Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2024, 01:47

General

  • Target
    f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe
  • Size 1.4MB
  • Sample240419-b7tkvsed5w
  • SHA256 6d2f006a4741cf8f3477610f009e174f4a3229eb08c8a7a4b63b7c52737f2501
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • norahbrooks.duckdns.org:7610

  • 127.0.0.1:7610

Mutex
  • ab5d6600-9598-4370-89cc-0c0020224d4f

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-03-09T12:54:48.671473136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7610

  • 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

    ab5d6600-9598-4370-89cc-0c0020224d4f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    norahbrooks.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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eJGtoI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFCBF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:388
    • C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe"
      2⤵
        PID:1688
      • C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe"
        2⤵
          PID:2620
        • C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe"
          2⤵
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:540

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\f93d2448f826b78ef0fabe994a5c86ee_JaffaCakes118.exe.log
            • Size 1KB
            • SHA256 c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
            • MD5 SHA1 SHA512

            tmpFCBF.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\tmpFCBF.tmp
            • Size 1KB
            • SHA256 65c98314616ecc26f75400dabb82fa0d1d417b4510542b37ee4ffa74c77efb36
            • MD5 SHA1 SHA512

            memory/540-29-0x00000000050C0000-0x00000000050D0000-memory.dmp

            memory/540-28-0x0000000074A20000-0x00000000751D0000-memory.dmp

            memory/540-27-0x0000000005E80000-0x0000000005E8A000-memory.dmp

            memory/540-26-0x0000000005D50000-0x0000000005D6E000-memory.dmp

            memory/540-25-0x00000000050B0000-0x00000000050BA000-memory.dmp

            memory/540-23-0x00000000050C0000-0x00000000050D0000-memory.dmp

            memory/540-22-0x0000000074A20000-0x00000000751D0000-memory.dmp

            memory/540-18-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/5104-6-0x0000000004E00000-0x0000000004E0A000-memory.dmp

            memory/5104-21-0x0000000074A20000-0x00000000751D0000-memory.dmp

            memory/5104-12-0x0000000008260000-0x000000000829A000-memory.dmp

            memory/5104-10-0x0000000005000000-0x0000000005010000-memory.dmp

            memory/5104-9-0x0000000074A20000-0x00000000751D0000-memory.dmp

            memory/5104-8-0x0000000004E40000-0x0000000004E5E000-memory.dmp

            memory/5104-7-0x0000000004F40000-0x0000000004F96000-memory.dmp

            memory/5104-11-0x0000000005CA0000-0x0000000005D46000-memory.dmp

            memory/5104-1-0x0000000074A20000-0x00000000751D0000-memory.dmp

            memory/5104-5-0x0000000005000000-0x0000000005010000-memory.dmp

            memory/5104-4-0x0000000004EA0000-0x0000000004F32000-memory.dmp

            memory/5104-3-0x00000000053B0000-0x0000000005954000-memory.dmp

            memory/5104-2-0x0000000004D60000-0x0000000004DFC000-memory.dmp

            memory/5104-0-0x0000000000390000-0x00000000004FA000-memory.dmp