Trojans

Trojan:PowerShell/Keylogger is a sophisticated type of malware that masquerades as legitimate software but performs harmful activities, such as recording keystrokes. It infiltrates computers primarily through deceptive tactics like appearing as a genuine software update or a free download, often delivered via email attachments or untrusted website downloads. Once installed, this malware can exfiltrate sensitive data, monitor user activities, and even create backdoor access to the compromised system. Users might not notice the infection until they observe unusual computer behavior or unexpected changes in their system settings. The malicious script leverages PowerShell, a powerful scripting language in Windows, to execute its payload discreetly. Effective removal typically requires a combination of updated antivirus software and manual intervention. Preventative measures include avoiding downloads from untrusted sources, being cautious with email attachments, and keeping software up to date.

Trojan.Win32.Save.MSIL_Inject is a type of malicious software designed to infiltrate computers by masquerading as legitimate programs or content. It often spreads through email attachments, free downloads, or compromised websites. Once installed, this Trojan can download and install additional malware, engage in click fraud, and record keystrokes and browsing history, sending this information back to remote hackers. It has the capability to inject advertising banners into web pages, convert random text into hyperlinks, and display intrusive pop-up ads recommending fake updates. The malware can remain hidden for extended periods, leading to unusual computer activity and performance degradation. To effectively remove it, users must uninstall any suspicious programs, reset their browsers, and utilize tools such as Rkill, Malwarebytes, and HitmanPro. A final scan with ESET Online Scanner is recommended to ensure complete eradication.

PUABundler:Win32/Yandexbundled is a heuristic detection designed to generically identify a Trojan Horse that poses significant risks to infected systems. This Potentially Unwanted Application (PUA) can compromise computers by downloading and installing other malicious software, engaging in click fraud, recording keystrokes, and monitoring browsing history. It has the capability to inject advertising banners into web pages, grant remote access to hackers, and utilize the infected computer for cryptocurrency mining. Often spread through bundled software, infected removable drives, and compromised webpages, this malware is known for exploiting software vulnerabilities to gain access to systems. Once installed, it can download additional threats, further compromising the security and functionality of the host computer. Infection vectors include USB flash drives, external hard drives, third-party websites, and peer-to-peer networks. The presence of this malware can lead to serious privacy breaches and significant degradation of system performance.

Daolpu Stealer is a sophisticated type of information-stealing malware that masquerades as a legitimate program. It primarily spreads through phishing emails containing a document attachment that poses as a Microsoft recovery manual. When the document is opened, it downloads a base64-encoded DLL file, which is then executed to launch the Daolpu stealer. This malware is designed to terminate all running Chrome processes and harvest login data, cookies, and browser history from various web browsers such as Chrome, Edge, Firefox, and Cốc Cốc. The collected data is temporarily saved and subsequently transmitted back to the attackers' server. Daolpu's emergence is part of a larger malicious campaign exploiting the chaos caused by CrowdStrike's Falcon update, which led to widespread IT outages. By capitalizing on the confusion, attackers have managed to infiltrate numerous systems and compromise sensitive information.

Meterpreter Trojan is a highly sophisticated form of malware that enables cybercriminals to execute a wide range of malicious activities on an infected system. Delivered frequently via phishing campaigns, it tricks victims into opening malicious files or running scripts that install the Trojan. Once active, Meterpreter can inject itself into running processes, establishing a firm foothold in the compromised system. It communicates with command-and-control servers to receive instructions and can perform actions including keylogging, data exfiltration, and remote access. Additionally, it has capabilities for creating botnets and engaging in cryptomining, making it extremely versatile and dangerous. Often linked with notorious groups like UAC-0098 and TrickBot, Meterpreter's advanced functionalities make it a preferred tool for targeted attacks. Its stealthy nature allows it to operate undetected for extended periods, amplifying the potential damage to the victim's data and systems.

TR/Crypt.XPACK.Gen is a generic term used by Avira antivirus software to identify unknown Trojans. These malicious programs are designed to steal personal information or propagate other types of malware, including ransomware. Commonly, they infiltrate systems via spam email campaigns that contain malicious attachments. Upon opening these attachments, the Trojan gets downloaded and installed on the victim's computer. Additional vectors include the exploitation of the "auto run" function in removable media and downloads from unreliable websites. Once installed, the Trojan can monitor a user's browsing activities and cause significant issues such as personal data theft, file encryption, and disruption of computer systems. Peer-to-peer networks and free file hosting websites are other common sources of this malware.

Win32:MalwareX-gen [Trj] is a heuristic detection designed to generically identify a Trojan Horse. This type of malware often spreads through seemingly legitimate emails and attached files, which are spammed to reach numerous inboxes. Upon opening the email and downloading the malicious attachment, the Trojan server installs itself and runs automatically every time the infected device is powered on. It can also propagate through social engineering tactics, such as hidden malicious files in banner advertisements, pop-up ads, or website links. Once installed, it can execute various harmful actions, including downloading and installing other malware, engaging in click fraud, recording keystrokes and browsing history, and granting remote access to the PC. Additionally, it can inject advertising banners into web pages and convert random text into hyperlinks. Devices infected by this Trojan can remain undetected until a specific user action, like visiting a particular website, triggers the malicious code. The most effective way to recognize and eliminate this Trojan is by using malware-removal software such as Malwarebytes and following detailed removal instructions.

Trojan:Win32/Magania.DSK!MTB is a severe password-stealing trojan that injects malicious code into the "explorer.exe" process, enabling it to perform various harmful actions on an infected device. This trojan often spreads through social engineering tactics, tricking users into downloading and executing malicious files. Once installed, it can stealthily steal sensitive information, including passwords, and send this data to remote attackers. Despite its sophisticated evasion techniques, Microsoft Defender Antivirus can detect and automatically remove this threat. However, remnants of the trojan, such as altered system settings or leftover files, may persist even after the initial removal. Regular updates of antimalware definitions and comprehensive system scans are crucial to ensuring all traces of the trojan are eradicated. Users should remain vigilant and avoid downloading software or opening email attachments from untrusted sources to prevent future infections.