Security Affairs

FEBRUARY 12, 2024

Public Wi-Fi users are prime targets for MITM attacks because the information they send is often not encrypted, meaning it’s easy for hackers to access your data. Look for the “https” in the website’s URL—it means there’s some level of encryption.

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DNS VPN Encryption Passwords 142

Security Affairs

MARCH 3, 2024

The recent sample of Linux variants of BIFROSE employes RC4 encryption to encrypt the collected victim data. The researchers observed the malware trying to contact a Taiwan-based public DNS resolver with the IP address 168.95.1[.]1. com by using the public DNS resolver at 168.95[.]1.1.

DNS 139

DNS Malware Encryption Hacking 139

Security Affairs

APRIL 24, 2024

Below the infection chain described by Avast: The eScan updater triggers the update The downloaded package file is replaced with a malicious one on the wire because of a missing HTTPS encryption (MitM is performed) A malicious package updll62.dlz GuptiMiner connects directly to malicious DNS servers, bypassing the DNS network entirely.

Antivirus 129

Antivirus Malware DNS Cryptocurrency 129

Security Affairs

OCTOBER 11, 2021

A wildcard certificate allows administrators to use a single wildcard certificate to protect each of subdomains, anyway, researchers warn that the use of wildcard TLS certificates could be exploited by attackers to decrypt TLS-encrypted traffic.

DNS 139

DNS Encryption Risk Firewall 139

Security Affairs

MAY 24, 2024

The use of Dynamic DNS (DDNS) services embedded in appliances can potentially expose data and devices to attacks. The use of Dynamic DNS (DDNS) services embedded in appliances, such as those provided by vendors like Fortinet or QNAP, carries cybersecurity implications. It increases the discoverability of customer devices by attackers.

DNS 134

DNS Manufacturing Firewall Internet 134

Security Affairs

APRIL 7, 2024

The flaw affects multiple D-Link NAS devices, including models DNS-340L, DNS-320L, DNS-327L, and DNS-325. The flaw impacts the following devices: DNS-320L Version 1.11, Version 1.03.0904.2013, Version 1.01.0702.2013 DNS-325 Version 1.01 DNS-327L Version 1.09, Version 1.00.0409.2013 DNS-340L Version 1.08

Internet 109

Internet Internet DNS Hacking 109

Security Affairs

JULY 5, 2024

The DDoS botnet Zergeca supports six attack methods and implements additional functionalities such as proxying, scanning, self-upgrading, persistence, file transfer, reverse shell, and collecting sensitive device information. 54.51.82, has been associated with at least two Mirai botnets since September 2023. . ” concludes.

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DDOS DNS Encryption Malware 136

Security Affairs

NOVEMBER 5, 2021

It also deletes volume shadow service (VSS) snapshots from the server using vssadmin utility to make sure the encrypted files cannot be restored from their VSS copies. The ransomware module encrypts the files in the victim’s server and appends a file extension.babyk to the encrypted files.” Pierluigi Paganini.

Ransomware 144

Ransomware Backups Encryption DNS 144

Security Affairs

SEPTEMBER 22, 2021

For the specific DNS-based MITM attack used above, the attacker must race DNS queries from the Circle update daemon. Other MitM attacks that do not rely on DNS manipulation will also allow an attacker to exploit this vulnerability.” ” concludes the report.

DNS 140

DNS Firmware VPN Risk 140

Security Affairs

DECEMBER 5, 2020

The backdoor uses multiple tricks to evade detection and leverages DNS over HTTPS (DoH) to communicate with its C2 server, using Cloudflare responders. On top of the DNS C2 communication logic, PowerPepper also signals successful implant startup and execution flow errors to a Python backend, through HTTPS.

DNS 120

DNS Phishing Encryption Antivirus 120

Security Affairs

OCTOBER 5, 2020

Unlike other IoT DDoS botnets, Ttint implements 12 remote access functions such as Socket5 proxy for router devices, tampering with router firewall and DNS settings, executing remote custom system commands. This botnet does not seem to be a very typical player.”

IoT 145

IoT Firmware Advertising DNS 145

Security Affairs

JULY 15, 2024

An attacker can exploit the issue to obtain encrypted credentials stored in the configuration database, potentially leading to gaining access to the backup infrastructure hosts. Once data exfiltration was completed, the attackers deployed ransomware to encrypt the infected systems. The vulnerability CVE-2023-275327 (CVSS score of 7.5)

Backups 139

Backups Ransomware Antivirus DNS 139

Security Affairs

AUGUST 31, 2022

Once executed, the malware makes unique DNS connections, experts determined that the binary was leveraging a DNS data exfiltration technique by sending unique DNS queries to a target C2 DNS server. “This technique works by sending an encrypted string appended to the DNS query set as a subdomain.

Malware 98

Malware DNS Antivirus Encryption 98

Security Affairs

NOVEMBER 19, 2020

Impacted systems included WordPress and DotNetNuke managed hosting platforms, online databases, email servers, DNS servers, RDP access points, and FTP servers. Our Technology and Information Security teams are working diligently to eliminate the threat and restore our customers to full capacity.”

Ransomware 142

Ransomware DNS Encryption Hacking 142

Cisco Security

NOVEMBER 29, 2021

Cisco Secure supports the NOC operations with DNS visibility and architecture intelligence ( Cisco Umbrella and Cisco Umbrella Investigate ) and automated malware analysis and threat intelligence ( Cisco Secure Malware Analytics (Threat Grid) , backed by Cisco Talos Intelligence and Cisco SecureX ).

DNS 145

DNS Malware Mobile Firewall 145

Security Affairs

JANUARY 20, 2022

Diavol encrypts files solely using an RSA encryption key, and its code is capable of prioritizing file types to encrypt based on a pre-configured list of extensions defined by the attacker. “The FBI has not yet observed Diavol leak victim data, despite ransom notes including threats to leak stolen information.”

Ransomware 127

Ransomware Banking Malware Encryption 127

Security Affairs

JUNE 18, 2020

They use DNS tunneling for stealthier C&C communications, and place execution guardrails on the malicious components to hide the malware from security researchers.” Experts also observed attackers using a DNS downloader that was designed for long-term, covert access to the target machine.

DNS 120

DNS Advertising Spyware Software 120

Security Affairs

FEBRUARY 5, 2021

The malicious code also leverages other techniques to avoid detection, for example it modifies the system DNS resolvers and uses Google’s public DNS servers to bypass DNS monitoring tools. It also hides malicious processes using library injection and encrypts the malicious payload.

Malware 117

Malware DNS Cryptocurrency Internet 117

Security Affairs

JUNE 12, 2022

Ransomware gangs are exploiting CVE-2022-26134 RCE in Atlassian Confluence servers HID Mercury Access Controller flaws could allow to unlock Doors Iran-linked Lyceum APT adds a new.NET DNS Backdoor to its arsenal PACMAN, a new attack technique against Apple M1 CPUs Threat actors exploit recently disclosed Atlassian Confluence flaw in cryptomining campaign (..)

Ransomware 143

Ransomware DNS Cybercrime Hacking 143

Security Affairs

NOVEMBER 9, 2020

“The Snugy backdoor uses a DNS tunneling channel to run commands on the compromised server. The threat actor would log into the same legitimate email account and create an email draft with a subject of “555,” which includes the command in an encrypted and base64 encoded format. ” reads the analysis published by the experts.

DNS 131

DNS Accountability Government Cyber Attacks 131

Security Affairs

JUNE 20, 2024

This campaign used a version of VLC Media Player (disguised as googleupdate.exe) to sideload a Coolclient loader, which then reads and executes encrypted payloads. It logs keystrokes, manages files, and communicates with a C2 server. Quickheal : A backdoor associated with the Needleminer group (also known as RedFoxtrot or Nomad Panda).

DNS 133

DNS Malware Media Encryption 133

Security Affairs

JANUARY 29, 2023

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DNS 98

DNS Data breaches Hacking Backups 98

Daniel Miessler

SEPTEMBER 27, 2020

They think it’s giving them security that it isn’t because they haven’t properly understood the tech and haven’t considered the attack scenarios. VPNs encrypt the traffic between you and some endpoint on the internet, which is where your VPN is based. This is true. The Government. So, probably not a win.

VPN 326

VPN Risk Hacking Encryption 326

Security Affairs

AUGUST 18, 2021

The Diavol ransomware was compiled with Microsoft Visual C/C++ Compiler, it uses user-mode Asynchronous Procedure Calls (APCs) without symmetric encryption algorithm for encryption, which has worse performance compared to symmetric algorithms. Anchor DNS ), except for the username field. reads the analysis published by Fortinet.

Ransomware 103

Ransomware DNS Cybercrime Malware 103

Security Affairs

FEBRUARY 4, 2021

“The encryption algorithm implemented in this botnet and the process of obtaining C2 are nested in layers, like Russian nesting dolls.For this reason we named it Matryosh.” The Matryosh initially decrypts the remote hostname and uses the DNS TXT request to obtain TOR C2 and TOR proxy, then it connects with the TOR proxy.

DDOS 138

DDOS DNS Antivirus Malware 138

Security Affairs

JULY 14, 2021

We have observed malicious binaries use openssl with base64, Advanced Encryption Standard (AES), CBC (Cipher Block Chaining) to thwart security scanners in the format as shown below: openssl enc -aes-256-cbc -d -A -base64 -pass pass:<> Curl. Bash scripts invoking encrypted Zip file.

Adware 130

Adware Encryption Malware Passwords 130

Malwarebytes

JANUARY 22, 2024

Microsoft, who tracks the group as Star Blizzard, says the group targets individuals and organizations involved in international affairs, defense, and logistics support to Ukraine, as well as academia, information security companies, and other entities aligning with Russian state interests.

Social Engineering 117

Social Engineering Government Media DNS 117

Security Affairs

JUNE 24, 2024

For secure communication, operators employ DNS/ICMP tunneling, WSS, and QUIC protocols. GoRed is capable of obtaining credentials from compromised systems and collecting various types of system information, including active processes, host names, network interfaces, and file system structures.

Cybercrime 116

Cybercrime Telecommunications DNS Technology 116

SecureWorld News

SEPTEMBER 7, 2023

Quantum computing poses a potential threat to current cybersecurity practices, which are based on encryption algorithms that can be broken by quantum computers. Director of Information Security, State of Colorado Governor's Office of Information Technology; and Toby Zimmerer, Sr. Demand and Delivery Director, Optiv.

Encryption 109

Encryption Technology Risk Architecture 109

Security Affairs

JANUARY 2, 2023

The malicious binary performs the following actions: Get system information; Reads the following files: /etc/passwd. Exfiltrate the collected data via encrypted DNS queries to the domain *.h4ck[.]cfd, cfd, using the DNS server wheezy[.]io. The first 1,000 files in $HOME/*. Is is a real supply chain attack?

DNS 98

DNS Encryption Hacking Information Security 98

Security Affairs

MARCH 22, 2020

. “On March 16th I have found an unprotected and thus publicly available Elasticsearch instance which appeared to be managed by a UK-based security company, according to the SSL certificate and reverse DNS records.” ” wrote Security Discovery’s researcher Bob Diachenko. Adobe, Last.

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Data breaches Advertising DNS Engineering 111

Security Affairs

SEPTEMBER 25, 2022

Every week the best security articles from Security Affairs free for you in your email box. If you want to also receive for free the newsletter with the international press subscribe here. gov adds more Chinese Telecom firms to the Covered List Imperva blocked a record DDoS attack with 25.3

Cryptocurrency 100

Cryptocurrency Data breaches DNS DDOS 100

Security Affairs

DECEMBER 12, 2019

The operators leverage on low cost and easy to replace infrastructure using dynamic-DNS domains and regularly reused hop points. “MSTIC analysis indicates the use of dynamic DNS providers as opposed to registered domains is in line with GALLIUM’s trend towards low cost and low effort operations.”

Telecommunications 97

Telecommunications DNS Malware Advertising 97

eSecurity Planet

MAY 28, 2021

Ransomware: Encryption, Exfiltration, and Extortion. Ransomware perpetrators of the past presented a problem of availability through encryption. Nickels suggests organizations follow this guidance: Also Read: How Zero Trust Security Can Protect Against Ransomware. Detect Focus on encryption Assume exfiltration.

Software 121

Software DNS Firmware VPN 121

Security Affairs

OCTOBER 20, 2021

“However, instead of sending it in cleartext, the client deploys a symmetric AES encryption for any communication over the WebSocket for the first exchange, as no shared secret is established yet, and the AES encryption will generate a default key for this first exchange. .” continues the analysis.

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Encryption DNS Architecture Firewall 111

Security Affairs

JULY 23, 2019

Attackers also noticed that systems infected with the above two families were also targeted with the RoyalDNS malware that uses DNS to communicate with the C&C server. Once executed the command the backdoor returns output through DNS.

DNS 110

DNS Malware Advertising Manufacturing 110

Security Affairs

JUNE 20, 2022

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Spyware 104

Spyware DNS Ransomware Surveillance 104