General

  • Target

    https://njratnik667.hopto.org/1.exe

  • Sample

    250114-zdz3js1mfj

Malware Config

Extracted

Family

orcus

Botnet

HacKed

C2

njratnik667.hopto.org:10134

Mutex

ec0265501148482a90b3681c1b46d412

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    true

  • install_path

    C:\Windows\dllhost.exe

  • reconnect_delay

    10000

  • registry_keyname

    Defender Update

  • taskscheduler_taskname

    Windows Update

  • watchdog_path

    AppData\RuntimeBroker.exe

Targets

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

    • Orcus

      Orcus is a Remote Access Trojan that is being sold on underground forums.

    • Orcus family

    • UAC bypass

    • Orcurs Rat Executable

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Hijack Execution Flow: Executable Installer File Permissions Weakness

      Possible Turn off User Account Control's privilege elevation for standard users.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks