Netwire

Netwire is an advanced RAT — it is a malware that takes control of infected PCs and allows its operators to perform a variety of actions. Unlike many RATs, this one can target every major operating system, including Windows, Linux and MacOS.

Type
Trojan
Origin
ex-USSR territory
First seen
1 January, 2012
Last seen
19 January, 2021
Also known as
Recam
Global rank
18
Week rank
23
Month rank
27
IOCs
3730

What is Netwire RAT?

Netwire is a remote access trojan type malware. A RAT is a malware used to control an infected machine remotely. This particular RAT can perform over 100 malicious actions on infect machines and can attack multiple systems including Windows, Apple’s MacOS, and Linux.

Netwire malware is available for purchase on the darknet in the underground hacking communities where attackers can buy this RAT for the price of 40 to 140 USD. In addition, Netwire can be purchased on the surface internet for a price of 180 USD. Notably, in 2016 Netwire received an update that added the functionality to steal data from devices connected to the infected machine, such as USB credit card readers, allowing Netwire to perform POS attacks.

General description of Netwire RAT

Netwire Trojan core functionality allows this malware to take remote control of infected PCs, record keyboard strokes and mouse behavior as well as take screenshots, check system information and create fake HTTP proxies.

The keylogger functionally allows Netwire to record a variety of personal data that is imputed on a computer connected to the internet or to a corporate network. Combined with the ability to steal credit card information and operate undetected for extended periods of time, Netwire RAT is truly capable of inflicting serious dangers to organizations.

In some malicious campaigns, Netwire trojan was used to target healthcare and banking businesses. The malware was also documented being used by a group of scammers from Africa who utilized Netwire to take remote control of infected machines.

Netwire RAT creators have put in a lot of work into ensuring that researchers have a hard time analyzing this malware, as a lot of precautions are taken to complicate the research process, including techniques like multiple data encryption layers and string obfuscation. In addition, the malware uses a custom C2 binary protocol that is also encrypted, and so is the relevant data before transmission.

During one campaign researchers have observed Netwire being distributed as “TeamViewer 10” – named so in an effort to trick victims into thinking that they have downloaded the legitimate remote assistance software. Once the execution process began, this version would drop an .EXE file and proceed to start establishing persistence right away. The malware created a Windows shortcut in the Startup menu, to make sure that Netwire trojan would always run when the user would log into the system. Interestingly, another trick designed to keep the malware hidden actually gave it away during this particular campaign. The malware would inject it’s code into the Notepad.exe, unveiling its presence since it’s not normal for the notepad to have an always active network connection. Only after decoding the data prepared for transmission to the C2, the sensitive nature of the stolen information was discovered. Unfortunately, researches did not reveal what the organization was targeted in this particular attack.

Netwire RAT malware analysis

A video simulation recorded on ANY.RUN enables researchers to study the lifecycle of the Netwire in a lot of detail.

process graph of the netwire execution Figure 1: Process graph generated by ANY.RUN allows to visualize the life cycle of Netwire

a text report of a netwire analysis Figure 2: A text report generated by ANY.RUN is a great tool to share the research results

Netwire RAT execution process

As far as malware execution goes, Netwire isn't as exciting as some other malicious programs can be. It makes its way into the device mostly in the form of a payload.

The user receives a spam email with an attached Microsoft Word file. After the user downloads and opens this file, the executable is being dropped or downloaded onto the machine. After that, the executable start performing the main malicious activity such as writing itself in autorun, connecting to C2 servers and stealing information from an infected device. Netwire also has the ability to inject into unsuspicious processes from which it can perform malicious activities.

Distribution of Netwire RAT

Netwire RAT is usually being distributed in email phishing campaigns in the form of a malicious Microsoft Office document. The victim must enable macros in order for the RAT to enter an active state. The macros then proceed to download Netwire, allowing the malware to start the execution process.

How to export Netwire data using ANY.RUN?

If analysts want to do additional work with events from tasks or just want to share them with colleagues they can export to different formats. Just click on the "Export" button and choose the most suitable format in the drop-down menu.

Export options for netwire malware Figure 3: Export options for netwire malware

Conclusion

Diverse information stealing feature set combined with the ability to target multiple operating systems and steal data from credit cards which are being used in an infected system make Netwire Trojan a highly dangerous remote access trojan.

Despite its impressive functionality, the malware is fairly accessible, “retailing” on underground forums for as little as 40 dollars in some select cases. The situation is further worsened by the fact that creators of Netwire RAT have implemented several features designed to complicate the analysis as much as possible.

However, researchers can take advantage of interactive malware hunting services, such as ANY.RUN, that allow to influence the simulation at any point and get much purer research results.

IOCs

IP addresses
185.140.53.234
193.239.147.44
216.38.7.225
193.161.193.99
185.140.53.129
3.14.182.203
3.17.7.232
150.242.14.61
194.5.97.99
103.224.241.225
185.244.30.51
86.106.121.19
79.134.225.100
185.140.53.183
185.140.53.220
218.52.79.156
185.19.85.181
92.222.72.160
79.134.225.116
79.134.225.99
Hashes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mike101.duckdns.org
goodluckfile.ddns.net
majul.com
isns.net
www.weal-chance.com
0120.dyndns.org
graceland777.ddns.net
uzbektourism8739.ddns.net
xacnsnva.bounceme.net
emmychris.hopto.org
66d5a675.ngrok.io
elx01.knas.systems
iphanyi.mywire.org
johannesembregts.ddns.net
info1.dynamic-dns.net
qxq.ddns.net
frostyfoodco.duckdns.org
glorylnter.hopto.org
booking.msg.bluhotels.com
booking.msg.bluhotels.com

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