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
18 June, 2021
Also known as
Recam
Global rank
18
Week rank
23
Month rank
27
IOCs
4105

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
193.161.193.99
3.22.30.40
3.134.125.175
3.14.182.203
18.189.106.45
3.17.7.232
79.134.225.116
3.131.207.170
79.134.225.90
79.134.225.119
192.169.69.26
192.169.69.25
23.105.131.243
192.71.166.25
79.134.225.92
79.134.225.17
79.134.225.7
79.134.225.89
136.144.41.26
3.142.81.166
Hashes
2fd4e8077355537ab184f5e9f8969620224cf8df85aa14119d7f7f97d5f95ccf
fd413ec8d9d798c28fc99c0633e6477f6eabc218788ad37c93be4de758a02962
79712cd9030282fbf73a6a8a0ada993f2b0f682d75a255cebf5a344896652306
e7a98f2a24a517532dfd29f15bba52c4216da9eee8b848f6c50bab2a4f00cdf4
e0e0ca8ec324752ed823c7e503992398e817663828f94b4ca699ff1965095c31
1cccb371500ad56d62318c85287e0f33ce349cc8c2863850012e5faaeed931b7
e3b59ad472a4da79d33cd1b994394f9d405befb76ba377d1763010ecfb4c2591
31e476f0870fc617229cf4eea87a1595283eccb022a27ab5be175807ed761c35
6fd358dc3877d50fbaa42283b91ee1ab39d1f8d5a9cc951e9d0fd86497460104
0fda1a21ab1ba27664e58228ab32452ed711d4ae1713deadbe20aac8cf193041
fba70c8c189b22607f3ded689e050d1567f3195d65f03c5e81d9ccc0877e5c8d
7d4c0a6edbc4e7bad59b578c8075db9c8e26d81942f3222c57e25c796aa4bc33
636f614a8b6f5c854480eeac7292edd58579fe798478da3ed654ef527e640237
ea814614ec41e786be1422aa3506caa9c3324d6ec864f15d90fc78a7075f286d
d4180d6962c42999679092f1dbea84a78d255dde3508e037816b4afde56d49e7
6238f606f5fd0fc1689731a503c42645ef7f383860071a4c70ad88d2c965102c
c6e5443e16d9fa94dfea5bd8964d5e3e44312f24a7fed868b2fc6033b2112bbe
3952d20010784df9f80ca5f283a2784a23e301b64c76e8a05225a7421d905fbc
1aa7d80336821e86d39b12d3787619f82096e3e4e0004d82187067d92ac105cf
54c7d014bb356bd5593fa849e1648378bbeab338b70bfed0508723d23a6805b0
Domains
vilvaraj-32652.portmap.io
PartyBit-49075.portmap.host
bigshazza-20890.portmap.io
ziperd-48946.portmap.io
kubar-44613.portmap.io
zoroark-51867.portmap.host
DarlingSH-37506.portmap.host
jorankh-31689.portmap.host
jorankh-34614.portmap.host
toxete5095-30806.portmap.io
eclipseelisa7-25341.portmap.io
Mattrevwizard-43846.portmap.host
Kupcia-53901.portmap.io
Amazonsupport-58169.portmap.host
dovydas560-41641.portmap.io
ratergod-43995.portmap.host
167e-35300.portmap.io
mcnova10-32892.portmap.host
TonyChocolony-31151.portmap.host
tester894-49756.portmap.host

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