Security Affairs

JANUARY 29, 2019

In the last weeks, the Cybaze -Yoroi ZLAB investigated a new APT28 campaign leveraging the Zepakab Downloader. Sha256 e6e93c7744d20e2cac2c2b257868686c861d43c6cf3de146b8812778c8283f7d Threat Zepakab/Zebrocy Downloader ssdeep 12288:QYV6MorX7qzuC3QHO9FQVHPF51jgcSj2EtPo/V7I6R+Lqaw8i6hG0:vBXu9HGaVHh4Po/VU6RkqaQ6F. Pierluigi Paganini.

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Malware Advertising InfoSec Antivirus 84

Security Affairs

JANUARY 6, 2023

Antivirus firm Bitdefender released a decryptor for the MegaCortex ransomware allowing its victims to restore their data for free. Antivirus firm Bitdefender released a decryptor for the MegaCortex ransomware , which can allow victims of the group to restore their data for free. RTF”, etc).

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Ransomware Antivirus Encryption Backups 98

SecureWorld News

MARCH 29, 2024

To set such a stratagem in motion, cybercriminals poison legitimate websites with ads that lead to shady URLs or download malicious code camouflaged as something harmless. If a user gets on the hook, they are redirected to a landing page or prompted to download an ostensibly innocuous file.

Cybercrime 78

Cybercrime Advertising Engineering Antivirus 78

Security Affairs

NOVEMBER 19, 2022

The DEV-0569 group carries out malvertising campaigns to spread links to a signed malware downloader posing as software installers or fake updates embedded in spam messages, fake forum pages, and blog comments. The downloader, tracked as BATLOADER , shares similarities with another malware called ZLoader. anydeskos[.]com

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Ransomware Malware Antivirus Phishing 135

Krebs on Security

MAY 22, 2019

On or around May 12, at least two antivirus firms began detecting booby-trapped Microsoft Word files that were sent along with some various of the following message: {Pullman & Assoc. Please download and read the attached encrypted document carefully. Wiseman & Assoc.| Steinburg & Assoc. Swartz & Assoc.

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Phishing Antivirus Scams Malware 277

Security Affairs

FEBRUARY 28, 2023

Antivirus company Bitdefender has released a free decryptor for the recently discovered ransomware family MortalKombat. Good news for the victims of the recently discovered MortalKombat ransomware , the antivirus firm Bitdefender has released a free decryptor that will allow them to recover their file without paying the ransom.

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Ransomware Antivirus Backups Malware 96

Malwarebytes

NOVEMBER 16, 2021

This Android app, purported as a secure messaging application that uses end-to-end encryption, is the latest ruse cybercriminals put upon smartphone users, particularly those based in India, to infect their devices with GravityRAT, a piece of malicious software that is known to spy on people and steal their data. How to stay safe.

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Malware Encryption Marketing Media 127

Hacker Combat

APRIL 6, 2022

You are neither safe on your private nor public network, as ransomware can encrypt your files and hold them hostage. When you open an infected file that seemingly appears safe, ransomware executes its process by encrypting data. You can defeat ransomware through specific preventive measures, including software and encryption.

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Ransomware Antivirus Encryption Passwords 108

Krebs on Security

JANUARY 27, 2021

million last summer in exchange for a digital key needed to unlock files encrypted by the ransomware. Encryption of shared accesses: if several users are logged in to the target computer, the ransomware will infect their mapped drives, as well as network resources where those users are logged in — shared accesses/NAS etc.

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Ransomware Cybercrime Antivirus Encryption 268

CyberSecurity Insiders

MAY 11, 2021

When an online user visits a website to download apps, features or updates, pop-ups or tools that are mostly related to ad companies targeted the device. Firewalls and antivirus solutions do help in curbing ransomware attacks. Installation of software security patches helps in repelling file encrypting malware attacks to the core.

Mobile 80

Mobile Ransomware Antivirus Firewall 80

Security Affairs

APRIL 7, 2021

The CVE-2018-13379 is a path traversal vulnerability in the FortiOS SSL VPN web portal that could be exploited by an unauthenticated attacker to download FortiOS system files through specially crafted HTTP resource requests. The #CRING #ransomware is then downloaded via certutill. ” reads the post published by Kaspersky.

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VPN Ransomware Antivirus Firmware 105

Identity IQ

AUGUST 19, 2023

There are threats that can spread from one file to another, encrypt your files, or monitor what you do. When you update your antivirus software , you make sure it knows about the newest dangers, enabling it to protect your device. IdentityIQ offers antivirus with Bitdefender® Total Security. #2 First, check the website’s URL.

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Internet Internet Password Management Passwords 84

Security Affairs

MARCH 9, 2023

“This payload extracts ScrubCrypt, which obfuscates and encrypts applications and makes them able to dodge security programs. Upon successful exploitation of vulnerable Oracle WebLogic servers, it will download a PowerShell script, named “bypass.ps1,” which contains the ScrubCrypt crypter.

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Antivirus Encryption Hacking Cybercrime 95

eSecurity Planet

APRIL 13, 2023

While some packers like UPX only compress the file, others can also encrypt it. Attackers can use compression to hide malware inside seemingly harmless and legitimate files, which can fool signature-based detection and even advanced artificial intelligence (AI)-based antivirus solutions.

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Antivirus Malware Artificial Intelligence Engineering 99

SecureList

DECEMBER 27, 2022

The first new method the group adopted is aimed at evading the Mark-of-the-Web (MOTW) flag, the security measure whereby Windows displays a warning message when the user tries to open a file downloaded from the internet. For intermediate infection, the actor introduced a downloader to fetch and spawn the next stage payload.

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Malware Banking Passwords Antivirus 132

Security Boulevard

JUNE 7, 2021

In the process of doing so, I encountered a small snag: The FSB's website said in order to contact them securely, I needed to download and install an encryption and virtual private networking (VPN) appliance that is flagged by at least 20 antivirus products as malware.

Antivirus 59

Antivirus VPN Encryption Malware 59

Malwarebytes

SEPTEMBER 12, 2023

A new malvertising campaign is targeting corporate users who are downloading the popular web conferencing software Webex. com) purporting to be Webex: BatLoader: the stealthy malware loader The downloaded file exceeds the size limit for many sandboxes and is designed to bypass detection from antivirus products.

Antivirus 110

Antivirus Advertising Malware Engineering 110

CSO Magazine

NOVEMBER 21, 2022

The analysis discovered that the threat actors behind the campaign leverage extortion without malware-based encryption, have significantly invested in call centers and infrastructure unique to attack targets, and are evolving their tactics over time. This malware element is synonymous with traditional callback phishing attacks.

Phishing 76

Phishing Malware Social Engineering Retail 76

Malwarebytes

JANUARY 17, 2023

The malware was not detected by our antivirus software. Though all the data exfiltrated was encrypted at rest, the third party extracted encryption keys from a running process, enabling them to potentially access the encrypted data," the report further says. We don't just report on threats—we remove them.

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Malware Authentication Antivirus Passwords 82

SecureList

MARCH 10, 2021

Back then, cybercriminals distributed malware under the guise of the Malwarebytes antivirus installer. Some of the lines in the executable file, including the line with the C&C server address, are encrypted to make static detection more difficult. Updater.exe code snippet containing the encrypted address. Patched.netyyk.

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DNS Antivirus Malware Encryption 142

The Last Watchdog

SEPTEMBER 6, 2023

Backups should be kept safely in several places, such as encrypted cloud storage or external hard drives. To avoid potential vulnerabilities, keep your operating system, antivirus software, and other security tools up to date. Refrain from installing illegal or dubious software, and only download wallets from reliable sources.

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Cryptocurrency Backups Passwords Software 100

Security Affairs

AUGUST 31, 2022

The phishing emails contain a Microsoft Office attachment that includes an external reference in its metadata which downloads a malicious template file. Upon opening the document, a malicious template file is downloaded and saved on the system. jpg” that appears as an image of the First Deep Field captured by JWST is downloaded.

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Malware DNS Antivirus Encryption 91

IT Security Guru

AUGUST 9, 2022

By acting as a “middleman” between your network and device – data transmitted through public Wi-Fi is rarely encrypted. Download from official sources . You should download both personal stuff and business-related files from safe sources. You can download a free antivirus program, though it is recommended that you buy one.

Data breaches 103

Data breaches Passwords Antivirus Accountability 103

CyberSecurity Insiders

MARCH 17, 2021

The federal agency says that the said file encrypting malware has already hit around 21 K-12 higher education schools, private institutes along with 4 Universities so far and the victim list might increase by this month end. The attack is taking place by compromising Remote Desktop Protocol credentials or phishing attacks.

Education 93

Education Ransomware Antivirus Backups 93

Security Affairs

MARCH 14, 2022

An HTML file downloads a.lnk file mascaraed of an MSI file that takes advantage of the LoL bins to execute an MSI file (segunda.msi). segunda.msi” downloads and executes an EXE file that will drop the final stage. The victims’ data is encrypted and sent to the C2 server geolocated in Russia. Phishing wave.

Banking 94

Banking Encryption Malware Phishing 94

Fox IT

MARCH 3, 2022

Because of the fact of being distributed via the Google Play Store as a fake Antivirus, we found that they have to include the usage of infected devices in order to spread the malicious app. This feature is used to automatically send reply notification with a message to download the fake Antivirus app.

Banking 81

Banking Malware Encryption Antivirus 81

Hacker Combat

OCTOBER 25, 2021

Some of the samples used different anti-sandboxing methods, including download IP cloaking, encrypted files and enlarged files. Detection of safe browsing and blocking of malware downloads and landing pages. That way, antivirus detectors that trigger malware will be avoided.

Accountability 99

Accountability Malware Scams Antivirus 99

Security Affairs

DECEMBER 10, 2020

. “In observations collected since October 2020, Unit 42 researchers have found that malware authors have been leveraging njRAT (also known as Bladabindi), a Remote Access Trojan, to download and deliver second-stage payloads from Pastebin, a popular website that is well-known to be used to store data anonymously.”

Malware 88

Malware Antivirus Encryption Hacking 88

SiteLock

AUGUST 27, 2021

In each example, we will give you the detection ratio of a free service for detecting malware, VirusTotal , just to demonstrate the likelihood that the malware in the example would have been caught by a standard antivirus tool. The iframe and file download. Knowing that antivirus would not have caught the malware is something to note.

Phishing 95

Phishing Antivirus Malware Firewall 95

Security Boulevard

MARCH 25, 2022

This blog will highlight the most recent changes to the ransomware and how Conti improved file encryption, introduced techniques to better evade security software, and streamlined the ransom payment process. Start encryption using the specified path as the root directory. Size parameter for large file encryption.

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Ransomware Encryption Software Passwords 128

Security Affairs

JULY 1, 2019

Even if the activity of Dridex decreased in the last couple of years, crooks continued to updates it adding new features such the support of XML scripts, hashing algorithms, peer-to-peer encryption, and peer-to-command-and-control encryption. com domain to download the Dridex installer.

Banking 80

Banking Antivirus Advertising Encryption 80

Security Affairs

JULY 28, 2021

PKPLUG used a technique known as “ living off the land ” to bypass antivirus detection and target Microsoft Exchange servers. The analysis of the file revealed that it includes the encrypted and compressed PlugX payload. Aro.dat is, in fact, an encrypted and compressed PlugX payload.” ” reads the analysis.

Encryption 110

Encryption Antivirus Malware Hacking 110

SecureList

DECEMBER 1, 2023

For most implants, the threat actor uses similar implementations of DLL hijacking (often associated with ShadowPad malware) and memory injection techniques, along with the use of RC4 encryption to hide the payload and evade detection. libssl.dll or libcurl.dll was statically linked to implants to implement encrypted C2 communications.

Malware 92

Malware Ransomware Encryption Energy and Utilities 92

SecureList

OCTOBER 25, 2023

It comes equipped with a built-in TOR network tunnel for communication with command servers, along with update and delivery functionality through trusted services such as GitLab, GitHub, and Bitbucket, all using custom encrypted archives. org and execute PowerShell scripts. Bitbucket repository content The repository houses only a README.md

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Malware DNS Encryption Cryptocurrency 108

Krebs on Security

MARCH 28, 2021

Oddly, none of the several dozen antivirus tools available to scan the file at Virustotal.com currently detect it as malicious. Watson said the Krebsonsecurity file will attempt to open up an encrypted connection between the Exchange server and the above-mentioned IP address, and send a small amount of traffic to it each minute.

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Hacking Cybercrime DNS Antivirus 347

eSecurity Planet

DECEMBER 7, 2023

Encryption uses mathematical algorithms to transform and encode data so that only authorized parties can access it. What Encryption Is and How It Relates to Cryptology The science of cryptography studies codes, how to create them, and how to solve them. How Does Encryption Process Data? How Does Encryption Process Data?

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Encryption Passwords IoT Firewall 95

Cytelligence

MARCH 3, 2023

Additionally, encrypting your sensitive data can help prevent hackers from gaining access to your information. All it takes is one employee to fall victim to a phishing email or to accidentally download malware, which can put your entire company at risk. A secure network starts with a strong password policy.

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Cyber Attacks Antivirus Firewall Data breaches 52