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Firmware Rootkits

Firmware is a small static code that runs on devices ranging from consumer electronics to anything that controls heavy machinery. In computers, chips a.k.a. the real interactive hardware, such as the BIOS, CPU, GPU, etc. runs firmware code to perform specific functions. Network devices ranging from firewalls, routers, switches, IDS/IPS, etc. runs firmware a.k.a. microcode on their chipsets. Firmware is tiny and not modified often like the userland or kernelland software. Thus, integrity checks are very rarely done at this layer. What would you do, if you are a bad guy and you know that you have a place to reside that would never be monitored ever? Well, if you are the smart one you would say "YES, I would love to go there".

Rootkit is a type of Malware that would never say NO to something that allows it to retain unrestricted administrative access, which means that it would never let go of firmware option to reside on, given the chance. A firmware rootkit has to go through kernelland to go to reach the firmware layer, just like how the bad guys would have to go through the village and various check points, to enter the castle.

This section of rootkit analytics will soon discuss about rootkits targeting:

  • BIOS
  • PCI
  • Hypervisor
  • CPU
  • GPU
  • Cell-processor
  • Network Devices

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Rootkits & Enterprise: Enterprise is a major victim to rootkits. What could rootkits do to them?[read more]

Rootkits & Home-users: Do home-users know the seriousness of rootkits? What should a home-user know about rootkits?[read more]

Rootkits & Information Warfare: What does the silent war of intelligence and national security, got to do with rootkit analysis?[read more]

Userland Rootkits: What should one know about userland rootkits?[read more]

Kernelland Rootkits: What should one know about kernelland rootkits?[read more]

ElfStat: ElfStat is a tool designed for detecting any kernel malware that modifies the text segment of the kernel in memory...[read more]

Syscall/Kernel function interception: This is a more stealth method of syscall hijacking without having to directly modify the syscall table; instead the first several bytes of the syscall are overwritten with a jump to the new code...[read more]

Syscall Interception: What should you know about Syscall interception by directly modifying the Syscall table?[read more]

KsiD [Kernel Symbol Interception Detection]: This tool is designed to detect kernel rootkits and kernel malware which hijack syscalls and kernel functions ...[read more]

IDT /dev/kmem rootkit method: This can be done using several methods including overwriting the first several bytes of the syscall with a jump to other code, or modifying the function pointers.[read more]

Hidden Process Detection: Hidden Process Detection [HPD] using Direct NT System Call Implemenation, PIDB (Process ID Bruteforce) method, CSRSS Process Handle Enumeration and other methods...[read more]

Hidden Registry Detection: Reason for Hiding the Registry Entries, Rootkit techniques to hide, and Detecting Hidden Registry Entries Using Direct NT System Call Method and Directly Reading Hives Method...[read more]

Hidden Service Detection: Hidden Rootkit Services Detection Methods...Enumerating Processes with 'NtControlPipe', Hook Bypass Method through Mapped Image, Services Enumerating Child Processes of Services.exe, Enumerating Services Registry Key...[read more]

Syscall Handler Checker [SHC]: This tool simply verifies whether or not the system call handler system_call() has been patched to call a phony sys_call_table. If a phony sys_call_table appears to be in use, a tool like elfstat can be used for further analysis...[read more]

Firmware Rootkits: Firmware is a small static code that runs on devices ranging from consumer electronics to anything that controls heavy machinery...[read more]

Hypervisor Rootkits: This comes under both firmware and hardware rootkits. The reason being, hypervisor is a virtual environment that runs on the hardware, but basically it is a firmware. Hence, we have drawn the line and dropped this rootkit in the firmware category of rootkits...[read more]

Publications: In this section, we are planning to list all the papers that we have published so far that are rootkit related.

Backdoor Ultimate Defender: In this paper (Backdoor.Win32.UltimateDefender.gtz - Reversing) we analyze install.exe that presents the typical structure of an Medium Evoluted Malware, with basical Obfuscated-Dummy Code...[read more]

Socialize: You could socialize with us by many ways...[read more]

About: Learn about rootkit analytics here...[read more]

Contact us: How can you reach us...[read more]

Our Team: Read more about the rootkit analytics team...[read more]

dwtf v1.0: dwtf is a DLL copying engine ... [read more]

Exploring ADS: Alternate Data Stream (ADS) is the lesser known feature of Windows NTFS file system which...[read more]

Installations [from RootkitAnalytics.com]

ToolsCount
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Elfstat4481
dwtf3595
KsiD3142
SHC2337

NOTE: Our tools are listed in many sites and torrents, which makes it hard for us to track all downloads. Hence, we are listing only the total installations from our website.

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