Over the past few weeks, some of our users have reported having to scan them for residual malware.
Recommended: ASR Pro
If you have a vulnerable Intel feed that contains known malware paths or just keys, this may indicate that something has worked before. Unallocated Memory: If the process stopped but the computer probably didn’t restart, your needs can find its remnants in all unused pages of memory.
In this section, we’ll look at how residual malware is detected after an incident has been investigated. Basics
A step in any DFIR triage scenario is to determine if the malware is low-level or advanced. In the last two articles of my best “Introduction to IR” series, we looked at how to determine what malware looks and works.
Now we will focus on finding leftovers related to responding to incidents with malware after everything stopped working. We end the article with what I would say a brief introduction to using the Cyber Triage incident response tool to analyze malware-related data.
30 Second Refresh
Before we delve into the details of this article, let’s review the core standards in this “Introduction to IR” article series.
This article series looks at each of them, provides a framework for further study, and then provides specific methods. Digital investigations are all about answering questions, and we’ve broken down the common sorting question “Is this device compromised?” big (always big) questions:
And today, for each race, the three questions will be broken down into smaller questions.The process is repeated until your company answers questions that can often be answered with authorized data.
Now let’s move on to post #8 in this series and look at #2 and malware.
In Article 6, we split our question “Does this computer have malware?” to three small positive questions:
In other words, it will help us see what programs are being configured, what programs are running, and any known traces we can find.
We’ve already covered saving/running and executing malware. Now we are looking for the history of past executions.
Why Do We Look For Residual Malware When We Investigate Incidents?
How do you detect malicious malware?
System performance is degraded.New folders and files of this type in the system.Unknown processes running on ticker in task manager.Look for suspicious ports.Check for suspicious entries in the registry.The New Deal for Startups.
We have already covered many ways toIt’s malware detection, isn’t it? So why do we need more?
When sorting endpoints, it’s a good idea to search in as many places as possible so you can find multiple results very quickly before going too deep into a specific area.
What Malware Incident Response Teams Need To Know
We can’t ask the question “Are there traces of previous runs of known malware?”. We have not defined the word what is the remainder.
Let’s look at the lifecycle of a subroutine (see this article for process requirements):
As a first step towards leftover cravings, let’s look at each of these steps.
When running the method, Windows may create various registry keys when Logging event records (depending on setting). With the exception of registration processes, most of the data is collected to allow Windows to preload libraries and not waste time in the future.
We covered this topic in a historical article on programs that users typically view. We won’t go into details, but you should check out the user behavior research article if owners haven’t already read it.
Handling leftovers while working
But there are a few things the experts can focus on when we look for remains: