Analysis

  • max time kernel
    156s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:30

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 28 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:380
    • 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:568
    • 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:4912
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7064.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:812
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:4648
      • 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:2860
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9ED6.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:4772
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9FB2.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3860
    • 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 --mojo-platform-channel-handle=1028 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3992

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Command and Scripting Interpreter

      1
      T1059

      PowerShell

      1
      T1059.001

      Scheduled Task/Job

      1
      T1053

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Scheduled Task/Job

      1
      T1053

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Scheduled Task/Job

      1
      T1053

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
        Filesize

        52KB

        MD5

        a956df36b5a0659b33d9c0961edaa7dd

        SHA1

        12967aed42494a0aca2a203806384397dbb3c919

        SHA256

        4bca11d6abf527550624c3e67aa712598c3bf9ceab9b61e2cabb55cae2bc4f37

        SHA512

        41212bb9c5bd210b6546f2bd2854acf3d6625c2b1aafd1a98e5ed054bc516d01bc6f55fbb491a116e23e899ed09885417bfe03dc7688d9d408d61ad4c8c8d2be

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xzsmtbui.0pm.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmp7064.tmp
        Filesize

        1KB

        MD5

        0b7bab11a2af0180e35fd228be4d67e8

        SHA1

        2e0aa315f165afe0d09a7d50dcafa93bc5bbad2d

        SHA256

        f915fec06afb59de8434e8e87f1a4603a56e2a30dca7e1c00db439114f80ff28

        SHA512

        a2c8808dab79c4a5bf8d76c16eb8914080989498ba1229a18826aed6be9e480d1eba24f9625d279219bd43f70292399c66647e47bf788011ac0125fcd6f99f77

      • C:\Users\Admin\AppData\Local\Temp\tmp9ED6.tmp
        Filesize

        1KB

        MD5

        8cad1b41587ced0f1e74396794f31d58

        SHA1

        11054bf74fcf5e8e412768035e4dae43aa7b710f

        SHA256

        3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

        SHA512

        99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

      • C:\Users\Admin\AppData\Local\Temp\tmp9FB2.tmp
        Filesize

        1KB

        MD5

        0339b45ef206f4becc88be0d65e24b9e

        SHA1

        6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

        SHA256

        3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

        SHA512

        c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

      • memory/380-8-0x0000000005150000-0x0000000005160000-memory.dmp
        Filesize

        64KB

      • memory/380-12-0x0000000008E60000-0x0000000008EFC000-memory.dmp
        Filesize

        624KB

      • memory/380-7-0x0000000005100000-0x000000000511E000-memory.dmp
        Filesize

        120KB

      • memory/380-5-0x0000000004EA0000-0x0000000004EAA000-memory.dmp
        Filesize

        40KB

      • memory/380-9-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/380-10-0x0000000005510000-0x0000000005526000-memory.dmp
        Filesize

        88KB

      • memory/380-11-0x0000000000F40000-0x0000000000FBC000-memory.dmp
        Filesize

        496KB

      • memory/380-6-0x0000000074BFE000-0x0000000074BFF000-memory.dmp
        Filesize

        4KB

      • memory/380-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp
        Filesize

        4KB

      • memory/380-4-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/380-3-0x0000000004F70000-0x0000000005002000-memory.dmp
        Filesize

        584KB

      • memory/380-2-0x0000000005520000-0x0000000005AC4000-memory.dmp
        Filesize

        5.6MB

      • memory/380-1-0x00000000003B0000-0x00000000004A2000-memory.dmp
        Filesize

        968KB

      • memory/380-31-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-13-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-63-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-98-0x0000000007BF0000-0x0000000007BFA000-memory.dmp
        Filesize

        40KB

      • memory/568-16-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-71-0x00000000707B0000-0x00000000707FC000-memory.dmp
        Filesize

        304KB

      • memory/568-66-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-30-0x0000000005930000-0x0000000005996000-memory.dmp
        Filesize

        408KB

      • memory/568-65-0x00000000068B0000-0x00000000068FC000-memory.dmp
        Filesize

        304KB

      • memory/568-20-0x0000000005A10000-0x0000000006038000-memory.dmp
        Filesize

        6.2MB

      • memory/568-52-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-64-0x00000000067E0000-0x00000000067FE000-memory.dmp
        Filesize

        120KB

      • memory/568-18-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/568-17-0x0000000002EA0000-0x0000000002ED6000-memory.dmp
        Filesize

        216KB

      • memory/2860-59-0x0000000004FF0000-0x0000000004FFA000-memory.dmp
        Filesize

        40KB

      • memory/2860-61-0x0000000005140000-0x000000000515E000-memory.dmp
        Filesize

        120KB

      • memory/2860-60-0x0000000005000000-0x000000000500C000-memory.dmp
        Filesize

        48KB

      • memory/2860-62-0x0000000005160000-0x000000000516A000-memory.dmp
        Filesize

        40KB

      • memory/2860-26-0x0000000000400000-0x000000000043A000-memory.dmp
        Filesize

        232KB

      • memory/4912-69-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/4912-28-0x0000000004FD0000-0x0000000004FF2000-memory.dmp
        Filesize

        136KB

      • memory/4912-29-0x0000000005070000-0x00000000050D6000-memory.dmp
        Filesize

        408KB

      • memory/4912-67-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/4912-68-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/4912-53-0x0000000005B40000-0x0000000005E94000-memory.dmp
        Filesize

        3.3MB

      • memory/4912-72-0x00000000707B0000-0x00000000707FC000-memory.dmp
        Filesize

        304KB

      • memory/4912-21-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/4912-70-0x0000000006690000-0x00000000066C2000-memory.dmp
        Filesize

        200KB

      • memory/4912-91-0x0000000006660000-0x000000000667E000-memory.dmp
        Filesize

        120KB

      • memory/4912-92-0x00000000072A0000-0x0000000007343000-memory.dmp
        Filesize

        652KB

      • memory/4912-24-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB

      • memory/4912-96-0x0000000007A00000-0x000000000807A000-memory.dmp
        Filesize

        6.5MB

      • memory/4912-97-0x0000000006600000-0x000000000661A000-memory.dmp
        Filesize

        104KB

      • memory/4912-99-0x0000000007420000-0x000000000742A000-memory.dmp
        Filesize

        40KB

      • memory/4912-23-0x0000000074BF0000-0x00000000753A0000-memory.dmp
        Filesize

        7.7MB