“An important feature that sets it apart is that, unlike previous campaigns, which relied on .NET applications, this one used Delphi as the programming language,” Kaspersky said in a report published last week.
Ducktail, Duckport, and NodeStealer are cybercrime groups in Vietnam. They use sponsored ads on Facebook to spread malicious ads and deploy malware. This malware steals login cookies and allows them to control victims’ accounts.
These attacks mainly target users who have access to a Facebook Business account. The attackers gain unauthorized access and use it to place advertisements for their own financial benefit, spreading the infections even more.
A Russian cybersecurity company has documented a campaign where individuals seeking a career change are sent archive files. These files contain a harmful executable file disguised with a PDF icon. The intention is to deceive the targets into opening the binary file.
Doing so results in the malicious file saving a PowerShell script named param.ps1 and a decoy PDF document locally to the “C:\Users\Public” folder in Windows.
“The script uses the default PDF viewer on the device to open the decoy, pauses for five minutes, and then terminates the Chrome browser process,” Kaspersky said.
The parent executable also downloads and launches a rogue library named libEGL.dll, which scans the “C:\ProgramData\Microsoft\Windows\Start Menu\Programs” and “C:\ProgramData\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\” folders for any shortcut (i.e., LNK file) to a Chromium-based web browser.
To proceed, you need to modify the browser’s LNK shortcut file. Add the “–load-extension” command line switch to launch a deceptive extension that pretends to be the real Google Docs Offline add-on in order to remain undetected.
The extension is designed to send information about open tabs to a server controlled by an actor in Vietnam. It is used to hijack Facebook business accounts.
Source: Securelist by Kaspersky