Sophos Labs employees have been victims of social engineering spam.
Cybercriminals are abusing the Windows 10 AppInstaller.exe application in the new BazarBackdoor phishing campaign. According to cybersecurity researchers at Sophos Labs, the firm’s employees become victims of spam using social engineering.
In one of the letters sent by the “assistant general manager of Sophos,” the defunct Adam Williams was trying to find out why the researcher did not respond to the client’s complaint. The letter also contained a link to the PDF message. The link was actually a trap and revealed to experts a “new” method used to deploy BazarBackdoor malware.
In this campaign, criminals use the Windows 10 app installation process to download malicious payloads. Attackers redirect potential victims to an Adobe-branded website and ask users to click a button to preview the .PDF file. However, when you hover over the link, the prefix “ms-appinstaller” is displayed.
“During the attack, I realized that building the URL launches the browser [в моем случае, браузер Microsoft Edge в Windows 10] and calls the AppInstaller.exe tool used by the Windows Store application to download and run, which is at the other end of this link, explained expert Andrew Brandt.
The link points to a text file named Adobe.appinstaller, which then points to a larger file, Adobe_184.108.40.206_x64appbundle, located at a separate URL.
Then a notification appears that the software has been digitally signed with a certificate issued a few months ago. The victim is asked to allow the installation of the Adobe PDF Component, and if successful, the BazarBackdoor malware is deployed and launched in a matter of seconds.
BazarBackdoor is analogous to the BazarLoader malware and communicates over HTTPS, but is a distinctive malware due to the large amount of noisy traffic generated by the backdoor. BazarBackdoor can steal system data and has been linked to the installation of Trickbot as well as the potential deployment of Ryuk ransomware.
Cryptocurrency exchange Binance was robbed of $570 million. Hacker withdrew BNB tokens
Cryptocurrency exchange Binance has undergone another hacker attack. The attackers managed to withdraw BNB tokens worth about $570 million.
Somewhat earlier it was reported that the attack allowed the hackers to steal about $110 million, but now it turned out that everything is much worse. At the same time, the specialists of the exchange managed to freeze part of the funds, but we are talking about only 7 million dollars, which is clearly insignificant against the background of 570 million.
The exchange revealed that a cross-chain bridge connected to its BNB chain was attacked, allowing hackers to move BNB tokens off the network. Now the network has been restored, and the clients’ funds, according to Binance, are safe.
The fact of the theft of funds contributed to a sharp drop in the BNB rate by almost 5%, but after a few hours, almost half of the fall was redeemed.
Hacker who earned $27 million in cyberattacks will spend 20 years in prison and pay $21 million in fines
A Florida district court has sentenced 34-year-old IT engineer Sebastien Vashon-Desjardins to 20 years in prison for carrying out at least 90 cyberattacks.
It is noted that for several years of his activity, the hacker, using the NetWalker encryption virus, earned about $ 27 million. A search of Vashon-Desjardins revealed a crypto wallet containing 719 bitcoins, which was about $22 million at the time of the cybercriminal’s arrest in January 2022.
According to investigators, the 34-year-old cybercriminal acted in collusion with other hackers. Vashon-Desjardins himself played the role of an attacker: he infected the corporate networks of various companies with a virus and then demanded a ransom from them. Organizations from the USA, Canada and a number of European countries suffered from the activities of the criminal.
It is noted that, in addition to the prison term, the court also imposed a fine on Vashon-Desjardins in the amount of $ 21 million. Also, the criminal will have to pay compensation to the companies affected by his actions. The amount of damages has not yet been established.
Unique behavior of Ryzen 7000 processors. The notorious patches from the Specter vulnerability improve the performance of new CPUs
Recently, various vulnerabilities in processors have been talked about much less often, and users no longer worry about performance degradation due to patches. As it turns out, Ryzen 7000 processors generally benefit from such patches!
At least this is true for Linux, since it was in this OS that the author tested the Ryzen 9 7950X and Ryzen 5 7600X. It turned out that when working out of the box, the CPUs show better performance than when loading a special version of Linux with a deactivated patch from the Specter V2 vulnerability.
Of course, such results do not appear everywhere, and during normal work they are unlikely to be critical. In particular, in total, according to the results of 190 tests, the difference was only 3%.
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