Analysis

  • max time kernel
    148s
  • max time network
    154s
  • 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 14 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:4076
    • 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:4072
    • 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:4752
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA5F4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3736
    • 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:1676
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAB92.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1280
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAE33.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1696

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

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    18KB

    MD5

    660b1d8c37729cff9197fc2740d3c281

    SHA1

    0a02898fca73f026d38e616cc4835cd1bbba7074

    SHA256

    0f2ed901d885ac7b4b60a294b6f8164f016153ad3ec3c81d6248aca1d092a0e4

    SHA512

    f6366c6189f1c6d42dfc87ea09a53c5d6f5f938a50aceb00cdd92b452af24769ee2ac65441ae2e1b3836d341a81d1abfe6f2fef4bff591bba3424da87634d8d2

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pcp2a040.ihs.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA5F4.tmp
    Filesize

    1KB

    MD5

    5dbe93b61dc060e43b70e8bd65adb74c

    SHA1

    5181a4c24ac847cbf049be5c35cf7c35e4847e40

    SHA256

    8c8fae4d9e314131ab5bb0c40b93e829af09f778088d0710a24b110d606ada64

    SHA512

    35905cba8ce6bd1e31c0b3f39a73c6a7b48274682bd0bfec7c079d25078e1b672fbdf79c9d0d54f383edbcaeda87028e55e3cccab53227843db20c50bc8c71b2

  • C:\Users\Admin\AppData\Local\Temp\tmpAE33.tmp
    Filesize

    1KB

    MD5

    e380299eb53398115b7125b2b75c4798

    SHA1

    ee59b86ea0abf4097ff94bd940521c583803b036

    SHA256

    edb658b6577a80126eaacdf2a566755b63d7b2438fe0bcf3aea83930036811f3

    SHA512

    d9e3f3b1370fe4fce4a631a5d0669cef34bfe83dec146b606eff562c7cc450639304a732104f425a7ccfdded58064f28a98434a59ed8d93b595d64d1e1a2dde1

  • memory/1676-63-0x0000000006A50000-0x0000000006A5A000-memory.dmp
    Filesize

    40KB

  • memory/1676-62-0x0000000006920000-0x000000000693E000-memory.dmp
    Filesize

    120KB

  • memory/1676-61-0x0000000005A40000-0x0000000005A4C000-memory.dmp
    Filesize

    48KB

  • memory/1676-45-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1676-60-0x0000000005A30000-0x0000000005A3A000-memory.dmp
    Filesize

    40KB

  • memory/4072-102-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-82-0x0000000074DE0000-0x0000000074E2C000-memory.dmp
    Filesize

    304KB

  • memory/4072-51-0x0000000006010000-0x000000000602E000-memory.dmp
    Filesize

    120KB

  • memory/4072-17-0x0000000005170000-0x0000000005798000-memory.dmp
    Filesize

    6.2MB

  • memory/4072-18-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-19-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-52-0x0000000006030000-0x000000000607C000-memory.dmp
    Filesize

    304KB

  • memory/4072-15-0x0000000004A30000-0x0000000004A66000-memory.dmp
    Filesize

    216KB

  • memory/4072-23-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4076-7-0x00000000059D0000-0x00000000059E0000-memory.dmp
    Filesize

    64KB

  • memory/4076-48-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4076-9-0x0000000006C20000-0x0000000006C9C000-memory.dmp
    Filesize

    496KB

  • memory/4076-6-0x0000000005990000-0x00000000059AE000-memory.dmp
    Filesize

    120KB

  • memory/4076-5-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4076-4-0x00000000056A0000-0x00000000056AA000-memory.dmp
    Filesize

    40KB

  • memory/4076-0-0x000000007453E000-0x000000007453F000-memory.dmp
    Filesize

    4KB

  • memory/4076-8-0x0000000005A00000-0x0000000005A16000-memory.dmp
    Filesize

    88KB

  • memory/4076-3-0x00000000056E0000-0x0000000005772000-memory.dmp
    Filesize

    584KB

  • memory/4076-49-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4076-10-0x00000000092D0000-0x000000000936C000-memory.dmp
    Filesize

    624KB

  • memory/4076-16-0x000000007453E000-0x000000007453F000-memory.dmp
    Filesize

    4KB

  • memory/4076-2-0x0000000005C90000-0x0000000006234000-memory.dmp
    Filesize

    5.6MB

  • memory/4076-1-0x0000000000BB0000-0x0000000000CA2000-memory.dmp
    Filesize

    968KB

  • memory/4752-46-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4752-50-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4752-44-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4752-75-0x0000000006340000-0x000000000635E000-memory.dmp
    Filesize

    120KB

  • memory/4752-76-0x0000000007010000-0x00000000070B3000-memory.dmp
    Filesize

    652KB

  • memory/4752-65-0x0000000074DE0000-0x0000000074E2C000-memory.dmp
    Filesize

    304KB

  • memory/4752-64-0x0000000006DD0000-0x0000000006E02000-memory.dmp
    Filesize

    200KB

  • memory/4752-78-0x0000000007140000-0x000000000715A000-memory.dmp
    Filesize

    104KB

  • memory/4752-77-0x0000000007790000-0x0000000007E0A000-memory.dmp
    Filesize

    6.5MB

  • memory/4752-79-0x00000000071B0000-0x00000000071BA000-memory.dmp
    Filesize

    40KB

  • memory/4752-80-0x00000000073C0000-0x0000000007456000-memory.dmp
    Filesize

    600KB

  • memory/4752-81-0x0000000007340000-0x0000000007351000-memory.dmp
    Filesize

    68KB

  • memory/4752-24-0x00000000057B0000-0x0000000005B04000-memory.dmp
    Filesize

    3.3MB

  • memory/4752-92-0x0000000007390000-0x000000000739E000-memory.dmp
    Filesize

    56KB

  • memory/4752-93-0x00000000073A0000-0x00000000073B4000-memory.dmp
    Filesize

    80KB

  • memory/4752-94-0x0000000007490000-0x00000000074AA000-memory.dmp
    Filesize

    104KB

  • memory/4752-95-0x0000000007480000-0x0000000007488000-memory.dmp
    Filesize

    32KB

  • memory/4752-98-0x0000000074530000-0x0000000074CE0000-memory.dmp
    Filesize

    7.7MB

  • memory/4752-20-0x0000000004D50000-0x0000000004D72000-memory.dmp
    Filesize

    136KB

  • memory/4752-21-0x0000000004DF0000-0x0000000004E56000-memory.dmp
    Filesize

    408KB

  • memory/4752-22-0x0000000004ED0000-0x0000000004F36000-memory.dmp
    Filesize

    408KB