Analysis

  • max time kernel
    138s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2024 18:11

General

  • Target

    0211ec291040f1e5ada7c762b20df963381cae88923e3f103d588a382d3a19f3.exe

  • Size

    670KB

  • MD5

    b40a08e60b9b7a3504d142c07ba18f2f

  • SHA1

    786e1981e4109f32da5b5c93221a3b9e8669046a

  • SHA256

    0211ec291040f1e5ada7c762b20df963381cae88923e3f103d588a382d3a19f3

  • SHA512

    7beea84ee5405da69039fd36819f73e8165d1eebdaa8df97552495556969d9a1b7c57cc81c566c91c006ab1a288e828dde1dd7c0dca819c9e05f47bbe19a1876

  • SSDEEP

    12288:/nxa/zmcDXmuUMtKeYSsz0NEFx8HnzNN6YZ/g5DO0lD9GIbzH:/nxaakuMsetszEELwnzTFG5flD9rL

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2n.duckdns.org:65140

december2nd.ddns.net:65140

Mutex

5e26ab75-1b3f-4c8b-a159-3a61aeef3310

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2nd.ddns.net

  • backup_dns_server

  • buffer_size

    65538

  • build_time

    2024-05-07T02:47:09.586481736Z

  • 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

    65140

  • default_group

    NO GREE

  • enable_debug_mode

    true

  • gc_threshold

    1.0485772e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.0485772e+07

  • mutex

    5e26ab75-1b3f-4c8b-a159-3a61aeef3310

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2n.duckdns.org

  • 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

    8009

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0211ec291040f1e5ada7c762b20df963381cae88923e3f103d588a382d3a19f3.exe
    "C:\Users\Admin\AppData\Local\Temp\0211ec291040f1e5ada7c762b20df963381cae88923e3f103d588a382d3a19f3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3936
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mzHFviYTm.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mzHFviYTm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDA91.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4660
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDD8F.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2092
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDDBE.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dpfxg4q4.434.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpDA91.tmp

    Filesize

    1KB

    MD5

    7981eebe755ccc342576981272e781a6

    SHA1

    7f8ac0e50a7bd2fb923b85944aff8df941973e54

    SHA256

    665d2204f88763f169136196875e2ca72039416460b61c330863a938db0090e8

    SHA512

    eb0dbe1b45d84ec140b62a13117df1379b61f94004bc2da17b000d322c29cf7493b5de57f601d583b9a742c3f7d3cbd12fffbf0360cba142237c08099947a2e0

  • C:\Users\Admin\AppData\Local\Temp\tmpDD8F.tmp

    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

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

    Filesize

    1KB

    MD5

    5fea24e883e06e4df6d240dc72abf2c5

    SHA1

    d778bf0f436141e02df4b421e8188abdcc9a84a4

    SHA256

    e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

    SHA512

    15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

  • memory/2576-48-0x00000000068C0000-0x00000000068DE000-memory.dmp

    Filesize

    120KB

  • memory/2576-49-0x00000000069F0000-0x00000000069FA000-memory.dmp

    Filesize

    40KB

  • memory/2576-23-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/2576-22-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/2576-47-0x0000000005A70000-0x0000000005A7C000-memory.dmp

    Filesize

    48KB

  • memory/2576-46-0x0000000005950000-0x000000000595A000-memory.dmp

    Filesize

    40KB

  • memory/2576-77-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-6-0x0000000004F00000-0x0000000004F18000-memory.dmp

    Filesize

    96KB

  • memory/3936-7-0x0000000004F20000-0x0000000004F2E000-memory.dmp

    Filesize

    56KB

  • memory/3936-17-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-14-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

    Filesize

    4KB

  • memory/3936-10-0x0000000008780000-0x000000000881C000-memory.dmp

    Filesize

    624KB

  • memory/3936-9-0x0000000008990000-0x0000000008A0C000-memory.dmp

    Filesize

    496KB

  • memory/3936-8-0x0000000005050000-0x0000000005066000-memory.dmp

    Filesize

    88KB

  • memory/3936-0-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

    Filesize

    4KB

  • memory/3936-5-0x0000000004C40000-0x0000000004C4A000-memory.dmp

    Filesize

    40KB

  • memory/3936-25-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-4-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3936-3-0x0000000004B90000-0x0000000004C22000-memory.dmp

    Filesize

    584KB

  • memory/3936-2-0x0000000005090000-0x0000000005634000-memory.dmp

    Filesize

    5.6MB

  • memory/3936-1-0x0000000000100000-0x00000000001AE000-memory.dmp

    Filesize

    696KB

  • memory/4156-16-0x0000000002E00000-0x0000000002E36000-memory.dmp

    Filesize

    216KB

  • memory/4156-26-0x0000000005990000-0x00000000059B2000-memory.dmp

    Filesize

    136KB

  • memory/4156-27-0x0000000005A30000-0x0000000005A96000-memory.dmp

    Filesize

    408KB

  • memory/4156-28-0x0000000005AA0000-0x0000000005B06000-memory.dmp

    Filesize

    408KB

  • memory/4156-21-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4156-20-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4156-40-0x00000000061C0000-0x0000000006514000-memory.dmp

    Filesize

    3.3MB

  • memory/4156-50-0x0000000006720000-0x000000000673E000-memory.dmp

    Filesize

    120KB

  • memory/4156-51-0x0000000006770000-0x00000000067BC000-memory.dmp

    Filesize

    304KB

  • memory/4156-52-0x00000000076F0000-0x0000000007722000-memory.dmp

    Filesize

    200KB

  • memory/4156-53-0x0000000070AD0000-0x0000000070B1C000-memory.dmp

    Filesize

    304KB

  • memory/4156-63-0x0000000006D10000-0x0000000006D2E000-memory.dmp

    Filesize

    120KB

  • memory/4156-64-0x0000000007730000-0x00000000077D3000-memory.dmp

    Filesize

    652KB

  • memory/4156-65-0x00000000080B0000-0x000000000872A000-memory.dmp

    Filesize

    6.5MB

  • memory/4156-66-0x0000000007A70000-0x0000000007A8A000-memory.dmp

    Filesize

    104KB

  • memory/4156-67-0x0000000007AE0000-0x0000000007AEA000-memory.dmp

    Filesize

    40KB

  • memory/4156-68-0x0000000007CF0000-0x0000000007D86000-memory.dmp

    Filesize

    600KB

  • memory/4156-69-0x0000000007C70000-0x0000000007C81000-memory.dmp

    Filesize

    68KB

  • memory/4156-70-0x0000000007CA0000-0x0000000007CAE000-memory.dmp

    Filesize

    56KB

  • memory/4156-71-0x0000000007CB0000-0x0000000007CC4000-memory.dmp

    Filesize

    80KB

  • memory/4156-72-0x0000000007DB0000-0x0000000007DCA000-memory.dmp

    Filesize

    104KB

  • memory/4156-73-0x0000000007D90000-0x0000000007D98000-memory.dmp

    Filesize

    32KB

  • memory/4156-76-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4156-19-0x0000000005B90000-0x00000000061B8000-memory.dmp

    Filesize

    6.2MB