Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-10-2024 03:37

General

  • Target

    gunzipped.exe

  • Size

    732KB

  • MD5

    1465433d79bc8b7d788587ed6119da4d

  • SHA1

    39f03590423665166191484ef0c030dc66173d92

  • SHA256

    ebab7ddccea1d6b5a5d4e69bf2dccd2684fc00f5955ca5e6bc5bc51833247232

  • SHA512

    44b918df538d06ab0492f0779c2d5319197257ba0499c965bd681f0416af0a351f6d97dce086766eedfcd7afafcfde5e33b620833be655fb9e1e9232c7692f11

  • SSDEEP

    12288:iOBK/h58CBLVwHNsy7NnbWIkz4m17dJnQ1kPIi1RveBYT/kR:iOBij8CL4sm2j7dJn1Ii1RWBYu

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

udignost01.ddns.net:2024

79.110.49.176:2024

Mutex

01a61652-cfc8-4cdd-90f8-a8280cbad3f0

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.110.49.176

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-07-28T11:44:56.682390236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2024

  • default_group

    pullout

  • 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

    01a61652-cfc8-4cdd-90f8-a8280cbad3f0

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    udignost01.ddns.net

  • primary_dns_server

    8.8.8.8

  • 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
  • Checks whether UAC is enabled 1 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 7 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 20 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\gunzipped.exe
    "C:\Users\Admin\AppData\Local\Temp\gunzipped.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:4808
    • 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\gunzipped.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NAytADOHXq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:816
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NAytADOHXq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFF9.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:848
    • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
      "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • 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:2640
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp13D1.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5096
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1662.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1504

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

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    2e9d77efbaf793a26e6b0340e77c782d

    SHA1

    cd30b06c5533bc4405547f677e60a5fa6e096fd8

    SHA256

    f032e8444b26b9a109fc6b6198b8399534efdddc1eb5838e58fbfd2d24215740

    SHA512

    9ee19d0abf429dfe9f78013f8c092b2eb56c8ed912586f293f0f2455f32515e2a6ec896d03b4e97eb86183385b68e1a5ed37f962deaee97f06e807b41e053c98

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ilmj02vb.cdz.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp13D1.tmp

    Filesize

    1KB

    MD5

    42f7159e831591530fb8cdd62d4650a6

    SHA1

    5d951d429a25957ca5fc3be282774f148e2f4f81

    SHA256

    aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8

    SHA512

    8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc

  • C:\Users\Admin\AppData\Local\Temp\tmp1662.tmp

    Filesize

    1KB

    MD5

    0479d5f304ef2d7e3c15fb24a99f88c1

    SHA1

    8edbb1450a656fac5f5e96779ffe440ee8c1aec9

    SHA256

    112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

    SHA512

    537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

  • C:\Users\Admin\AppData\Local\Temp\tmpFF9.tmp

    Filesize

    1KB

    MD5

    93111243d67a62e009dac23d723cc7a0

    SHA1

    94a0210b4f69692ae6c24d4f402d48dd27af3b06

    SHA256

    106a71e793931c95fd2e90f2ed4c32dcb137786089ae3020cd3e349ef68f5180

    SHA512

    84b8c1aa88dc0879ed2e53f6ab6e4e0b4215c2e494b11d9e4bcaa915b2c9742cc732f44b73f6eb3518b45a7e41d5d13c8b8c44363f506ddbbd4b14471bf24ab1

  • memory/816-106-0x00000000079D0000-0x00000000079D8000-memory.dmp

    Filesize

    32KB

  • memory/816-19-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/816-100-0x0000000007720000-0x000000000772A000-memory.dmp

    Filesize

    40KB

  • memory/816-113-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/816-74-0x0000000074FC0000-0x000000007500C000-memory.dmp

    Filesize

    304KB

  • memory/816-33-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/816-20-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1752-103-0x00000000070B0000-0x00000000070BE000-memory.dmp

    Filesize

    56KB

  • memory/1752-101-0x0000000007100000-0x0000000007196000-memory.dmp

    Filesize

    600KB

  • memory/1752-17-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1752-16-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1752-15-0x0000000004590000-0x00000000045C6000-memory.dmp

    Filesize

    216KB

  • memory/1752-25-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1752-24-0x0000000005530000-0x0000000005596000-memory.dmp

    Filesize

    408KB

  • memory/1752-23-0x0000000004C50000-0x0000000004CB6000-memory.dmp

    Filesize

    408KB

  • memory/1752-27-0x00000000055A0000-0x00000000058F4000-memory.dmp

    Filesize

    3.3MB

  • memory/1752-102-0x0000000007080000-0x0000000007091000-memory.dmp

    Filesize

    68KB

  • memory/1752-104-0x00000000070C0000-0x00000000070D4000-memory.dmp

    Filesize

    80KB

  • memory/1752-18-0x0000000004D10000-0x0000000005338000-memory.dmp

    Filesize

    6.2MB

  • memory/1752-105-0x00000000071C0000-0x00000000071DA000-memory.dmp

    Filesize

    104KB

  • memory/1752-22-0x0000000004AB0000-0x0000000004AD2000-memory.dmp

    Filesize

    136KB

  • memory/1752-107-0x00000000071A0000-0x00000000071A8000-memory.dmp

    Filesize

    32KB

  • memory/1752-56-0x0000000005B70000-0x0000000005BBC000-memory.dmp

    Filesize

    304KB

  • memory/1752-55-0x0000000005B40000-0x0000000005B5E000-memory.dmp

    Filesize

    120KB

  • memory/1752-114-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1752-99-0x0000000006E80000-0x0000000006E9A000-memory.dmp

    Filesize

    104KB

  • memory/1752-98-0x00000000074D0000-0x0000000007B4A000-memory.dmp

    Filesize

    6.5MB

  • memory/1752-73-0x0000000006B10000-0x0000000006B2E000-memory.dmp

    Filesize

    120KB

  • memory/1752-62-0x0000000006AD0000-0x0000000006B02000-memory.dmp

    Filesize

    200KB

  • memory/1752-63-0x0000000074FC0000-0x000000007500C000-memory.dmp

    Filesize

    304KB

  • memory/1752-84-0x0000000006B30000-0x0000000006BD3000-memory.dmp

    Filesize

    652KB

  • memory/2640-59-0x0000000005D70000-0x0000000005D8E000-memory.dmp

    Filesize

    120KB

  • memory/2640-88-0x0000000007330000-0x000000000733E000-memory.dmp

    Filesize

    56KB

  • memory/2640-87-0x0000000007300000-0x000000000731A000-memory.dmp

    Filesize

    104KB

  • memory/2640-86-0x00000000072F0000-0x0000000007302000-memory.dmp

    Filesize

    72KB

  • memory/2640-91-0x0000000007360000-0x000000000736E000-memory.dmp

    Filesize

    56KB

  • memory/2640-92-0x0000000007370000-0x0000000007384000-memory.dmp

    Filesize

    80KB

  • memory/2640-95-0x00000000073C0000-0x00000000073CE000-memory.dmp

    Filesize

    56KB

  • memory/2640-97-0x0000000007410000-0x0000000007424000-memory.dmp

    Filesize

    80KB

  • memory/2640-96-0x00000000073D0000-0x00000000073FE000-memory.dmp

    Filesize

    184KB

  • memory/2640-94-0x00000000073A0000-0x00000000073B4000-memory.dmp

    Filesize

    80KB

  • memory/2640-93-0x0000000007380000-0x0000000007390000-memory.dmp

    Filesize

    64KB

  • memory/2640-90-0x0000000007350000-0x000000000735C000-memory.dmp

    Filesize

    48KB

  • memory/2640-89-0x0000000007340000-0x0000000007352000-memory.dmp

    Filesize

    72KB

  • memory/2640-60-0x0000000006AA0000-0x0000000006AAA000-memory.dmp

    Filesize

    40KB

  • memory/2640-26-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2640-58-0x0000000005960000-0x000000000596A000-memory.dmp

    Filesize

    40KB

  • memory/4808-0-0x000000007474E000-0x000000007474F000-memory.dmp

    Filesize

    4KB

  • memory/4808-39-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4808-10-0x0000000006870000-0x00000000068EA000-memory.dmp

    Filesize

    488KB

  • memory/4808-9-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4808-8-0x000000007474E000-0x000000007474F000-memory.dmp

    Filesize

    4KB

  • memory/4808-7-0x0000000005420000-0x0000000005432000-memory.dmp

    Filesize

    72KB

  • memory/4808-6-0x0000000005580000-0x000000000561C000-memory.dmp

    Filesize

    624KB

  • memory/4808-5-0x00000000052A0000-0x00000000052AA000-memory.dmp

    Filesize

    40KB

  • memory/4808-4-0x0000000074740000-0x0000000074EF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4808-3-0x0000000005330000-0x00000000053C2000-memory.dmp

    Filesize

    584KB

  • memory/4808-2-0x0000000005840000-0x0000000005DE4000-memory.dmp

    Filesize

    5.6MB

  • memory/4808-1-0x00000000007F0000-0x00000000008AA000-memory.dmp

    Filesize

    744KB