Fox IT

AUGUST 11, 2022

This Saitama implant uses DNS as its sole Command and Control channel and utilizes long sleep times and (sub)domain randomization to evade detection. In May 2022, security firm Malwarebytes published a two 1 -part 2 blog about a malware sample that utilizes DNS as its sole channel for C2 communication. Introduction.

DNS 66

DNS Engineering Malware Encryption 66

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.

DNS 121

DNS VPN Encryption Passwords 121

Security Affairs

NOVEMBER 26, 2019

Researchers at SEC Consult Vulnerability Lab discovered multiple issues in several security products from Fortinet, including hardcoded key and encryption for communications. “ Fortinet products, including FortiGate and Forticlient regularly send information to Fortinet servers (DNS: guard.fortinet.com) on. Pierluigi Paganini.

Encryption 110

Encryption Antivirus DNS Advertising 110

Krebs on Security

MARCH 31, 2020

PT Monday evening, Escrow.com’s website looked radically different: Its homepage was replaced with a crude message in plain text: The profanity-laced message left behind by whoever briefly hijacked the DNS records for escrow.com. The attacker also obtained free encryption certificates for escrow.com from Let’s Encrypt.

Phishing 288

Phishing DNS Social Engineering Accountability 288

Security Affairs

MARCH 4, 2020

Let’s Encrypt is going to revoke over 3 million certificates today due to a flaw in the software used to verify users and their domains before issuing a certificate. A bug in Let’s Encrypt’s certificate authority (CA) software, dubbed Boulder, caused the correct validation for some certificates.

Encryption 107

Encryption Advertising DNS Software 107

Security Affairs

JANUARY 29, 2023

Copycat Criminals mimicking Lockbit gang in northern Europe Sandworm APT targets Ukraine with new SwiftSlicer wiper ISC fixed high-severity flaws in DNS software suite BIND Patch management is crucial to protect Exchange servers, Microsoft warns Hacker accused of having stolen personal data of all Austrians and more CVE-2023-23560 flaw exposes 100 (..)

DNS 85

DNS Data breaches Hacking Backups 85

Security Affairs

APRIL 12, 2019

The hacker that hacked and defaced Matrix.org decided to disclose the security issues discovered during the attack and offers advice. This week, the hacker behind the hack of Matrix.org decided to disclose the vulnerabilities discovered during the attack. SecurityAffairs – Matrix.org, hack). Pierluigi Paganini.

Hacking 81

Hacking DNS Passwords Data breaches 81

Security Affairs

DECEMBER 24, 2018

The communications are not encrypted, however the WiFi password is sent encrypted during set up (albeit trivial to decrypt).” “As the communications are not encrypted, it is simple to Man-in-the-Middle the traffic and analyse the API.” ” reads the analysis published by MWR InfoSecurity.

IoT 77

IoT Hacking DNS Authentication 77

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 82

Malware DNS Antivirus Encryption 82

Security Affairs

NOVEMBER 5, 2021

Talos researchers warn of a new threat actor that is hacking Microsoft Exchange servers by exploiting ProxyShell flaws to gain access to corporate and deploy the Babuk Ransomware. The ransomware module encrypts the files in the victim’s server and appends a file extension.babyk to the encrypted files.”

Ransomware 123

Ransomware Backups Encryption DNS 123

SiteLock

AUGUST 27, 2021

An SSL Certificate is used to establish a secure encrypted connection between a web browser and a web server. Why would cybercriminals be interested in hacking a vegan food blog? A WAF can provide web application protection, infrastructure protection and DNS protection—all vital components for protecting against DDoS attacks.

Hacking 98

Hacking DDOS eCommerce Firewall 98

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.” SecurityAffairs – hacking, SOHO). ” concludes the report. Pierluigi Paganini.

DNS 126

DNS Firmware VPN Risk 126

eSecurity Planet

DECEMBER 8, 2023

Domain name service (DNS) attacks threaten every internet connection because they can deny, intercept, and hijack connections. With the internet playing an increasing role in business, securing DNS plays a critical role in both operations and security. TLS and HTTPS inherently create secured and encrypted sessions for communication.

DNS 113

DNS DDOS Firewall Architecture 113

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. SecurityAffairs – hacking, Ttint botnet). This botnet does not seem to be a very typical player.” Pierluigi Paganini.

IoT 137

IoT Firmware DNS Advertising 137

Security Affairs

JUNE 12, 2022

SecurityAffairs – hacking, newsletter). Please vote for Security Affairs and Pierluigi Paganini in every category that includes them (e.g. sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”). To nominate, please visit:?. Follow me on Twitter: @securityaffairs and Facebook.

Ransomware 112

Ransomware DNS Cybercrime Hacking 112

Security Affairs

SEPTEMBER 25, 2022

SecurityAffairs – hacking, newsletter). If you want to also receive for free the newsletter with the international press subscribe here. builder Over 39K unauthenticated Redis services on the internet targeted in cryptocurrency campaign Hackers stole $160 Million from Crypto market maker Wintermute U.S. Pierluigi Paganini.

Cryptocurrency 83

Cryptocurrency Data breaches DNS DDOS 83

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. SecurityAffairs – hacking, Diavol ransomware). ” reads the flash alert published by the FBI. ” continues the report.

Ransomware 107

Ransomware Banking Malware Encryption 107

Security Affairs

FEBRUARY 18, 2024

Datacenter Proxies: Choosing the Right Option CISA adds Roundcube Webmail Persistent XSS bug to its Known Exploited Vulnerabilities catalog Canada Gov plans to ban the Flipper Zero to curb car thefts ExpressVPN leaked DNS requests due to a bug in the split tunneling feature 9 Possible Ways Hackers Can Use Public Wi-Fi to Steal Your Sensitive Data US (..)

Cybercrime 93

Cybercrime Ransomware Malware Data breaches 93

Security Affairs

JANUARY 2, 2023

Exfiltrate the collected data via encrypted DNS queries to the domain *.h4ck[.]cfd, cfd, using the DNS server wheezy[.]io. SecurityAffairs – hacking, PyPI). The malicious binary performs the following actions: Get system information; Reads the following files: /etc/passwd. The first 1,000 files in $HOME/*.

DNS 85

DNS Encryption Hacking Information Security 85

Malwarebytes

JANUARY 22, 2024

In December 2023, the US charged two Russians believed to be members of this group, for their role in a campaign that hacked government accounts. These lure documents, which are harmless PDF files, are sent to the target, but when they open them the content appears to be encrypted.

Social Engineering 93

Social Engineering Government Media DNS 93

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. SecurityAffairs – hacking, cybercrime).

Ransomware 100

Ransomware DNS Cybercrime Malware 100

Security Affairs

FEBRUARY 9, 2021

Another interesting issue addressed by Microsoft with Microsoft February 2021 Patch Tuesday security updates is a Windows DNS Server Remote Code Execution vulnerability tracked as CVE-2021-24078. “This patch fixes a bug in the Windows DNS Server that could allow remote code execution on affected systems. Pierluigi Paganini.

DNS 98

DNS IoT Backups Mobile 98

eSecurity Planet

SEPTEMBER 17, 2021

A significant part of hacking consists of diverting the function of existing systems and software, and hackers often use legitimate security tools to perform cyber attacks. Cobalt Strike Beacon Linux enables emulation of advanced attacks to a network over HTTP, HTTPS, or DNS. A New Variant of Cobalt Strike.

DNS 113

DNS Malware Software Security Awareness 113

Security Affairs

MAY 15, 2023

Merdoor is a fully-featured backdoor that supports multiple capabilities, including installing itself as a service, keylogging, a variety of methods to communicate with its command-and-control (C&C) server (HTTP, HTTPS, DNS, UDP, TCP), and the ability to listen on a local port for commands.

Encryption 82

Encryption DNS Phishing Malware 82

Security Affairs

MAY 6, 2023

Twitter confirmed that a security incident publicly exposed Circle tweets FBI seized other domains used by the shadow eBook library Z-Library WordPress Advanced Custom Fields plugin XSS exposes +2M sites to attacks Fortinet fixed two severe issues in FortiADC and FortiOS Pro-Russia group NoName took down multiple France sites, including the French (..)

Data breaches 93

Data breaches Malware Mobile Spyware 93

Malwarebytes

OCTOBER 16, 2022

The transmission of data outside of the VPN is something which happens quite deliberately, to all brands of VPN, and not as the result of some sort of terrible hack or exploit. Worse, it leaks DNS requests. All of the traffic that appeared in the video is either encrypted or double encrypted. — Mysk ????????

VPN 75

VPN DNS Encryption Engineering 75

Security Affairs

JULY 21, 2023

The attackers obtained encrypted passwords from NetScaler ADC configuration files, and the decryption key was stored on the ADC appliance. The attackers attempted to verify outbound network connectivity with a ping command and executed host commands for a subnet-wide DNS lookup. Network-segmentation controls blocked this activity too.

VPN 77

VPN Cyber Attacks DNS Software 77

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. SecurityAffairs – hacking, Microsoft Exchange).

DNS 109

DNS Accountability Government Cyber Attacks 109

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. Pierluigi Paganini.

DNS 78

DNS Advertising Spyware Software 78

Security Affairs

FEBRUARY 12, 2024

ExpressVPN addressed a bug in the split tunneling feature that exposed the domains visited by the users to configured DNS servers. The expert noticed that the DNS queries were sent to the DNS server configured on the computer. No other VPN protections, such as encryption, were affected.” ” reads the advisory.

DNS 109

DNS VPN Encryption Internet 109

SecureWorld News

MARCH 29, 2024

Cybercriminals can then exploit the compromised device for various purposes, such as stealing personal information, conducting financial fraud, recruiting it into a botnet, or encrypting data and holding it for ransom. This interference is a major catalyst for double extortion that involves both a breach and data encryption.

Cybercrime 86

Cybercrime Advertising Engineering Antivirus 86

Security Affairs

JUNE 20, 2022

SecurityAffairs – hacking, newsletter). Security Affairs is one of the finalists for the best European Cybersecurity Blogger Awards 2022 – VOTE FOR YOUR WINNERS. Please vote for Security Affairs and Pierluigi Paganini in every category that includes them (e.g. To nominate, please visit:?. Follow me on Twitter: @securityaffairs and Facebook.

Spyware 69

Spyware DNS Surveillance Ransomware 69

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. SecurityAffairs – hacking, Managed.com). The company reported the incident to law enforcement and started working to restore its infrastructure. Pierluigi Paganini.

Ransomware 111

Ransomware DNS Encryption Hacking 111

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. SecurityAffairs – hacking, PurpleFox botnet).

Encryption 87

Encryption DNS Architecture Firewall 87

Security Affairs

DECEMBER 12, 2019

Microsoft experts reported that the GALLIUM hacking group exploits unpatched vulnerabilities to compromise systems running /JBoss application servers. The operators leverage on low cost and easy to replace infrastructure using dynamic-DNS domains and regularly reused hop points. SecurityAffairs – GALLIUM, hacking).

Telecommunications 66

Telecommunications DNS Malware Advertising 66

Security Affairs

AUGUST 29, 2023

The attackers obtained encrypted passwords from NetScaler ADC configuration files, and the decryption key was stored on the ADC appliance. The attackers attempted to verify outbound network connectivity with a ping command and executed host commands for a subnet-wide DNS lookup. Network-segmentation controls blocked this activity too.

VPN 101

VPN Ransomware DNS Malware 101

CyberSecurity Insiders

MARCH 21, 2021

With a VPN like Surfshark to encrypt your online traffic and keep it protected against any security breach, your valuable data isn’t going to get compromised easily anytime soon. Most external hacking takes place during information transfer over an internet connection. Protecting your data is very simple. Train your employees .

Small Business 145

Small Business Cyber Attacks VPN Backups 145