Analysis

  • max time kernel
    135s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 08:26

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 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 46 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:2268
    • 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:2572
    • 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:2804
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6883.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2580
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:2732
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        2⤵
          PID:2436
        • 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:2444
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6AC4.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:1528
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6B42.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:1200

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp6883.tmp

        Filesize

        1KB

        MD5

        39342423d1db4a7b342db335a3a4d8cb

        SHA1

        6e801a19fbd3841f2ee128ec5ea58ef0215fde7c

        SHA256

        7cd50a22781c280647310895644046e1002fed993869625be028cdcf09fa482e

        SHA512

        cc91b2570e293e80f349903cf7581d4761cd96865eae770e5ab8d1b0f7113bab842866b14c5724cfe3b528bb57e5ce474d5ae34b7222b00b3a5e644a4204c62d

      • C:\Users\Admin\AppData\Local\Temp\tmp6AC4.tmp

        Filesize

        1KB

        MD5

        8cad1b41587ced0f1e74396794f31d58

        SHA1

        11054bf74fcf5e8e412768035e4dae43aa7b710f

        SHA256

        3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

        SHA512

        99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

      • C:\Users\Admin\AppData\Local\Temp\tmp6B42.tmp

        Filesize

        1KB

        MD5

        4b7ef560289c0f62d0baf6f14f48a57a

        SHA1

        8331acb90dde588aa3196919f6e847f398fd06d1

        SHA256

        062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207

        SHA512

        ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6Y85KOK7DN10SEJOKWJ1.temp

        Filesize

        7KB

        MD5

        5b477af1ad5116329ed9d2fbe3beb7dc

        SHA1

        7e27054ed2f59c4dcd8d67770351aae319daae21

        SHA256

        ce709d5f8f34692eebb6c4605620e13a11bcefa979b850e1aaf054cbb4a75c42

        SHA512

        37462a79a187dab20997fc2cd7839dcdfad9d8c6bf869aa0b950eb6621d57099a72bab6e8ac1c47caf06fff6bde99258d145995c47b2e12eac0fa697a738cce3

      • memory/2268-6-0x0000000005440000-0x00000000054BC000-memory.dmp

        Filesize

        496KB

      • memory/2268-31-0x0000000074360000-0x0000000074A4E000-memory.dmp

        Filesize

        6.9MB

      • memory/2268-0-0x000000007436E000-0x000000007436F000-memory.dmp

        Filesize

        4KB

      • memory/2268-4-0x0000000000550000-0x0000000000560000-memory.dmp

        Filesize

        64KB

      • memory/2268-3-0x0000000000450000-0x000000000046E000-memory.dmp

        Filesize

        120KB

      • memory/2268-5-0x0000000000560000-0x0000000000576000-memory.dmp

        Filesize

        88KB

      • memory/2268-1-0x0000000001100000-0x00000000011F2000-memory.dmp

        Filesize

        968KB

      • memory/2268-2-0x0000000074360000-0x0000000074A4E000-memory.dmp

        Filesize

        6.9MB

      • memory/2444-19-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-23-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-21-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-28-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-25-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-29-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-30-0x0000000000400000-0x000000000043A000-memory.dmp

        Filesize

        232KB

      • memory/2444-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2444-39-0x0000000000460000-0x000000000046A000-memory.dmp

        Filesize

        40KB

      • memory/2444-41-0x0000000000600000-0x000000000061E000-memory.dmp

        Filesize

        120KB

      • memory/2444-40-0x0000000000470000-0x000000000047C000-memory.dmp

        Filesize

        48KB

      • memory/2444-42-0x0000000000630000-0x000000000063A000-memory.dmp

        Filesize

        40KB