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IOCs

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.

Trojan
Type
Middle East
Origin
1 January, 2013
First seen
14 July, 2024
Last seen
Also known as
Bladabindi
Njw0rm

How to analyze njRAT with ANY.RUN

Type
Middle East
Origin
1 January, 2013
First seen
14 July, 2024
Last seen

IOCs

IP addresses
109.206.242.119
93.170.46.31
178.80.111.72
90.207.167.210
162.220.10.165
104.22.48.74
95.83.0.34
185.139.70.178
98.4.100.172
188.116.145.233
156.222.52.118
83.59.239.179
41.142.42.121
194.71.227.62
172.67.135.130
185.199.109.133
144.126.144.223
192.121.87.108
193.42.33.179
5.35.153.131
Hashes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msvenom.ddns.net
unit-latinas.gl.at.ply.gg
sniperexe.zapto.org
nj2121.duckdns.org
mayocap12ok.duckdns.org
nzul13-3-23.duckdns.org
them-recommended.gl.at.ply.gg
documents-elegant.at.ply.gg
provided-existence.gl.at.ply.gg
press-higher.gl.at.ply.gg
five-sequences.gl.at.ply.gg
jvjv2044duck33.duckdns.org
politics-installing.gl.at.ply.gg
asdaryder.duckdns.org
verde2021.duckdns.org
enero2022async.duckdns.org
windwosupdata.ddns.net
century-missed.gl.at.ply.gg
supply-deputy.at.ply.gg
legal-nextel.gl.at.ply.gg
URLs
https://pastebin.com/raw/Xde8ekvN
https://pt.textbin.net/download/insdj4bhn2
https://pastes.io/download/g4enqwgps4
https://pastebin.com/raw/Hu1K7Y4W
https://pastebin.com/raw/VGGi28kN
https://pastebin.com/raw/jxx7yjgK
https://6ded-177-50-200-148.ngrok-free.app/
https://pastebin.com/raw/vZM3LPTw
https://pt.textbin.net/download/rcd5ihynxw
https://pastebin.com/raw/UgsiXFgH
https://pastebin.com/raw/YKgY3s0H
https://pastebin.com/raw/rdmzbeYW
https://pastebin.com/raw/fnugwhmF
https://pastebin.com/raw/CmJ80yPc
https://pastebin.com/raw/MiKBEm2x
https://pastebin.com/raw/LPn410Wj
https://pastebin.com/raw/GUZjvbiL
https://pastebin.com/raw/q6JvsRJz
https://pastebin.com/raw/S1HhZSCU
https://pastebin.com/raw/0mKM5dgn
Last Seen at

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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.

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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.

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