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News alert: SquareX discloses nasty browser-native ransomware that’s undetectable by antivirus

The Last Watchdog

Ransomware attacks typically involve tricking victims into downloading and installing the ransomware, which copies, encrypts, and/or deletes critical data on the device, only to be restored upon the ransom payment. Traditionally, the primary target of ransomware has been the victims device. .

Antivirus 147
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Experts warn of a surge in activity associated FICORA and Kaiten botnets

Security Affairs

The “FICORA” botnet downloads and executes a shell script called “multi,” which is removed after execution. The script uses various methods like “wget,” “ftpget,” “curl,” and “tftp” to download the malware. Then it connects to its C2 server (“192.110.247[.]46”),

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New Mirai botnet targets TBK DVRs by exploiting CVE-2024-3721

Security Affairs

. “The request contains a malicious command that is a single-line shell script which downloads and executes an ARM32 binary on the compromised machine.” “Typically, bot infections involve shell scripts that initially survey the target machine to determine its architecture and select the corresponding binary.

IoT 136
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Beyond the Surface: the evolution and expansion of the SideWinder APT group

SecureList

The document or LNK file starts a multi-stage infection chain with various JavaScript and.NET downloaders, which ends with the installation of the StealerBot espionage tool. All the documents use the remote template injection technique to download an RTF file that is stored on a remote server controlled by the attacker.

Malware 142
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Russian organizations targeted by backdoor masquerading as secure networking software updates

SecureList

exe: a small malicious executable an encrypted file containing the payload (the name varies between archives) The ViPNet developer confirmed targeted attacks against some of their users and issued security updates and recommendations for customers (page in Russian). Downloadable payload The msinfo32.exe

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Triada strikes back

SecureList

The modular architecture of the malware gives attackers virtually unlimited control over the system, enabling them to tailor functionality to specific applications. Similar to previous versions, the backdoor downloads and executes other payloads. Neither payload is encrypted. Crypto stealer or dropper?

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IronHusky updates the forgotten MysterySnail RAT to target Russia and Mongolia

SecureList

Unzip the downloaded archive and place the legitimate DOCX file into the %AppData%CiscoPluginsX86binetcUpdate folder Start the CiscoCollabHost.exe file dropped from the ZIP archive. Open the downloaded lure document for the victim. This file is encrypted with a single-byte XOR and is loaded at runtime. io public file storage.

Malware 87