Analysis

  • max time kernel
    147s
  • max time network
    153s
  • 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 08:25

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 22 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 32 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:3364
    • 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:2748
    • 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:4260
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7F71.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4044
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:2104
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        2⤵
          PID:4388
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          2⤵
            PID:1004
          • 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:2028
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp82DC.tmp"
              3⤵
              • Creates scheduled task(s)
              PID:2184
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8473.tmp"
              3⤵
              • Creates scheduled task(s)
              PID:3408

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          2KB

          MD5

          3d086a433708053f9bf9523e1d87a4e8

          SHA1

          b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

          SHA256

          6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

          SHA512

          931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

          Filesize

          18KB

          MD5

          0a4d58bb17eed881adae9caa5773729a

          SHA1

          b48e8d3fae25c5e38fc8f35ffd188d919bc0863c

          SHA256

          4c8b5469836e754b4f432c94ddc9ec3c2719841815cbf6c55d02165e86774616

          SHA512

          07587829f2e6925baf7d8cfea5e137f25e93b53fbfe88416b3d94d956a56cefbd8cd9695fdc001b5fd75a310d78d1a7992e7d41df01309d0128c558bcefcbd7e

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4lxl4nuh.niv.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp7F71.tmp

          Filesize

          1KB

          MD5

          af4404b2f40347b8dc341fc4a8f2cfcf

          SHA1

          5d157fb481c54c9c9aa0c397c96d892943738976

          SHA256

          c6b214362ad6eea7d8e857a9f794eab01930feeb3707b168ca29d1efbc70b412

          SHA512

          31ee8bc3ef818b3495f87bb6cfece9ea97e3f41d059426a9f85489c0a780bb26cab93920aba1962c6b84be5fe3eb3c2999af1a3e0e10e1c8804486dab410a983

        • C:\Users\Admin\AppData\Local\Temp\tmp82DC.tmp

          Filesize

          1KB

          MD5

          8cad1b41587ced0f1e74396794f31d58

          SHA1

          11054bf74fcf5e8e412768035e4dae43aa7b710f

          SHA256

          3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

          SHA512

          99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

        • C:\Users\Admin\AppData\Local\Temp\tmp8473.tmp

          Filesize

          1KB

          MD5

          2f26d92c1eeead3896820e56ec46f6f1

          SHA1

          d95533b61eed7d89e4ada56bc566d60e42ac1f61

          SHA256

          99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

          SHA512

          6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

        • memory/2028-61-0x0000000005950000-0x000000000596E000-memory.dmp

          Filesize

          120KB

        • memory/2028-60-0x0000000005780000-0x000000000578C000-memory.dmp

          Filesize

          48KB

        • memory/2028-62-0x0000000005B30000-0x0000000005B3A000-memory.dmp

          Filesize

          40KB

        • memory/2028-59-0x0000000005770000-0x000000000577A000-memory.dmp

          Filesize

          40KB

        • memory/2028-47-0x0000000000400000-0x000000000043A000-memory.dmp

          Filesize

          232KB

        • memory/2748-51-0x0000000006770000-0x00000000067BC000-memory.dmp

          Filesize

          304KB

        • memory/2748-15-0x0000000004C50000-0x0000000004C86000-memory.dmp

          Filesize

          216KB

        • memory/2748-18-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/2748-17-0x0000000005390000-0x00000000059B8000-memory.dmp

          Filesize

          6.2MB

        • memory/2748-19-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/2748-20-0x00000000059C0000-0x00000000059E2000-memory.dmp

          Filesize

          136KB

        • memory/2748-100-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/2748-91-0x0000000007780000-0x000000000778E000-memory.dmp

          Filesize

          56KB

        • memory/2748-33-0x0000000005D30000-0x0000000006084000-memory.dmp

          Filesize

          3.3MB

        • memory/2748-92-0x0000000007790000-0x00000000077A4000-memory.dmp

          Filesize

          80KB

        • memory/2748-90-0x0000000007750000-0x0000000007761000-memory.dmp

          Filesize

          68KB

        • memory/2748-74-0x0000000006850000-0x000000000686E000-memory.dmp

          Filesize

          120KB

        • memory/2748-89-0x00000000077D0000-0x0000000007866000-memory.dmp

          Filesize

          600KB

        • memory/2748-50-0x0000000006230000-0x000000000624E000-memory.dmp

          Filesize

          120KB

        • memory/2748-77-0x0000000007540000-0x000000000755A000-memory.dmp

          Filesize

          104KB

        • memory/2748-88-0x00000000075C0000-0x00000000075CA000-memory.dmp

          Filesize

          40KB

        • memory/2748-76-0x0000000007BF0000-0x000000000826A000-memory.dmp

          Filesize

          6.5MB

        • memory/2748-22-0x0000000005BC0000-0x0000000005C26000-memory.dmp

          Filesize

          408KB

        • memory/2748-21-0x0000000005AA0000-0x0000000005B06000-memory.dmp

          Filesize

          408KB

        • memory/2748-63-0x0000000006810000-0x0000000006842000-memory.dmp

          Filesize

          200KB

        • memory/2748-75-0x0000000007430000-0x00000000074D3000-memory.dmp

          Filesize

          652KB

        • memory/2748-64-0x0000000071300000-0x000000007134C000-memory.dmp

          Filesize

          304KB

        • memory/3364-49-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3364-9-0x0000000006680000-0x00000000066FC000-memory.dmp

          Filesize

          496KB

        • memory/3364-3-0x0000000005140000-0x00000000051D2000-memory.dmp

          Filesize

          584KB

        • memory/3364-5-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3364-6-0x0000000005530000-0x000000000554E000-memory.dmp

          Filesize

          120KB

        • memory/3364-8-0x0000000006370000-0x0000000006386000-memory.dmp

          Filesize

          88KB

        • memory/3364-7-0x0000000005580000-0x0000000005590000-memory.dmp

          Filesize

          64KB

        • memory/3364-16-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

          Filesize

          4KB

        • memory/3364-1-0x00000000007A0000-0x0000000000892000-memory.dmp

          Filesize

          968KB

        • memory/3364-0-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

          Filesize

          4KB

        • memory/3364-45-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3364-4-0x0000000005300000-0x000000000530A000-memory.dmp

          Filesize

          40KB

        • memory/3364-10-0x0000000008D90000-0x0000000008E2C000-memory.dmp

          Filesize

          624KB

        • memory/3364-2-0x00000000057C0000-0x0000000005D64000-memory.dmp

          Filesize

          5.6MB

        • memory/4260-46-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/4260-94-0x0000000007E90000-0x0000000007E98000-memory.dmp

          Filesize

          32KB

        • memory/4260-93-0x0000000007EB0000-0x0000000007ECA000-memory.dmp

          Filesize

          104KB

        • memory/4260-101-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/4260-34-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/4260-40-0x0000000074B10000-0x00000000752C0000-memory.dmp

          Filesize

          7.7MB

        • memory/4260-78-0x0000000071300000-0x000000007134C000-memory.dmp

          Filesize

          304KB