Overview

overview

10

Static

static

3

JaffaCakes...a5.exe

windows10-2004-x64

10

JaffaCakes...a5.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250610-en
  • resource tags

    arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/11/2025, 13:09

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General

  • Target
    JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe
  • Size 592KB
  • Sample251104-qd62essrhl
  • SHA256 058ac71adf9a385201ef074ae6a336911c94f3ed68db8d7658c7d3bcad760b2f
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasiondiscoveryexecutionnanocorekeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • cjay55.duckdns.org:1943

  • 103.200.6.62:1943

Mutex

  • 765e0744-1fa1-4cfb-afba-1ae344f5f3b7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    103.200.6.62

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-08-04T23:39:40.793880236Z

  • 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

    1943

  • default_group

    Default

  • 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

    765e0744-1fa1-4cfb-afba-1ae344f5f3b7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    cjay55.duckdns.org

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Nanocore family
    nanocore
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    defense_evasiontrojan
  • Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5840
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • 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:5344
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC9D8.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5828
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCBCD.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5440
  • C:\Program Files (x86)\UDP Service\udpsvc.exe
    "C:\Program Files (x86)\UDP Service\udpsvc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Program Files (x86)\UDP Service\udpsvc.exe
      "C:\Program Files (x86)\UDP Service\udpsvc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:4232
  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5044
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_332a376256bb70a809cac62fddfcc9a5.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:4352

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        udpsvc.exe
        • Path C:\Program Files (x86)\UDP Service\udpsvc.exe
        • Size 592KB
        • SHA256 058ac71adf9a385201ef074ae6a336911c94f3ed68db8d7658c7d3bcad760b2f
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        tmpC9D8.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\tmpC9D8.tmp
        • Size 1KB
        • SHA256 6a6dcfb4f1a4fc261ebf96acd66fa1f54140df60395e2bd448c78339861db1b8
        • MD5 SHA1 SHA512
        Submit Download

        tmpCBCD.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\tmpCBCD.tmp
        • Size 1KB
        • SHA256 bd1b0eab0a2e61816941ca6060e9c63a10184038c8e7b67ef1fbb4bd533481c6
        • MD5 SHA1 SHA512
        Submit Download

        memory/576-27-0x0000000002260000-0x000000000226E000-memory.dmp
        Download

        memory/4232-34-0x0000000000400000-0x0000000000438000-memory.dmp
        Download

        memory/5344-12-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-8-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-9-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-7-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-6-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-5-0x0000000074921000-0x0000000074922000-memory.dmp
        Download

        memory/5344-24-0x0000000000720000-0x000000000072E000-memory.dmp
        Download

        memory/5344-4-0x0000000000400000-0x0000000000495000-memory.dmp
        Download

        memory/5344-28-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5344-29-0x0000000074920000-0x0000000074ED1000-memory.dmp
        Download

        memory/5840-2-0x0000000002390000-0x000000000239E000-memory.dmp
        Download

        memory/5840-3-0x0000000002390000-0x000000000239E000-memory.dmp
        Download