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 08:25

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

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • 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:856
    • 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:4968
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAC7C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4896
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:1016
      • 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:3160
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB287.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2212
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB315.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3180

    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\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

      1f3ba9af4510d7e1f60448d19a0dbfd3

      SHA1

      a9ac2ee9c623bf5c091713574ec236a78a1da5df

      SHA256

      5b6928d7f4563cf88e40fcaacb6c532137d2bdfa892928471335462595a0d788

      SHA512

      f71d2527d2e8b325f1004db3138dc27a5110124b24f1a8d37a3383325207c43a15aac3eb47a5c3367fb4e84a9c218c157cc74e1c29850f021020f0d9765aadaf

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_21kxpm51.l40.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpAC7C.tmp
      Filesize

      1KB

      MD5

      f7c5ed2cd473833b154217a52a430c51

      SHA1

      589d8d69330ed81aa7eab30717f4c384b80774c6

      SHA256

      f52d3cb7276344ea53186879470ef28cd1bd72838d711ec9630fe8c45a887cab

      SHA512

      9cd86b088fe15999de8a6027b379cd5a4c75267ee867fbaa01b52ae1a0a1bef099932bf7998a329c3721adc264f804b66581c23b1f42e65b2abcb9cb7478fd9a

    • C:\Users\Admin\AppData\Local\Temp\tmpB287.tmp
      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmpB315.tmp
      Filesize

      1KB

      MD5

      5fea24e883e06e4df6d240dc72abf2c5

      SHA1

      d778bf0f436141e02df4b421e8188abdcc9a84a4

      SHA256

      e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

      SHA512

      15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

    • memory/856-5-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/856-38-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/856-8-0x0000000005010000-0x0000000005026000-memory.dmp
      Filesize

      88KB

    • memory/856-9-0x0000000006120000-0x000000000619C000-memory.dmp
      Filesize

      496KB

    • memory/856-10-0x00000000088A0000-0x000000000893C000-memory.dmp
      Filesize

      624KB

    • memory/856-15-0x000000007480E000-0x000000007480F000-memory.dmp
      Filesize

      4KB

    • memory/856-6-0x0000000004E80000-0x0000000004E9E000-memory.dmp
      Filesize

      120KB

    • memory/856-7-0x0000000004ED0000-0x0000000004EE0000-memory.dmp
      Filesize

      64KB

    • memory/856-18-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/856-4-0x0000000004D40000-0x0000000004D4A000-memory.dmp
      Filesize

      40KB

    • memory/856-3-0x0000000004BB0000-0x0000000004C42000-memory.dmp
      Filesize

      584KB

    • memory/856-2-0x00000000050C0000-0x0000000005664000-memory.dmp
      Filesize

      5.6MB

    • memory/856-1-0x00000000000B0000-0x00000000001A2000-memory.dmp
      Filesize

      968KB

    • memory/856-0-0x000000007480E000-0x000000007480F000-memory.dmp
      Filesize

      4KB

    • memory/2420-40-0x0000000006100000-0x0000000006454000-memory.dmp
      Filesize

      3.3MB

    • memory/2420-21-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2420-32-0x0000000005F90000-0x0000000005FF6000-memory.dmp
      Filesize

      408KB

    • memory/2420-31-0x0000000005EB0000-0x0000000005F16000-memory.dmp
      Filesize

      408KB

    • memory/2420-17-0x0000000005630000-0x0000000005C58000-memory.dmp
      Filesize

      6.2MB

    • memory/2420-102-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2420-39-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2420-22-0x0000000005E10000-0x0000000005E32000-memory.dmp
      Filesize

      136KB

    • memory/2420-16-0x0000000004FC0000-0x0000000004FF6000-memory.dmp
      Filesize

      216KB

    • memory/2420-82-0x0000000075060000-0x00000000750AC000-memory.dmp
      Filesize

      304KB

    • memory/2420-57-0x0000000006580000-0x000000000659E000-memory.dmp
      Filesize

      120KB

    • memory/2420-58-0x0000000006B70000-0x0000000006BBC000-memory.dmp
      Filesize

      304KB

    • memory/2420-19-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/3160-63-0x00000000069C0000-0x00000000069CA000-memory.dmp
      Filesize

      40KB

    • memory/3160-62-0x0000000005990000-0x00000000059AE000-memory.dmp
      Filesize

      120KB

    • memory/3160-61-0x0000000005830000-0x000000000583C000-memory.dmp
      Filesize

      48KB

    • memory/3160-60-0x0000000005820000-0x000000000582A000-memory.dmp
      Filesize

      40KB

    • memory/3160-23-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/4968-75-0x00000000067E0000-0x00000000067FE000-memory.dmp
      Filesize

      120KB

    • memory/4968-65-0x0000000075060000-0x00000000750AC000-memory.dmp
      Filesize

      304KB

    • memory/4968-64-0x00000000071B0000-0x00000000071E2000-memory.dmp
      Filesize

      200KB

    • memory/4968-78-0x0000000007530000-0x000000000754A000-memory.dmp
      Filesize

      104KB

    • memory/4968-77-0x0000000007B80000-0x00000000081FA000-memory.dmp
      Filesize

      6.5MB

    • memory/4968-79-0x00000000075A0000-0x00000000075AA000-memory.dmp
      Filesize

      40KB

    • memory/4968-80-0x00000000077B0000-0x0000000007846000-memory.dmp
      Filesize

      600KB

    • memory/4968-81-0x0000000007730000-0x0000000007741000-memory.dmp
      Filesize

      68KB

    • memory/4968-76-0x0000000007200000-0x00000000072A3000-memory.dmp
      Filesize

      652KB

    • memory/4968-92-0x0000000007760000-0x000000000776E000-memory.dmp
      Filesize

      56KB

    • memory/4968-93-0x0000000007770000-0x0000000007784000-memory.dmp
      Filesize

      80KB

    • memory/4968-94-0x0000000007870000-0x000000000788A000-memory.dmp
      Filesize

      104KB

    • memory/4968-95-0x0000000007850000-0x0000000007858000-memory.dmp
      Filesize

      32KB

    • memory/4968-98-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4968-33-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4968-50-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4968-24-0x0000000074800000-0x0000000074FB0000-memory.dmp
      Filesize

      7.7MB