716-90-0x0000000007410000-0x0000000007421000-memory.dmp

          memory/1716-89-0x0000000007490000-0x0000000007526000-memory.dmp

          memory/1716-76-0x0000000071860000-0x00000000718AC000-memory.dmp

          memory/2752-0-0x000000007507E000-0x000000007507F000-memory.dmp

          memory/2752-5-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/2752-4-0x0000000005050000-0x000000000505A000-memory.dmp

          memory/2752-6-0x0000000005320000-0x000000000533E000-memory.dmp

          memory/2752-7-0x0000000005370000-0x0000000005380000-memory.dmp

          memory/2752-8-0x00000000053A0000-0x00000000053B6000-memory.dmp

          memory/2752-9-0x00000000065C0000-0x000000000663C000-memory.dmp

          memory/2752-10-0x0000000008C60000-0x0000000008CFC000-memory.dmp

          memory/2752-15-0x000000007507E000-0x000000007507F000-memory.dmp

          memory/2752-17-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/2752-49-0x0000000075070000-0x0000000075820000-memory.dmp

          memory/2752-3-0x0000000005080000-0x0000000005112000-memory.dmp

          memory/2752-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

          memory/2752-1-0x0000000000550000-0x0000000000642000-memory.dmp