Exam SY0-601 topic 1 question 157 discussion

Logic Bomb and Backdoor First compromise relies on a cronjob that will be executed each five minutes Second compromise is opening port 31337 , https://www.eicar.org/download/eicar.com.txt is a file to test AV products, instead of using real malware, which could cause real damage, this test file allows people to test anti-virus software without having to use a real computer virus

To make it easy for you guys: if = logic bomb (since logic bomb execute once a condition is met) nc = rat

A condition is being used to execute a certain command -----> Logic bomb Setting up the listener to establish a reverse-shell connection is more aligned with a ---> backdoor than RATs. Compared to backdoor malware, RATs encompass more advanced features such as keystroke logging, screen capture, webcam access, and file system manipulation. RATs provide a broader sense of surveillance beyond simple command execution.

First has 2 answers: Logic Bomb and SQLi Second has 2 answers: RAT and Backdoor

logic bomb backdoor (download file for RAT)

The first one makes sense is a logic bomb based on the conditions. I’m more willing to believe back door over or a RAT. Remote access Trojan usually has two files involved. Client being the remote control Server being the Trojan This method requires a target PC to run the server/Trojan which opens a specified port for the client to connect through. The client requires the IP number and port number to connect to the Trojan. The client (gui remote control) is what sends commands to the server (Trojan), the trojan receives requested commands and executes. A backdoor on the other hand can be done as easy as a script that opens a port to where you can directly access said PC. Both methods are similar, but specific differences between the two.

I initially thought the second one was rat. I saw someone mentioning that the second isn't really a trojan because it's not a program masquerading as something else that is installed without knowing of the malicious intent. I'm not certain but I think the second is backdoor.

1. is Logic Bomb 2. is a backdoor (Because the script did not take control of the remote computer but rather initiated a download only. Probably in preparation for RAT execution)

from chatgpt: In the command output, we can see the use of the nc command with the options -1 -p 31337 -e /bin/bash. This command opens a connection to a remote server (www.eicar.org), downloads a file (eicar.com.txt), and executes it using the /bin/bash shell. This behavior is typical of a RAT, where an attacker gains unauthorized remote access to a target system and can execute commands or perform malicious activities. The RAT allows the attacker to control the infected system remotely, potentially leading to unauthorized access, data theft, or further exploitation.

Logic Bomb and Backdoor The first one is Logic Bomb because of if conditions. The second one is Backdoor because at the end it says virus downloaded. RAT is a trojan and there is a difference between a virus and a trojan. And backdoor is created with Viruses or rootkits. So the virus is mentioned here it means its should be a backdoor.

MorganB 0 minutes ago Awaiting moderator approval Pass my exam 27, April 23. This question was on my test and the answer I picked was Logic Bomb and Backdoor.

it was on the test

This appears to be a Logic Bomb, which is a type of cyber attack that involves planting malicious code in a program or script that lies dormant until triggered by a specific event or condition. In this case, the condition is the absence of a user named "john" in the /etc/password file. Once the condition is met, the logic bomb executes and drops the "production" database. The code is scheduled to run every hour through the crontab, making it a recurring threat. The given script seems to be a backdoor as it creates a listening port on the system which allows remote access to the shell through netcat. The downloaded virus file might contain malicious code that can be executed on the system.

google.com/search?q=nc+-l+-p+313337+-e+%2Fbin%2Fbash%2F&oq=nc+-l+-p+313337+-e+%2Fbin%2Fbash%2F&aqs=chrome..69i57.47060j0j15&sourceid=chrome&ie=UTF-8 you might find the link helpful

please explainme which ones are correct confused reading all these comments !

I looked around the internet and found that 31337 port is associated with trojans and BackOrifice (which is a backdoor hack tool). logic bomb + backdoor are my options.

Logic Bomb and Rat