Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 08:32

General

  • Target

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe

  • Size

    945KB

  • MD5

    a1f6c95a377a8c4c194a018614a6b463

  • SHA1

    cd8ce511a2ac57aec39892c0b27832a18e77fc39

  • SHA256

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c

  • SHA512

    fb93341612485022964338a421fbf6a77876d1efc492307e18a4fa28354643f8675cf685847ee8ffc9315232449f1c6b8aab674bb2beb0dc5e14ca6e020510a5

  • SSDEEP

    12288:gI0MYBl4BwkivLUyyqexCwG879IO0MgsaQ/nsy9LHr24HwmU3V50:50MYfMweyTivP7yO7aQ/nsWRQJV5

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.

  • 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 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
    "C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1736
    • 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:2620
    • 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:2576
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp706F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2548
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:2488
      • 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:2664
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NAS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp72EF.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3000
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NAS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp737C.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2828

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp706F.tmp

      Filesize

      1KB

      MD5

      1e5308ea8227ef915028e2a7c6c8ab4d

      SHA1

      c982ed02e9d692ce14c989ab8459a901b9b2e13d

      SHA256

      203e8c1e354a2e9786583e5898217aa21ba6d281659bed3d819ea3b5df14d042

      SHA512

      60cdd2531680758904f1f36c8a48d62b42948c228266bd30fb973d45c8581165baafecbf4059f03d5476ab90a1d7d52e3d8072d1b5858e62f6f849ec871f7569

    • C:\Users\Admin\AppData\Local\Temp\tmp72EF.tmp

      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmp737C.tmp

      Filesize

      1KB

      MD5

      9f554f602c22cfc20079e966d177fadb

      SHA1

      789baa3425849bf239e47c6bcf352e6693a8c337

      SHA256

      4c760d5fe0c06cf4bf554170870f41181c61a217c37eb826903094dda86dd1f1

      SHA512

      b83e3e97dbe38ec4c64d9bef65e2521416f2d7434d78d05e66f729a2e0fbfea3f9bc6f6c4abaf76555af89a9565dfc0853d99067be9042dd66ed6246696eecbb

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

      Filesize

      7KB

      MD5

      6182cee8ab29f1657472ef6526950edd

      SHA1

      724d0f2826905469721d52bbed4053ba042fc3fa

      SHA256

      560b74d804942dc66ba28e68050752a4c3d1a63530d14a784a172fd88e005b40

      SHA512

      af911ee6c70af608fe91fab39b54cb2b2c4ed2a9151ad6185bd4135123e3bfe0a0cd70d70d2f96cf56f28e31cfe0d1b04780372103465a231d72abfb0a97cf98

    • memory/1736-32-0x00000000743D0000-0x0000000074ABE000-memory.dmp

      Filesize

      6.9MB

    • memory/1736-0-0x00000000743DE000-0x00000000743DF000-memory.dmp

      Filesize

      4KB

    • memory/1736-6-0x00000000050F0000-0x000000000516C000-memory.dmp

      Filesize

      496KB

    • memory/1736-4-0x00000000004D0000-0x00000000004E0000-memory.dmp

      Filesize

      64KB

    • memory/1736-3-0x0000000000490000-0x00000000004AE000-memory.dmp

      Filesize

      120KB

    • memory/1736-14-0x00000000743DE000-0x00000000743DF000-memory.dmp

      Filesize

      4KB

    • memory/1736-5-0x00000000004E0000-0x00000000004F6000-memory.dmp

      Filesize

      88KB

    • memory/1736-1-0x0000000001270000-0x0000000001362000-memory.dmp

      Filesize

      968KB

    • memory/1736-2-0x00000000743D0000-0x0000000074ABE000-memory.dmp

      Filesize

      6.9MB

    • memory/2664-20-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2664-26-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-24-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-22-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-29-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-31-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-30-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2664-40-0x00000000003D0000-0x00000000003DA000-memory.dmp

      Filesize

      40KB

    • memory/2664-41-0x00000000003E0000-0x00000000003EC000-memory.dmp

      Filesize

      48KB

    • memory/2664-42-0x0000000000440000-0x000000000045E000-memory.dmp

      Filesize

      120KB

    • memory/2664-43-0x0000000000460000-0x000000000046A000-memory.dmp

      Filesize

      40KB