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
31 March, 2020
Also known as
Recam
Global rank
16
Week rank
11
Month rank
12
IOCs
1576

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
185.244.30.160
91.209.70.207
192.169.69.25
79.134.225.35
185.244.30.86
91.189.180.209
193.161.193.99
185.70.185.202
185.244.30.131
79.124.8.7
185.244.30.124
45.125.239.50
91.218.65.24
77.245.76.115
185.165.153.8
185.84.181.102
185.163.47.213
185.244.30.214
91.193.75.244
185.163.47.168
Hashes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malu1234.duckdns.org
globeexpos.com
www.iderparts.com
www.lovekelowna.com
www.fourprofit.com
www.techyuva.com
www.bazmeadab.com
www.slashoff.com
lovejolie.com
www.datakross.com
www.yashodankalpataru.com
www.ajoalheria.com
www.chieftory.com
albalinda.com
www.bestofday.com
www.barbudastrong.com
www.softamis.com
www.rodrubjangthai.com
employeescripts.com
www.tusbeneficios.com

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