Analysis

  • max time kernel
    148s
  • max time network
    152s
  • 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 08:26

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.

  • 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 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 26 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:4532
    • 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:2420
    • 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:4992
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B36.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3180
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:2676
      • 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:1504
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA112.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2156
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA47E.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      79d5b2b31bd846c5338582cc49e1fc79

      SHA1

      a57fca7e8da873188586fd94152279bc597e69bd

      SHA256

      a7e6b403529b7a42a21d78b5a6c993ae8404bf4ab5fd8865096eb8a722afa34e

      SHA512

      6106774b8a4808e1a16c6da00df04b6165dbd84304ed1c05599c1d9b1c7481a837ea216a773a1a782c21b55e5040c4a573029b965ca1ecf14c203636d1be4b5b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ra144ca2.bjf.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp9B36.tmp

      Filesize

      1KB

      MD5

      f7c5ed2cd473833b154217a52a430c51

      SHA1

      589d8d69330ed81aa7eab30717f4c384b80774c6

      SHA256

      f52d3cb7276344ea53186879470ef28cd1bd72838d711ec9630fe8c45a887cab

      SHA512

      9cd86b088fe15999de8a6027b379cd5a4c75267ee867fbaa01b52ae1a0a1bef099932bf7998a329c3721adc264f804b66581c23b1f42e65b2abcb9cb7478fd9a

    • C:\Users\Admin\AppData\Local\Temp\tmpA112.tmp

      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmpA47E.tmp

      Filesize

      1KB

      MD5

      5fea24e883e06e4df6d240dc72abf2c5

      SHA1

      d778bf0f436141e02df4b421e8188abdcc9a84a4

      SHA256

      e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

      SHA512

      15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

    • memory/1504-48-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1504-61-0x0000000005500000-0x000000000550C000-memory.dmp

      Filesize

      48KB

    • memory/1504-63-0x0000000006650000-0x000000000665A000-memory.dmp

      Filesize

      40KB

    • memory/1504-62-0x0000000006510000-0x000000000652E000-memory.dmp

      Filesize

      120KB

    • memory/1504-60-0x00000000054F0000-0x00000000054FA000-memory.dmp

      Filesize

      40KB

    • memory/2420-16-0x0000000002BA0000-0x0000000002BD6000-memory.dmp

      Filesize

      216KB

    • memory/2420-23-0x0000000005580000-0x00000000055E6000-memory.dmp

      Filesize

      408KB

    • memory/2420-93-0x0000000007A10000-0x0000000007A24000-memory.dmp

      Filesize

      80KB

    • memory/2420-19-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/2420-18-0x00000000057A0000-0x0000000005DC8000-memory.dmp

      Filesize

      6.2MB

    • memory/2420-76-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

      Filesize

      304KB

    • memory/2420-24-0x0000000005720000-0x0000000005786000-memory.dmp

      Filesize

      408KB

    • memory/2420-92-0x0000000007A00000-0x0000000007A0E000-memory.dmp

      Filesize

      56KB

    • memory/2420-21-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/2420-20-0x00000000054E0000-0x0000000005502000-memory.dmp

      Filesize

      136KB

    • memory/2420-25-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/2420-102-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/2420-91-0x00000000079D0000-0x00000000079E1000-memory.dmp

      Filesize

      68KB

    • memory/2420-90-0x0000000007A50000-0x0000000007AE6000-memory.dmp

      Filesize

      600KB

    • memory/2420-89-0x0000000007840000-0x000000000784A000-memory.dmp

      Filesize

      40KB

    • memory/4532-10-0x00000000089C0000-0x0000000008A5C000-memory.dmp

      Filesize

      624KB

    • memory/4532-0-0x000000007449E000-0x000000007449F000-memory.dmp

      Filesize

      4KB

    • memory/4532-17-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-15-0x000000007449E000-0x000000007449F000-memory.dmp

      Filesize

      4KB

    • memory/4532-52-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-9-0x0000000006240000-0x00000000062BC000-memory.dmp

      Filesize

      496KB

    • memory/4532-8-0x00000000058D0000-0x00000000058E6000-memory.dmp

      Filesize

      88KB

    • memory/4532-7-0x00000000051F0000-0x0000000005200000-memory.dmp

      Filesize

      64KB

    • memory/4532-6-0x00000000051A0000-0x00000000051BE000-memory.dmp

      Filesize

      120KB

    • memory/4532-5-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-4-0x0000000004CD0000-0x0000000004CDA000-memory.dmp

      Filesize

      40KB

    • memory/4532-3-0x0000000004CF0000-0x0000000004D82000-memory.dmp

      Filesize

      584KB

    • memory/4532-2-0x0000000005200000-0x00000000057A4000-memory.dmp

      Filesize

      5.6MB

    • memory/4532-1-0x00000000001D0000-0x00000000002C2000-memory.dmp

      Filesize

      968KB

    • memory/4992-47-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4992-77-0x00000000075F0000-0x0000000007693000-memory.dmp

      Filesize

      652KB

    • memory/4992-87-0x0000000007D60000-0x00000000083DA000-memory.dmp

      Filesize

      6.5MB

    • memory/4992-88-0x0000000007710000-0x000000000772A000-memory.dmp

      Filesize

      104KB

    • memory/4992-75-0x0000000006A00000-0x0000000006A1E000-memory.dmp

      Filesize

      120KB

    • memory/4992-64-0x00000000069C0000-0x00000000069F2000-memory.dmp

      Filesize

      200KB

    • memory/4992-65-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

      Filesize

      304KB

    • memory/4992-51-0x00000000067B0000-0x00000000067FC000-memory.dmp

      Filesize

      304KB

    • memory/4992-50-0x00000000063F0000-0x000000000640E000-memory.dmp

      Filesize

      120KB

    • memory/4992-94-0x0000000007A50000-0x0000000007A6A000-memory.dmp

      Filesize

      104KB

    • memory/4992-95-0x0000000007A30000-0x0000000007A38000-memory.dmp

      Filesize

      32KB

    • memory/4992-45-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4992-46-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4992-101-0x0000000074490000-0x0000000074C40000-memory.dmp

      Filesize

      7.7MB

    • memory/4992-26-0x0000000005DA0000-0x00000000060F4000-memory.dmp

      Filesize

      3.3MB