njRAT

njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world.

Type
Trojan
Origin
Middle East
First seen
1 January, 2013
Last seen
26 January, 2023
Also known as
Bladabindi
Njw0rm
Global rank
2
Week rank
9
Month rank
6
IOCs
33062

What is njRAT Malware?

njRAT, also called Bladabindi and Njw0rm is a remote access trojan that is used to remotely control infected machines. Because of its availability, excess of online tutorials, plenty of information, and a robust core feature set along with several implemented evading techniques made njRAT one of the most widely used RATs in the world.

This malware was detected for the first time in 2013, however, some related RATs have been observed by researchers in 2012. The highest surge of njRAT trojan attacks was recorded in 2014 in the middle east, which is the most targeted region for this malware.

General Information about njRAT

njRAT trojan is built on the .NET framework. This RAT gives hackers the ability to control the victim’s PC remotely. njRAT allows attackers to activate the webcam, log keystrokes, and steal passwords from web browsers as well as multiple desktop apps.

In addition, the malware gives hackers access to the command line on the infected machine. It allows to kill processes as well as remotely execute and manipulate files. On top of that, njRAT is capable of manipulating the system registry. When infected, Bladabindi trojan will collect several bits of information about the PC that it got into, including the name of the computer, operating system number, country of the computer, usernames, and OS version.

Also, this malware is able to target cryptocurrency wallet applications and steal cryptocurrency from PCs. For example, it is known to be able to grab bitcoins and even access credit card information which sometimes can be stored in crypto apps as a means to purchase cryptocurrency.

After infecting a computer the malware uses a variable name and copies into %TEMP%, %APPDATA%, %USERPROFILE%,%ALLUSERSPROFILE% or %windir% – a behavior not uncommon for this time of malware. It can also copy itself into <any string>.exe, to ensure that it will be activated every time the victim switches on their computer.

njRAT trojan has a few tricks up its sleeve to avoid detection by antivirus software. For example, it uses multiple .NET obfuscators to obstruct its code. Another technique that the malware uses is disguising itself into a critical process. This does not allow the user to shut it down. It also makes njRAT hard to remove from the infected PCs. Bladabindi RAT can also deactivate processes that belong to antivirus software, allowing it to stay hidden. njRAT also knows how to detect if it has been run on a virtual machine which helps the attackers to set up countermeasures against researchers.

Authors of Bladabindi are leveraging Pastebin to avoid investigation by cybersecurity researchers. njRAT downloads additional components and executes secondary-stage payloads from Pastebin. So, the malware has no need to establish a traditional command-and-control (C2) server. The Pastebin creates a pathway between njRAT infections and new payloads. With the trojan acting as a downloader, it will grab encoded data dumped on Pastebin, decode, and deploy.

For spreading, njRAT can detect external hard drives connected via USB. Once such a device is detected, the RAT will copy itself onto the connected drive and create a shortcut.

Who created njRAT?

Creators of njRAT are members of an underground hacker community named Sparclyheason. Evidently, they have created a very popular and destructive malware. njRAT was classified as “severe” by Microsoft Malware Protection Center.

In fact, following a large malicious campaign in 2014, Microsoft shut down four million websites in an effort to filter traffic that was going through no-ip.com domains.

njRAT malware analysis

ANY.RUN allows researchers to watch the njRAT in action in an interactive sandbox simulation.

njRAT execution process graph

Figure 1: Displays the lifecycle of njRAT in a visual form as a process graph generated by ANY.RUN malware hunting service

text report of the njRAT malware analysis

Figure 2: A customizable text report generated by ANY.RUN allows to take an even deeper look at the malware and helps to share the research results

njRAT execution process

In our simulation, after njRAT got into the target device and began execution it instantly started its malicious activity. Usually, the initial file renames itself and creates a child process. Sometimes njRAT trojan injects its code into legitimate processes such as RegSvcs.exe and RegAsm.exe.

The malware also has the ability to run itself through Task Scheduler. This child process executes the main malicious activity. Such activity includes stealing information, connecting to C2 servers, and changing the autorun value in the registry to run itself when the operating system starts.

Distribution of njRAT

njRAT trojan uses quite a few attack vectors to infect its victims. For example, the malware is known to target Discord users as part of spam campaigns. In addition, leverage cracks and keygens in well-known software in order to trick users. It installs malicious packages to infect the machine.

Another known distribution method was through a compromised website that tricked users into downloading a fake Adobe product update which in turn installed njRAT malware to the PC. Bladabindi was also featured in spam email campaigns. In this case, it was delivered to potential victims as a malicious attachment.

In October 2020 mailspam used the 'shipment tracking' theme, faking popular courier and postal services. Malicious packages contain attachments in Zip format with an encoded Visual Basic script (VBE) payload and components.

Moreover, crooks use cloud-based storage platforms more often. Attackers host malicious files there to deliver malicious software, and even use them as part of a command and control (C&C) architecture. That is why it's crucial to know general malware removal instructions and analyze viruses in a safe environment.

How to detect NJRAT using ANY.RUN?

To determine whether the sample under review is njRAT or not, you can take a look at the changes that it made in the registry. To do so, open the "Advanced details of process" of the malicious process and look at the "Registry changes" tab in the "Events" section. If a process has created a key with the name [kl] into the path HKEY_CURRENT_USER\Software\32_characters_and_digits, you can be sure that the given sample is njRAT.

njrat registry changes Figure 3: Сhanges made by njRAT in registry

Conclusion

The relative ease of operation, multiple tutorials on how to set up this malware, and very extensive information stealing feature set have made this RAT one of the most popular remote access trojans in the world.

Even though the peak of its activity was recorded in 2014 and targeted mostly the middle east and India, the njRAT trojan remains to be extremely popular today. This malware is known to have targeted both private and corporate victims and poses a lot of danger to internet users, especially considering that it can be delivered by packages to potential victims in several ways, and preventing infection is much harder in some cases than in others.

Even though Bladabindi malware creators have taken several steps to hinder the analysis, malware hunting services like ANY.RUN allows professionals to easily study njRAT malware samples or other RATs like Orcus RAT or WSHRAT and share the research results with the world to improve global cybersecurity.

IOCs

IP addresses
5.165.86.74
41.103.11.65
94.237.28.110
79.134.225.95
192.121.87.11
194.5.98.48
93.112.144.134
83.59.236.231
51.68.160.90
194.5.98.188
141.98.252.161
194.5.97.4
37.120.141.158
149.154.154.61
85.15.96.128
41.140.81.162
194.40.243.240
92.55.19.153
23.237.25.193
1.227.26.43
Hashes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vcctggqm3t.dattolocal.net
scambaiting2022.ddns.net
booking.msg.bluhotels.com
booking.msg.bluhotels.com
aneurinbarnard.duckdns.org
mkt.denodo.com
data.pendo.io
sousou.linkpc.net
searchkn1.sima-land.ru
2.tcp.eu.ngrok.io
c16d-35-240-187-111.ngrok.io
isns.net
static.leadpages.net
todspm3.duckdns.org
frederikkempe.com
majul.com
allgraphicart.com
www.googledocpage.com
tracking.reactful.com
visitor.reactful.com

HAVE A LOOK AT

Adwind screenshot
Adwind
adwind trojan
Adwind RAT, sometimes also called Unrecom, Sockrat, Frutas, jRat, and JSocket, is a Malware As A Service Remote Access Trojan that attackers can use to collect information from infected machines. It was one of the most popular RATs in the market in 2015.
Read More
Agent Tesla screenshot
Agent Tesla
agenttesla trojan rat stealer
Agent Tesla is spyware that collects information about the actions of its victims by recording keystrokes and user interactions. It is falsely marketed as a legitimate software on the dedicated website where this malware is sold.
Read More
AsyncRAT screenshot
AsyncRAT
asyncrat
AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions.
Read More
Ave Maria screenshot
Ave Maria
avemaria stealer trojan rat
Ave Maria malware is a Remote Access Trojan that is also called WARZONE RAT. Hackers use it to control the PCs of their victims remotely and steal information from infected PCs. For example, they can remotely activate the camera to take pictures of a victim and send them to a control server.
Read More
Azorult screenshot
Azorult
azorult trojan rat
AZORult can steal banking information, including passwords and credit card details, as well as cryptocurrency. This constantly updated information stealer malware should not be taken lightly, as it continues to be an active threat.
Read More
Cobalt Strike screenshot
Cobalt Strike
cobaltstrike
Cobalt Strike is a legitimate penetration software toolkit developed by Forta. But its cracked versions are widely adopted by bad actors, who use it as a C2 system of choice for targeted attacks.
Read More

Our website uses cookies. By visiting the pages of the site, you agree to our Privacy Policy