Analysis

  • max time kernel
    148s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-04-2024 06:29

General

  • Target

    02a1d12573f25e2c3dc5a3cbeab95ba4_JaffaCakes118.exe

  • Size

    822KB

  • MD5

    02a1d12573f25e2c3dc5a3cbeab95ba4

  • SHA1

    148f271664a2d85954fc6ca8e8fe324cb111dc17

  • SHA256

    79eaf2d7188fe253da3171e6b4629105bb5399c125e60c90905b7d7b4ca507a6

  • SHA512

    152ade000175f8bc3ce851f9c9e467e831b97e41304f348bd434534c79e013d901193eb8b8339b9f9813f819bf4072f3c3323cac39a635579cf119a25d78f80c

  • SSDEEP

    12288:6PcNQnE3sErb7eGnwnPfJ5SuQ9eYhK5JG1c46:6PBE3so7QnPj3SUJGb6

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

testyme08.duckdns.org:2299

127.0.0.1:2299

Mutex

259f5965-e6b9-4d8a-8537-9480cf48b35e

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-08-24T11:25:42.690113836Z

  • 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

    2299

  • default_group

    New Start

  • 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

    259f5965-e6b9-4d8a-8537-9480cf48b35e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    testyme08.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02a1d12573f25e2c3dc5a3cbeab95ba4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\02a1d12573f25e2c3dc5a3cbeab95ba4_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3796
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /query
      2⤵
        PID:5000
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /sc MINUTE /tn Svhost /MO 1 /tr "C:\Users\Admin\Svhost\Svhost.exe\
        2⤵
        • Creates scheduled task(s)
        PID:4928
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
        2⤵
          PID:776
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
          2⤵
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1784
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3FD8.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:1820

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp3FD8.tmp

        Filesize

        1KB

        MD5

        c6f0625bf4c1cdfb699980c9243d3b22

        SHA1

        43de1fe580576935516327f17b5da0c656c72851

        SHA256

        8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

        SHA512

        9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

      • memory/1784-12-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/1784-24-0x0000000002E40000-0x0000000002E50000-memory.dmp

        Filesize

        64KB

      • memory/1784-23-0x00000000706A0000-0x0000000070C51000-memory.dmp

        Filesize

        5.7MB

      • memory/1784-22-0x00000000706A0000-0x0000000070C51000-memory.dmp

        Filesize

        5.7MB

      • memory/1784-15-0x00000000706A0000-0x0000000070C51000-memory.dmp

        Filesize

        5.7MB

      • memory/1784-16-0x00000000706A0000-0x0000000070C51000-memory.dmp

        Filesize

        5.7MB

      • memory/1784-17-0x0000000002E40000-0x0000000002E50000-memory.dmp

        Filesize

        64KB

      • memory/3796-4-0x00000000055F0000-0x0000000005600000-memory.dmp

        Filesize

        64KB

      • memory/3796-11-0x0000000005B20000-0x0000000005BBC000-memory.dmp

        Filesize

        624KB

      • memory/3796-10-0x0000000005A40000-0x0000000005A78000-memory.dmp

        Filesize

        224KB

      • memory/3796-14-0x0000000074870000-0x0000000075020000-memory.dmp

        Filesize

        7.7MB

      • memory/3796-7-0x00000000058A0000-0x00000000058AC000-memory.dmp

        Filesize

        48KB

      • memory/3796-6-0x00000000059E0000-0x0000000005A24000-memory.dmp

        Filesize

        272KB

      • memory/3796-5-0x0000000005690000-0x000000000569A000-memory.dmp

        Filesize

        40KB

      • memory/3796-0-0x0000000000D30000-0x0000000000E02000-memory.dmp

        Filesize

        840KB

      • memory/3796-3-0x00000000056D0000-0x0000000005762000-memory.dmp

        Filesize

        584KB

      • memory/3796-2-0x0000000005C80000-0x0000000006224000-memory.dmp

        Filesize

        5.6MB

      • memory/3796-1-0x0000000074870000-0x0000000075020000-memory.dmp

        Filesize

        7.7MB