Analysis

  • max time kernel
    149s
  • 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, 08:32

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 23 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:2608
    • 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:3628
    • 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:812
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD47.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3620
    • 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:3948
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB41D.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4116
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB75A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1916

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

          3KB

          MD5

          ba346462c65d1f69b4365cc31a53f89b

          SHA1

          74e2420e200106e1d526cc03a04c70c2c46e8c46

          SHA256

          48d8ec44ca4927f6efd4c9948543d0cd0e738db3f83795bac7609536def88394

          SHA512

          6c06fdc28c9d446458f9e27403e9d129507ac0399c6a91d46978ea13485caf0b39a1febff0ccbe4e6a51fe48ec35dad7bf42130a0aef85aeeec2d79ee21177fb

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2gh4jlwh.ovw.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpAD47.tmp

          Filesize

          1KB

          MD5

          5dbe93b61dc060e43b70e8bd65adb74c

          SHA1

          5181a4c24ac847cbf049be5c35cf7c35e4847e40

          SHA256

          8c8fae4d9e314131ab5bb0c40b93e829af09f778088d0710a24b110d606ada64

          SHA512

          35905cba8ce6bd1e31c0b3f39a73c6a7b48274682bd0bfec7c079d25078e1b672fbdf79c9d0d54f383edbcaeda87028e55e3cccab53227843db20c50bc8c71b2

        • C:\Users\Admin\AppData\Local\Temp\tmpB41D.tmp

          Filesize

          1KB

          MD5

          8cad1b41587ced0f1e74396794f31d58

          SHA1

          11054bf74fcf5e8e412768035e4dae43aa7b710f

          SHA256

          3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

          SHA512

          99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

        • C:\Users\Admin\AppData\Local\Temp\tmpB75A.tmp

          Filesize

          1KB

          MD5

          e380299eb53398115b7125b2b75c4798

          SHA1

          ee59b86ea0abf4097ff94bd940521c583803b036

          SHA256

          edb658b6577a80126eaacdf2a566755b63d7b2438fe0bcf3aea83930036811f3

          SHA512

          d9e3f3b1370fe4fce4a631a5d0669cef34bfe83dec146b606eff562c7cc450639304a732104f425a7ccfdded58064f28a98434a59ed8d93b595d64d1e1a2dde1

        • memory/812-78-0x0000000007180000-0x000000000719A000-memory.dmp

          Filesize

          104KB

        • memory/812-93-0x00000000073C0000-0x00000000073D4000-memory.dmp

          Filesize

          80KB

        • memory/812-81-0x0000000007380000-0x0000000007391000-memory.dmp

          Filesize

          68KB

        • memory/812-80-0x0000000007400000-0x0000000007496000-memory.dmp

          Filesize

          600KB

        • memory/812-79-0x00000000071F0000-0x00000000071FA000-memory.dmp

          Filesize

          40KB

        • memory/812-77-0x00000000077D0000-0x0000000007E4A000-memory.dmp

          Filesize

          6.5MB

        • memory/812-49-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/812-65-0x00000000752D0000-0x000000007531C000-memory.dmp

          Filesize

          304KB

        • memory/812-76-0x0000000007030000-0x00000000070D3000-memory.dmp

          Filesize

          652KB

        • memory/812-92-0x00000000073B0000-0x00000000073BE000-memory.dmp

          Filesize

          56KB

        • memory/812-75-0x0000000006410000-0x000000000642E000-memory.dmp

          Filesize

          120KB

        • memory/812-23-0x0000000005810000-0x0000000005876000-memory.dmp

          Filesize

          408KB

        • memory/812-22-0x00000000056A0000-0x0000000005706000-memory.dmp

          Filesize

          408KB

        • memory/812-21-0x0000000004EB0000-0x0000000004ED2000-memory.dmp

          Filesize

          136KB

        • memory/812-64-0x0000000006430000-0x0000000006462000-memory.dmp

          Filesize

          200KB

        • memory/812-25-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/812-94-0x00000000074C0000-0x00000000074DA000-memory.dmp

          Filesize

          104KB

        • memory/812-27-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/812-95-0x00000000074A0000-0x00000000074A8000-memory.dmp

          Filesize

          32KB

        • memory/812-98-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2608-47-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2608-6-0x0000000006CA0000-0x0000000006CBE000-memory.dmp

          Filesize

          120KB

        • memory/2608-50-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2608-1-0x0000000000B90000-0x0000000000C82000-memory.dmp

          Filesize

          968KB

        • memory/2608-2-0x0000000005C80000-0x0000000006224000-memory.dmp

          Filesize

          5.6MB

        • memory/2608-3-0x00000000056D0000-0x0000000005762000-memory.dmp

          Filesize

          584KB

        • memory/2608-4-0x00000000056A0000-0x00000000056AA000-memory.dmp

          Filesize

          40KB

        • memory/2608-5-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2608-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

          Filesize

          4KB

        • memory/2608-7-0x0000000006840000-0x0000000006850000-memory.dmp

          Filesize

          64KB

        • memory/2608-8-0x0000000006870000-0x0000000006886000-memory.dmp

          Filesize

          88KB

        • memory/2608-9-0x0000000006CE0000-0x0000000006D5C000-memory.dmp

          Filesize

          496KB

        • memory/2608-10-0x0000000009280000-0x000000000931C000-memory.dmp

          Filesize

          624KB

        • memory/2608-16-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

          Filesize

          4KB

        • memory/3628-82-0x00000000752D0000-0x000000007531C000-memory.dmp

          Filesize

          304KB

        • memory/3628-26-0x00000000059B0000-0x0000000005D04000-memory.dmp

          Filesize

          3.3MB

        • memory/3628-15-0x0000000004A70000-0x0000000004AA6000-memory.dmp

          Filesize

          216KB

        • memory/3628-20-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/3628-24-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/3628-102-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/3628-18-0x0000000074A40000-0x00000000751F0000-memory.dmp

          Filesize

          7.7MB

        • memory/3628-52-0x0000000006090000-0x00000000060DC000-memory.dmp

          Filesize

          304KB

        • memory/3628-17-0x00000000050E0000-0x0000000005708000-memory.dmp

          Filesize

          6.2MB

        • memory/3628-51-0x0000000006000000-0x000000000601E000-memory.dmp

          Filesize

          120KB

        • memory/3948-62-0x0000000005620000-0x000000000563E000-memory.dmp

          Filesize

          120KB

        • memory/3948-46-0x0000000000400000-0x000000000043A000-memory.dmp

          Filesize

          232KB

        • memory/3948-60-0x00000000053C0000-0x00000000053CA000-memory.dmp

          Filesize

          40KB

        • memory/3948-63-0x00000000063D0000-0x00000000063DA000-memory.dmp

          Filesize

          40KB

        • memory/3948-61-0x00000000053D0000-0x00000000053DC000-memory.dmp

          Filesize

          48KB