Questions tagged [rootkits]

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 term rootkit is a concatenation of "root" (the traditional name of the privileged account on Unix operating systems) and the word "kit" (which refers to the software components that implement the tool).

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Is Mac OS safer to use as far as firmware rootkits, cold boot attacks and evil maid?

Windows machines have things like TPM and Secure boot to help protect against firmware rootkits, but is Mac any safer in these regards? How does Mac work in the boot stage and is it any less ...
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Running Tails from a non-writable CD vs a USB on a PC with a UEFI infection. Would it comprimise Tails OS when loaded?

Lets say a computers UEFI is infected with a rootkit and you have a copy of Tails written to a USB drive. I am guessing it could possibly infect the Tails OS as well. Well if you were to write tails ...
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Is there a way to copy the firmware that came with my PC? [migrated]

So I bought a new Lenovo Legion 5 PC. It comes with windows preinstalled. I was wondering is there a way to copy the firmware that comes with the PC onto a USB drive without having to download it ...
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What firmware components of a PC are writeable?

What firmware components of a PC are writable? For instance which components have the ability to store rootkits or viruses?
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Is it possible to enumerate thru all the hardware IDs?

I am thinking of developing of a rather primitive CLI program for the sole purpose of detecting rootkits/bootkits/firmware modifying advanced malware. Can you iterate thru all all hardware IDs (CPUID,...
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3 votes
1 answer
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How to protect yourself from firmware viruses

What componets of a PC do firmware viruses and rootkits infect? Secure boot is supposed to protect you from these types of viruses. Although, it doesn't protect you against rootkits in UEFI firmware ...
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Is W^X enforced against UEFI DXE drivers (firmware)? Could it be if we tried?

W^X is a critical security feature, allowing us a chance to perform security analysis on data that some entity on a computer wants to execute. Windows implements this by requiring a process to call ...
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Can a running SSH connection to a rootkit infected VPS be used to attack the remote client?

If a VPS running Debian 10 Xfce as a cloud desktop has been rootkit infected and there is an ongoing SSH connection with X2Go from a client to manage this server, is it possible for an attacker on the ...
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1 vote
2 answers
367 views

How to securely create a bootable USB drive from a possibly infected system?

I'm not sure about my system so I want to completely wipe my HDD and reinstall Windows 10. But I realized that an infected system can also infect a USB bootable drive. Unfortunately, I don't have ...
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Dangers of switching sim from old phone to new one

I would like to know the dangers of switching an old sim card from an old phone to a new one. I recently got a new phone and a paranoia woke in me. Lets assume that the old phone was infected with ...
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4 votes
1 answer
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Is Sleep mode safe?

If a PC has rootkit, when it goes into sleep mode, can rootkit do anything to it while it’s in state of sleeping? Meaning steal data, open programs and basically do anything. Assuming it’s not BIOS ...
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What is the difference between "hooking" and "rooting"?

My client did a pentest and he gave us feedback about root detection. So I used RootBeer android lib to fix root detection. In their readme, they highlighted that root detection is a "game of cat ...
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What is the current (mid-2020) status of hardware rootkit/malware and possible detection/monitoring?

I've posted a question (link) related to a potential compromised computer via SSH access with root user. Although no evidence of a break-in, I'm considering extended measures to ensure (as much as ...
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3 votes
2 answers
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how would a 12-digit password be a safe guard in this situation?

So guys, I messed up with the configs in a computer and let the SSH server open to the wild with ROOT login enabled. I'm trying to assess the potential damages, which I may never know for sure. ...
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Hidden Process Discovered in Tails OS

How concerned should I be about this result from unhide? unhide-linux scan starting at: 17:02:43, 2020-03-23 Used options: logtofile [*]Searching for Hidden processes through /proc stat ...
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Security of a laptop order

What's the likelihood of a laptop being compromised when it comes directly from a trusted computer store or a large, known computer technology company? Would there be any liability if malware or ...
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Passively read key from process memory without invoking kernel (windows 10)

I have a process that loads into memory like any other process. It contains a special key. Our goal is to read this key inside memory...or while it is in transit across the data bus from cpu. The ...
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-1 votes
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Confused as to what changing the internal process of the OS is [closed]

I am a highschool student taking TestOut's Ethical Hacker Pro. Currently I am learning about rootkits and Sirefef. When explaining Sirefef, it says: Sirefef hides itself by altering the internal ...
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Find out if a process is legitimately allowed to use "shared memory segments"

rkhunter is checking for processes using shared memory segments and warns with output like: Warning: The following suspicious (large) shared memory segments have been found: Process: /usr/bin/python3....
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What are some of the benign use cases of injecting bytes into another process and creating remote thread?

Lets say, you are developing an AV, and marked any type of injecting into another process (for example openning it and writing to it) and creating remote thread malicious. If so, what will be some of ...
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Macbook Pro compromised / Rootkit. Are the files I pulled onto my external drive safe? [duplicate]

I am basically positive my macbook pro has been hacked and has a firmware rootkit installed on it, and at this point I have decided it is now a brick and I need to move onto a new computer. The ...
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Should i update the BIOS

I was reading about BIOS vulnerabilities and rootkits that have flashed malicious code to the BIOS in order to maintain access after a factory reset/operating system install or a hard drive ...
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PC Component Firmware integrity and security

I recently bought a new laptop. If you read the news you must've noticed Vault 6 and Vault 7 leaks (from Wikileaks), which contain rootkits which sit on your Hard Drive Firmware, MBR and other ...
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Can any Windows app install a kernel driver? if not, then how can Anti-Viruses install kernel drivers?

Can any application install a kernel driver? if not, then how Windows decides who can and who cannot? If AVs can install kernel drivers, considering they are an application with an installer just like ...
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Can rootkits hide their internet usage from resource-manager and third party software in windows 10? If so, how?

Lets say I have the latest windows 10 version. I also have DU meter for checking my network usage I know that in windows there is a linked list of processes that many rootkits tend to remove ...
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How rootkits hide a specified process? [duplicate]

I heard that a rootkit can hide itself and specified files, processes, and network links. I know it can set a file to be hidden, but how does it hide a process? Such as, there is a httpd process ...
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3 votes
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When to use which rootkit?

According to my understanding so far: a kernel-space rootkits runs in ring0 and use techniques such as syscalls a user-space rootkits runs in ring3 and uses techniques such as library injections ...
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Can a rootkit hide its data in slack space of pages in memory instead of disk?

So I'm asking about Linux or Windows type of rootkit/malware is this possible? can a rootkit use the slack space in the pages of the memory instead of disk to hide data? if so, has this ever been ...
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Can a rootkit write to a virtual memory of a kernel process and rewrite a instruction to jump into his own malicious code inside that process?

So lets say we have a rootkit on our system can this rootkit write something inside a kernel process? for example in windows, can a rootkit write to ntoskrnl process, changing some functions and ...
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How to spot malwares that hide their disk usage from Resource monitor?

So lets say a malware has hid itself from task manager, so it wont show up in there. lets also say that it also hides its disk usage from resource monitor as well. (based on previously asked ...
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Does secure boot protects against firmware rootkits and GPT bootkits?

This question is related but only partialy answers my question. I know firmware (most notably UEFI firmware) rootkits or bootkits are rare and possiblity to introduce one into system is very low, but ...
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3 votes
1 answer
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What tools and techniques do we have at disposal to manually search for rootkits?

I use tools from sysinternals for various tasks (ex. process monitor), but I'm not sure if these programs can be used to manual rootkit detection since rootkit processes can be hiden. Are there any ...
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Discrepancies between rkhunter itemized report and summary

I am new to rkhunter, which I have been using on Lubuntu 18.04. While it is running, it indicates an itemized scan of rootkits in two waves. First, it states: Performing check of known rootkit files ...
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2 votes
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Weird Python script found on a Mac Os X client machine [closed]

I was reviewing a Mac Os X machine (a late 2016 MacBook Pro) and I found some weird scripts in the LaunchAgent folder. 8 -rw-r--r-- 1 XX wheel 500 30 Lug 07:18 com.1e1zq.plist 8 -rw-r--r-- 1 XX ...
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Is it possible for the firmware of an SSD be infected by malware/malicious rootkits via the internet?

I am asking this because based on Snowden's relevations, bad actors "interdict" (intercept) shipments of routers, HDDs, SSDs, servers, etc., install malicious rootkits and spyware in the firmware and ...
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3 votes
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Remove malicious rootkits and spyware from HDDs and SSDs

I have read at least twenty articles dating from the time Edward Snowden's startling revelations about rogue nations and bad actors embedding malicious rootkits and spyware in the firmware of hard ...
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2 votes
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My server is compromised through apache - help! [duplicate]

As mentioned previously, I cannot physically remove the server from the internet as I do not have physical access. So, very little information in the ticket marked duplicate is relevant. I am going ...
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Unexplained DNS connections on boot

I was on an Ubuntu VPS today, with a bind9 DNS server (without DNSSEC configured) installed and running. Immediately after booting the machine I ran: netstat -tanp And received this output: Proto ...
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How to remove MBR Rootkits/bootkits?

How do I remove them from internal hard drives and USB sticks? Can they infect MicroSD cards as well or anything else? DVD? cd? Heard it's possible to do with a live CD via formatting. What are best ...
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1 answer
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Somebody called a number from a pop-up on their MacOS computer and installed a program called GoToAssist. What is the best course of action now? [duplicate]

Somebody I know saw a pop-up on their iMac running Sierra (10.13.5) that advised them to call 877-336-5833. They called the number and the representative advised that they install a program called "...
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Detect and remove rootkit from Debian 8.5 (x64)

My Debian 8.5 (x64) server is infected with a rootkit, which I have detected by using a live CD to display the contents of /tmp and /var/tmp. I found out about the infection by seeing high CPU loads ...
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2 votes
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Does Windows protect MBR from being overwritten?

I have read article about TDL/Alureon Rootkit: According to research published on Monday by GFI Software, the latest TDL4 installation penetrates 64-bit versions of Windows by bypassing the OS’s ...
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5 votes
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How can a rootkit infect Windows without signed driver file?

Windows 7 64 bit and newer versions feature Driver Signature Enforcement, which prevents loading an unsigned driver. Then how can some kernel-mode rootkits infect Windows? I rea Lets say, some user ...
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What should I do if C:\Windows\System32\svchost.exe got infected? [duplicate]

The original svchost.exe file in my Windows XP was changed with a malicious copy, I think this is easy to do on Windows XP. How am I supposed to return it to the clean original without crashing the ...
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2 votes
1 answer
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Access encrypted system/files with rootkit

I have encrypted files that I need access to but I believe the BIOS/UFEI/hardware or recovery partition have a rootkit or keylogger now in order to get my encryption password for the encrypted system ...
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1 answer
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Examples of non signature based anti-malware/anti-virus programs, IDS, & system integrity scanners

All traditional anti-virus software uses signatures to detect known malware after it has been discovered by the software companies and added to the definitions. Heuristic definitions allow a piece ...
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1 answer
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What exactly is the meaning of 'trojan' and 'rootkit'? [duplicate]

I know both are a type of malware, trojans 'disguise them self as a useful program' and rootkits 'embed them self in the system to avoid detection'. Technically how do they accomplish such things? I'm ...
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1 vote
1 answer
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SSD Wipe to remove known & unknown malware [duplicate]

Does anyone know of a method to wipe a HDD that gives a high degree of confidence that any malware present will not persist when the OS is reinstalled? Using tools on Linux and/or Windows? We have ...
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4 answers
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How To give someone a shell in my local net without security risks?

I have a server A in my local network in my house. I want to allow someone to come to that server using a reverse ssh connection from my server to his server from which he can get to my server. I don'...
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2 votes
1 answer
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How to load a malicious LKM at startup?

How could a cracker force the loading of a kernel rootkit at boot? Is there a way to link the malicious module with another module so that it is loaded automatically without any insmod command?
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