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Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 08:28

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 20 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:3972
    • 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:2624
    • 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:4160
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp83B7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2608
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:1928
      • 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:4652
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8889.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:428
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8A7E.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3540

    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

      82d8cb7615a0c1307d0cd54ef298297f

      SHA1

      bd7297b68114e27c4989e8a2a6cd5df19200e4ea

      SHA256

      35a122b057652eb66deff09690d45d56923ea537e2fd719beb6e29b29758d0eb

      SHA512

      68ae7c70c5f7503063b9ea26f4584592cfed7ba29fc3dd739bdb958613c71476f29bce300f6ada86cc7fb3da97a76c07f6b61fce2f34587a861ab76aab8e8e65

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_igbvsjx2.4i3.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp83B7.tmp

      Filesize

      1KB

      MD5

      e9f55dbd01b0c742e3f0721ce22cd3a7

      SHA1

      de02d631649603d713452bdfbf5776eaea64fb7a

      SHA256

      acbd9668ab236c807a479b588393393c9befa6a09bda1f9c853273ab74b9ec2f

      SHA512

      40c1e55a2f5fc8d902a297b67d757b1e42609a802432b4c945094ebf309fc61649b9fba1998aa4c957ce447f5419d25ba0d5d6640da68df488e52bf73bb34779

    • C:\Users\Admin\AppData\Local\Temp\tmp8889.tmp

      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmp8A7E.tmp

      Filesize

      1KB

      MD5

      a246b3561d823177f3586e629f144233

      SHA1

      0f05d12e55a1d2e5e6a4f307c193882fba093315

      SHA256

      6abae7707b06e52b58f537b335e367cc54b093e899d78f16e94ceaf7ceafca52

      SHA512

      4246aa9a96331e2c7e36b37fa778e31ecae055c77164e0dc673aa50cdec368f08d356ab06ef1a4540816c474828048ab1bebed7e211a4eb929f2918e1fac9c6d

    • memory/2624-93-0x0000000007E00000-0x0000000007E14000-memory.dmp

      Filesize

      80KB

    • memory/2624-19-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-91-0x0000000007DC0000-0x0000000007DD1000-memory.dmp

      Filesize

      68KB

    • memory/2624-88-0x0000000007BC0000-0x0000000007BDA000-memory.dmp

      Filesize

      104KB

    • memory/2624-77-0x0000000075730000-0x000000007577C000-memory.dmp

      Filesize

      304KB

    • memory/2624-15-0x0000000002F90000-0x0000000002FC6000-memory.dmp

      Filesize

      216KB

    • memory/2624-94-0x0000000007F00000-0x0000000007F1A000-memory.dmp

      Filesize

      104KB

    • memory/2624-17-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-18-0x0000000005C30000-0x0000000006258000-memory.dmp

      Filesize

      6.2MB

    • memory/2624-92-0x0000000007DF0000-0x0000000007DFE000-memory.dmp

      Filesize

      56KB

    • memory/2624-20-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-95-0x0000000007EE0000-0x0000000007EE8000-memory.dmp

      Filesize

      32KB

    • memory/2624-23-0x0000000005970000-0x00000000059D6000-memory.dmp

      Filesize

      408KB

    • memory/2624-24-0x0000000005A50000-0x0000000005AB6000-memory.dmp

      Filesize

      408KB

    • memory/2624-101-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-54-0x00000000068A0000-0x00000000068EC000-memory.dmp

      Filesize

      304KB

    • memory/2624-51-0x0000000006880000-0x000000000689E000-memory.dmp

      Filesize

      120KB

    • memory/2624-22-0x00000000057D0000-0x00000000057F2000-memory.dmp

      Filesize

      136KB

    • memory/3972-38-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/3972-8-0x0000000004FC0000-0x0000000004FD6000-memory.dmp

      Filesize

      88KB

    • memory/3972-1-0x0000000000170000-0x0000000000262000-memory.dmp

      Filesize

      968KB

    • memory/3972-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

      Filesize

      4KB

    • memory/3972-50-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/3972-2-0x0000000005100000-0x00000000056A4000-memory.dmp

      Filesize

      5.6MB

    • memory/3972-3-0x0000000004C50000-0x0000000004CE2000-memory.dmp

      Filesize

      584KB

    • memory/3972-4-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/3972-16-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

      Filesize

      4KB

    • memory/3972-5-0x0000000004D10000-0x0000000004D1A000-memory.dmp

      Filesize

      40KB

    • memory/3972-6-0x0000000004F40000-0x0000000004F5E000-memory.dmp

      Filesize

      120KB

    • memory/3972-7-0x0000000004F90000-0x0000000004FA0000-memory.dmp

      Filesize

      64KB

    • memory/3972-9-0x00000000062C0000-0x000000000633C000-memory.dmp

      Filesize

      496KB

    • memory/3972-10-0x0000000008860000-0x00000000088FC000-memory.dmp

      Filesize

      624KB

    • memory/4160-25-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/4160-36-0x0000000005660000-0x00000000059B4000-memory.dmp

      Filesize

      3.3MB

    • memory/4160-76-0x0000000006E90000-0x0000000006F33000-memory.dmp

      Filesize

      652KB

    • memory/4160-64-0x0000000006C50000-0x0000000006C82000-memory.dmp

      Filesize

      200KB

    • memory/4160-45-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/4160-87-0x00000000075F0000-0x0000000007C6A000-memory.dmp

      Filesize

      6.5MB

    • memory/4160-89-0x0000000007020000-0x000000000702A000-memory.dmp

      Filesize

      40KB

    • memory/4160-90-0x0000000007230000-0x00000000072C6000-memory.dmp

      Filesize

      600KB

    • memory/4160-65-0x0000000075730000-0x000000007577C000-memory.dmp

      Filesize

      304KB

    • memory/4160-102-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/4160-35-0x0000000074ED0000-0x0000000075680000-memory.dmp

      Filesize

      7.7MB

    • memory/4160-75-0x0000000006240000-0x000000000625E000-memory.dmp

      Filesize

      120KB

    • memory/4652-60-0x0000000004980000-0x000000000498A000-memory.dmp

      Filesize

      40KB

    • memory/4652-63-0x0000000004E70000-0x0000000004E7A000-memory.dmp

      Filesize

      40KB

    • memory/4652-37-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/4652-62-0x0000000004B90000-0x0000000004BAE000-memory.dmp

      Filesize

      120KB

    • memory/4652-61-0x0000000004AD0000-0x0000000004ADC000-memory.dmp

      Filesize

      48KB