Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06-05-2024 05:01

General

  • Target

    1ae326db57b33cc93e2b1b99b9e552ab_JaffaCakes118.exe

  • Size

    1.3MB

  • MD5

    1ae326db57b33cc93e2b1b99b9e552ab

  • SHA1

    658f48da751b7e1f6e23b7b70ceee2b6a2f3c1aa

  • SHA256

    676fe2646ff710578e7597e7876a7bac3f9189b044bd74c09d01a5cc8643d4e3

  • SHA512

    a4c4db0a1d31e307f138415f6c946e21909ea23c11ee1db60d128ee1d49df8340f9d9c0b40650a3a8bf92c7423e7c694ebe4da5526d4d86d1c72bc9eb36c511f

  • SSDEEP

    24576:Iu6Jx3O0c+JY5UZ+XC0kGso/WaLkHBucQhUSSdUa71WY:iI0c++OCvkGsUWaJSdsY

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mybackups.duckdns.org:4782

127.0.0.1:4782

Mutex

846b578f-46a7-4eba-8502-1b7afab3c003

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-08-16T13:52:47.988123336Z

  • 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

    4782

  • 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

    846b578f-46a7-4eba-8502-1b7afab3c003

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    mybackups.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.

  • Executes dropped EXE 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1ae326db57b33cc93e2b1b99b9e552ab_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1ae326db57b33cc93e2b1b99b9e552ab_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn Regsm001 /tr "C:\Users\Admin\windows\Regsm001.exe" /sc minute /mo 1 /F
      2⤵
      • Creates scheduled task(s)
      PID:2216
    • 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:3064
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE060.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2640
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {3A847D2B-00B1-4C64-B155-35031B1BD3B7} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2780
    • C:\Users\Admin\windows\Regsm001.exe
      C:\Users\Admin\windows\Regsm001.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:680
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\SysWOW64\schtasks.exe" /create /tn Regsm001 /tr "C:\Users\Admin\windows\Regsm001.exe" /sc minute /mo 1 /F
        3⤵
        • Creates scheduled task(s)
        PID:1660
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
        3⤵
          PID:1920
      • C:\Users\Admin\windows\Regsm001.exe
        C:\Users\Admin\windows\Regsm001.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:940
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\SysWOW64\schtasks.exe" /create /tn Regsm001 /tr "C:\Users\Admin\windows\Regsm001.exe" /sc minute /mo 1 /F
          3⤵
          • Creates scheduled task(s)
          PID:1772
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
          3⤵
            PID:2676

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpE060.tmp

        Filesize

        1KB

        MD5

        c6f0625bf4c1cdfb699980c9243d3b22

        SHA1

        43de1fe580576935516327f17b5da0c656c72851

        SHA256

        8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

        SHA512

        9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

      • C:\Users\Admin\windows\Regsm001.exe

        Filesize

        1.3MB

        MD5

        1ae326db57b33cc93e2b1b99b9e552ab

        SHA1

        658f48da751b7e1f6e23b7b70ceee2b6a2f3c1aa

        SHA256

        676fe2646ff710578e7597e7876a7bac3f9189b044bd74c09d01a5cc8643d4e3

        SHA512

        a4c4db0a1d31e307f138415f6c946e21909ea23c11ee1db60d128ee1d49df8340f9d9c0b40650a3a8bf92c7423e7c694ebe4da5526d4d86d1c72bc9eb36c511f

      • memory/1920-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2676-31-0x0000000000090000-0x00000000000C8000-memory.dmp

        Filesize

        224KB

      • memory/2676-37-0x0000000000090000-0x00000000000C8000-memory.dmp

        Filesize

        224KB

      • memory/2676-36-0x0000000000090000-0x00000000000C8000-memory.dmp

        Filesize

        224KB

      • memory/2812-1-0x0000000000220000-0x0000000000221000-memory.dmp

        Filesize

        4KB

      • memory/3064-3-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3064-10-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3064-9-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3064-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/3064-2-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB