The AZORult Trojan is one of the most popular data stealers in the Russian cybercrime underground. The AZORult stealer was first spotted in 2016 by Proofpoint that discovered it was part of a secondary infection via the Chthonic banking trojan. Later it was involved in many
AZORult is able to collect targets browser history, login credentials, crypto-wallet files cookies,
The malware has a relatively high price tag ($100), it supports a broad functionality (i.e. the use of
The malware is also able to download additional payloads onto the infected machines.
The C++ version was first spotted in early March 2019, experts believe it was built by acolytes of CrydBrox, the initial AZORult author, who decided to pull the plug on it after AZORult 3.2 became too widely available.
“It appears that the acolytes of CrydBrox, the very one who pulled the plug on AZORult, decided to rewrite it in C++; this version we call AZORult++.” reads the analysis published by Kaspersky. “The presence of lines containing a path to debugging files likely indicates that the malware is still in development, since developers usually try to remove such code as soon as feasible. “
The analysis of the malware reveals that the AZORult++is affected by several issues, suggesting that the project is in the very early stages of development.
This C++ version is deficient compared to AZORult 3.3, it doesn’t support stealing a feature from many of the browsers and doesn’t implement a loader functionality.
A more detailed analysis reveals that the C++ version is deficient compared to AZORult 3.3,
Original AZORult 3.3 and AZORult++ uses the same algorithm for communication with the C&C server, they use the command format, the structure and method of storing harvested data, and encryption keys.
The malware maintains stolen data in RAM and does not write it to the hard disk to avoid detection.
The most concerning improvement for the C++ version is the ability to establish a remote connection to the compromised machines via RDP.
The malware creates a new, hidden administrator account on the machine, and sets a registry key to establish a Remote Desktop Protocol (RDP) connection.
“Despite its many flaws, the C++ version is already more threatening than its predecessor due to the ability to establish a remote connection to the desktop. Because AZORult++ is likely still in development, we should expect its functionality to expand and bugs to be eliminated, not to mention attempts to distribute it widely under a name that buyers will recognize,” Kaspersky concludes.
(SecurityAffairs – AZORult, malware)
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