Azorult

AZORult can steal banking information including passwords and credit card details as well as cryptocurrency. This constantly updated information stealer malware should not be taken lightly, as it continues to be an active threat.

Type
Stealer
Origin
ex-USSR
First seen
1 January, 2016
Last seen
31 March, 2020
Also known as
PuffStealer
Rultazo
Global rank
9
Week rank
12
Month rank
10
IOCs
8083

What is AZORult malware?

AZORult is an information stealer malware that is targeted at stealing credentials and accounts. Updated multiple times over the years, AZORult continues to be an active concern for the users, stealing information such as banking passwords, credit card details, browser histories, and even cryptocurrency.

AZORult stealer was discovered, analyzed and documented for the first time on July 26, 2016, by Proofpoint researchers. At the time, the virus was distributed together with another trojan called Chthonic. However, subsequent spam email campaigns started distributing AZORult as the main payload while Hermes and Aurora ransomware were added as additional payloads. A new strain of the stealer Trojan was documented In July 2018. The analysis revealed that it brought several upgrades the functionality of both the stealer as well as to the loader of the virus, additionally, allowing to distribute AZORult with the RIG exploit kit. The latest recorded version of the malware is v3.3, this strain was first documented in October 2018. Most notably, this strain updated a way of encrypting the C&C domain string and improved crypto-stealing functionality.

General description of AZORult

A trojan type malware that originated in one of the ex-USSR countries, AZORult searches for useful information on the affected computer and sends it to the C2 server to potentially steal the victim’s bank account data. AZORult can steal cookies, browser autofill information, desktop files, chat history and more.

Interestingly, to get into a machine the virus in some cases requires secondary malware like HawkEye or Seamless. Notably, In campaigns with Hermes and Aurora, after every bit of useful data is obtained user files are encrypted and a ransom is requested to restore the lost data.

One of the interesting features of AZORult is that after execution the malware is removed from the system due to the lack of a persistence mechanism.

Malware analysis of AZORult

ANY.RUN displays the execution process of AZORult in an interactive virtual environment. As shown by the sandbox simulation, the virus launches the following process during its execution:

  • Firstly, a Microsoft Office file opened and WINWORD.EXE with enable macros is executed;
  • The malware runs EQNEDT32.EXE and downloads a malicious executable through the exploitation of the CVE-2017-11882 Microsoft Office Equation Editor vulnerability;
  • A 3.exe file is then launched which changes the autorun value in the registry. A malicious executable file then proceeds to make changes in the registry so that the system runs it at the system start;
  • A malicious executable file launches itself and then proceeds to steal the personal data and connect to the CnC server;
  • Then, a malicious executable file starts cmd.exe to delete itself after a 3-second timeout.

The execution process of AZORult can be viewed in more detail in the video provided by ANY.RUN

azorult execution process graph

Figure 1: Illustrates the life cycle of malware. Graph generated by ANY.RUN

How to avoid infection by AZORult?

AZORult is distributed mainly using spam email campaigns or via the RIG exploit kit. Notably, a major AZORult distribution campaign was observed on July 18, 2018, targeting North America.

Spam emails that were sent by the attackers carried largely employment-related subjects and included an infected and password protected resume file, that triggered the download of the virus.

AZORult execution process

Below is an illustration of the execution process created by the ANY.RUN interactive malware hunting service.

azorult execution process tree

Figure 2. AZORult execution process in ANY.RUN

text report of the azorult malware analysis

Figure 3: A text report generated by ANY.RUN

AZORult stealer uses a clever technique to trick various antivirus engines. Particularly, version of the stealer Trojan distributed in July 2018 spam campaign was activated after unlocking a password-protected document. Since the document that was attached to the email was protected by a password, antiviruses had not been able to scan it and determine whether it was malicious or not. For the virus to become active, the victim had to unlock and enable macros for the document. In this particular campaign, the malware was distributed with two payloads embedded in the main binary. Both payloads were dropped to the disk and executed with the first executable payload being the information gatherer – AZORult itself and then the secondary ransomware.

It should be noted, that in aforecited ANY.RUN simulation AZORult uses an exploit when a Microsoft Office file is opened, allowing to embed a number of malicious OLE objects into a document and executes arbitrary code on a machine and even download any file from a remote server and execute it.

How to share your Azorult malware analysis with others?

If you want to share your analysis with others you can create a text report and send it to anyone you want to, just click the "Text report" button. You can save it using your browser functionality either by clicking "Save page as..." or "Print..." buttons. Note that you can choose that information section in your report you want to print or save into a file using the "Print..." button by clicking on the little printer icon on the left side of the sections. On the illustration below the first section with a grey colored button won't be included in the report but a section with a black colored printer button will be.

text report for azorult Figure 4: Azorult text report

Conclusion

AZORult remains to be a highly dangerous trojan. The stealer Trojan has been upgraded throughout its lifespan and currently poses even more dangerous than during the first days of its lifespan. Particularly, most recent versions are distributed in bundles with ransomware and are able to steal cryptocurrency from the victims.

Its distribution in clever email campaigns makes becoming a victim of the stealer Trojan by accident relatively easy. Interactive sandbox analysis provided by services like ANY.RUN is a great way to learn more about the threat and greatly increase cybersecurity.

IOCs

IP addresses
204.11.56.48
107.175.150.73
45.133.16.97
192.169.69.25
92.119.113.254
198.54.117.197
81.177.141.72
5.79.66.145
194.87.238.60
51.89.119.120
192.227.215.147
35.246.219.215
69.172.200.235
206.190.151.181
104.18.33.241
5.101.153.46
5.101.153.46
204.93.196.181
204.93.196.181
104.31.87.63
Hashes
8fa9eb00743b99f094b6349a27deb6f617094c01f0410361ef7eee041f8de66a
9d3536e5e2e71bad9ea977b3a5ca377746d49e9c6b914eeee15dcb1cafc8d61f
bcab8973348053e43095a7d09927411208f43bce4fb04f0d829f2b616157a535
b73019268d92907ce1ec54cdbe2c67fdf4d0418360bf5dfcbce64ec3a9777751
2c0f228d1b14721509922904ff7f9e5b89b06c60e54ead20147643b9a0d02735
c518f28c30dff3dc82484cb3af71285c4ae95a29416ea54213d6f2096cfc3b72
23cdba5b4696a707ef26c405fd969f0c887dfde9467b09d8c2192e726bc836f7
5462562daa0bb44d68681d2818094d52b0aa529f09e0d101340db38911b4a181
19b9bac5b28d7b9e24f13b19fc9598c8d9003404804ba0e40da487cbc5aa9975
0eb3954b4bd657347e8fc20db26d7956700554dbdf5cbb82d1aac01b57c770c7
60b659e94a38ca5449f476299c5ccf7cf6e2fc88d2aea4003c8a34506910b693
baf6a75e20150f7383f636a2a41241dd6f5a1fcfbfec13944ebd8e02479123ee
35a26a7cc7d31b595a3931172ed60e34e50bbdc56c848d617cb394146e09a8ef
7e694d89f42bd0d5c278eeb68bb24e9dc53643965648238a0483ea6bbaaffc55
e59fcb2edbaa74a89dfee201757482ccbc25f067b4429da083d81c8d529cb547
b297410a0f739e14f1b7821da518304de8467d9dfda17dd9d45dde4ed8744e9b
3a36934a9ff935148023ffc29f1088bbc8bc24274b78ced4600d66dc06f9684e
e063f915fef1b9ce3ff49de0c6d5c8921dbce27a3a65153e6a22e03387f54873
955913f83f7d12f356e921f1df67cffe8c67e1d52b25050e02991cfa33906cbe
6dc5fe2eb03e1985597f3d5325056c2a54200cbb5b9d2d5d82ee5eb6a08b627c
Domains
majul.com
mbxvii.com
roboticsnetwork.duckdns.org
myleftheart.com
anthropologydentist.website
ns1.anthropologydentist.website
www.bezholesterol.info
saint-mary.us
hyoeyeep.ws
xnewlook.com
tinylittlevoice.in
www.lessthan150.com
www.pensionhotel.us
stanmartin.info
www.vntask.com
www.tualmiasde.com
www.witgedjqmoxvwv.com
secure.stanndard.com
graphicsheat.com
geostar.info

HAVE A LOOK AT

Adwind screenshot
Adwind
adwind trojan
Adwind RAT, sometimes also called Unrecom, Sockrat, Frutas, jRat and JSocket is a Malware As A Service Remote Access Trojan that attackers can use to collect information from infected machines. It was one of the most popular RATs in the market in 2015.
Read More
Agent Tesla screenshot
Agent Tesla
agenttesla trojan rat stealer
Agent Tesla is spyware that collects information about the actions of its victims by recording keystrokes and user interactions. It is falsely marketed as a legitimate software on the dedicated website where this malware is sold.
Read More
Ave Maria screenshot
Ave Maria
avemaria stealer trojan rat
Ave Maria malware is a Remote Access Trojan that is also called WARZONE RAT. Hackers use it to control PCs of their victims remotely and steal information from infected PCs. For example, they can remotely activate the camera to take pictures of a victim and send them to a control server
Read More
Crimson RAT screenshot
Crimson RAT
crimson rat trojan
Crimson is a Remote Access Trojan — a malware that is used to take remote control of infected systems and steal data. This particular RAT is known to be used by a Pakistani founded cybergang that targets Indian military objects to steal sensitive information.
Read More
Danabot screenshot
Danabot
danabot trojan stealer
Danabot is an advanced banking Trojan malware that was designed to steal financial information from victims. Out of the Trojans in the wild this is one of the most advanced thanks to the modular design and a complex delivery method.
Read More
Dridex screenshot
Dridex
dridex trojan banker
Dridex is a very evasive and technically complex banking Trojan. Despite being based on a relatively old malware code, it was substantially updated over the years and became capable of using very effective infiltration techniques that make this malware especially dangerous.
Read More