Vijay Krishnan Avinesh Dupat. A rootkit is software that enables continued privileged access to a computer while actively hiding its presence from administrators.

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Presentation transcript:

Vijay Krishnan Avinesh Dupat

A rootkit is software that enables continued privileged access to a computer while actively hiding its presence from administrators by subverting standard operating system functionality or other applications The main purpose of a Rootkit is to make unauthorized modifications to the software in your PC

Provide an attacker full access via backdoor techniques. Conceal other malware. Appropriate the compromised machine as a zombie computer for attacks on other computers. Non Hostile Rootkits-Anti-theft protection, Enforcement of DRM, Enhance emulation software and security software

Attacker identifies an existing vulnerability in a target system. After gaining access to a vulnerable system, the attacker can install a rootkit manually. Can covertly steal user passwords, credit card information, computing resources, or to conduct other unauthorized activities without the knowledge of administrator

Spyware : Modifying software programs for the purpose of infecting it with spyware. Backdoor :Modification that is built into a software program in your computer that is not part of the original design of the program Byte Patching :Bytes are constructed in a specific order which can be modified by a rootkit Source code modification :modifying the code in the PC's software right at the main source

User mode : Run on a computer through administrator privileges Kernel mode : Installed at the same level as the PCs operating system Bootkits : A kernel-mode rootkit variant called a bootkit is used predominantly to attack full disk encryption systems Firmware : Create malcode inside the firmware while you computer is shut down

Proactive Preventing the rootkit from being installed Preventing compromise in the first place Reactive Detecting the Rootkit after it has been installed Removal of the Rootkit

The first step in prevention of Rootkit is to run in less privileged user mode. Use of the sc command in Windows XP. This locks up the Windows Service database. Use HIPS (Host based Intrusion Prevention System) tool like AntiHook Use a tool like Sandboxie which creates a sandbox like environment within which we can run any program

Very Difficult because Rootkit’s goal is to hide Antivirus products that have various levels of success with detecting rootkits. Enumerate your system's contents and boot up using a known-good operating system. Use of a packet sniffer, such as WinDump, or a network firewall

Alternative trusted medium Behavioral-based Signature-based Difference-based Integrity checking Memory dumps

Rootkit Detection tools -> Detect Rootkits Eg : Rootkit Revealer Rootkit Removal tools -> Eliminates Rootkits from the user’s system Eg : IceSword

Rebuilding the System is the BEST solution! Clean the infection Disable rootkit Boot with clean CD and remove rootkit’s resources

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THANK YOU!