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
16 April, 2021
Also known as
Recam
Global rank
18
Week rank
23
Month rank
27
IOCs
3915

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
79.134.225.73
31.220.4.216
3.131.207.170
79.134.225.17
178.82.232.23
193.161.193.99
3.17.7.232
3.14.182.203
103.151.123.132
185.19.85.165
79.134.225.119
192.169.69.25
79.134.225.102
103.133.109.176
193.187.90.38
79.134.225.61
79.134.225.10
79.134.225.21
79.134.225.100
192.169.69.26
Hashes
c9b8ec8ccbe3b0ab195d0c472e3f8d6b6a00dc66eb8ab0bff71eb44ad4abd39d
244d66930c90fd8dac151bf41ba2dc74046f7c34cf543a7c3f1f1f5280ab8d61
c657a69c6832a40ff81651b72dde98ebd3dd5cece06ee57afe835370a2d51a3a
6889913d75403fbd73760adb60b59ad8b797e9d6bc92a4cd56cc408687164a2a
8134262ab304b37a29171eecdcb31da91040fc713d1553a1042045195c5f321a
eef5205cce36d1613036ce4ece3875e907473b75fdc09711c6545757547ea08a
c92d02053bbc026efd20c516d24e0ee8b43bc4106345eef365b212b320746b99
4cbd0b1a1f9ae0ceea57df4f35037077539cce88e44f41eda079505b1fe7d119
f8dca387469b2738777335c7e1a2da3e95bf7989e6eace00a6bb8adaa3c5db6b
11d69fb388ff59e5ba6ca217ca04ecde6a38fa8fb306aa5f1b72e22bb7c3a25a
e3edba9f4ae246a43360369856788767104a0ecd46cc016c71ca2bbdf515b523
2a096184b1463b0ddfa4503ae53699d6055f495778386efd7f8e2d902a3b3dfc
2e7b17a65cb05e7dbf74216528a2a314a0be42caeb784d1d475cc25fd3c36ed9
830f73cf5e1d5b9fe22cb2c9053cd40f3f71b96fbe72ff1d087b4924a73bb84b
ce46763b5ddcf44b645e4cfada58b6f7c583b0a6972d53d7e38859943726f771
c4b73299f51cc04c30ee6080144f960c8d5de3d62c0e0b10c6c497f57b844474
fb07664d01b3b30662887c2a6dab5650a35d708f718430dc4bda2163672d291d
ee105aefe05012972398fb6eed4c5b408b1c7c81072a5b97e99cd4072c4f853f
c2339cb1d8bea695fd227b54ecca6b4c9927e176f0cbca58779f194afbe2bb1a
0f33970e6e7fc3aeec44f3ada8c4fc33cd064f55b7c76605c39282e62954b717
Domains
timborowski.ddns.net
albert109045555.hopto.org
godwin.ddns.net
smart0147.ddns.net
bliss123.ddns.net
bmz.duckdns.org
abigguy.ddns.net
britianica.uk.com
accer.sytes.net
cashoutmoney.ddns.net
pm2bitcoin.com
booking.msg.bluhotels.com
booking.msg.bluhotels.com
news.coris-bank.fr
goryhazel1.duckdns.org
majul.com
2.tcp.ngrok.io
3.tcp.ngrok.io
vilvaraj-32652.portmap.io
PartyBit-49075.portmap.host

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