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 83

Encryption DNS Phishing Malware 83

CyberSecurity Insiders

JANUARY 6, 2022

This blog was written by an independent guest blogger. Many people still don’t realize the dangers of phishing, malware, ransomware, unpatched software, and weak passwords. Secure Sockets Layer (SSL) is a standard security protocol that encrypts the connection between a web browser and a server. Use data encryption.

Encryption 134

Encryption Identity Theft Authentication Data breaches 134

Security Affairs

JULY 11, 2022

A large-scale phishing campaign leveraging the Anubis Network is targeting Brazil and Portugal since March 2022. A large-scale phishing campaign is targeting Internet-end users in Brazil and Portugal since March 2022. Figure 1: High-level diagram of the ANUBIS phishing network and its components (2020). The Phishing template.

Phishing 100

Phishing Social Engineering Banking Engineering 100

Troy Hunt

JULY 12, 2018

The rapid adoption has been driven by a combination of ever more visible browser warnings (it was Chrome and Firefox's changes which prompted the aforementioned tipping point post), more easily accessible certificates via both Let's Encrypt and Cloudflare and a growing awareness of the risks that unencrypted traffic presents. DNS Hijacking.

DNS 277

DNS Wireless Risk Banking 277

Security Boulevard

JANUARY 17, 2024

This blog post describes methods that SpecterOps consultants have researched to successfully circumvent this technology during offensive assessments. This can be due to encryption or even size. Encoding using a technique with low entropy often has the products scan the delivered files since they are not fully encrypted.

DNS 64

DNS Penetration Testing Passwords Encryption 64

Security Boulevard

MAY 17, 2023

Most of these steps could’ve been blocked with the aid of DNS protection. Step 2: Compromising a Third-Party Vendor The attacker conducted a spear phishing attack and sent an email that appeared to be from a known entity. The process involves encryption and decryption prior to verifying transactions.

Data breaches 52

Data breaches DNS Malware Phishing 52

eSecurity Planet

MARCH 14, 2022

Cobalt Strike – now owned by HelpSystems – provides various packages and tools to detect outdated software, generate malware , test endpoints , or run spear phishing campaigns that maximize success rate. It’s a pretty clever way to hide malicious instructions using DNS entries and some obfuscation algorithm the Beacon can decode.

Energy and Utilities 129

Energy and Utilities DNS Penetration Testing Ransomware 129

Security Affairs

MARCH 4, 2019

” reads a blog post published by the firm. ” continues the blog post. “These new capabilities represent a significant increase in Necurs’ ability to perpetrate spear phishing, financial crimes and espionage. Instead, the real IP address of the C2 is obfuscated with what is essentially an encryption algorithm.

DNS 80

DNS Banking Advertising Ransomware 80

Security Boulevard

JUNE 28, 2023

Now, ransomware attacks often include data exfiltration, which victimizes targeted organizations twice: Hackers might demand money to de-encrypt a company’s data and threaten to sell that data on the dark web. And they may keep the data once the ransom is paid regardless. If that sounds like the plot of a Tom Clancy novel, think again.

Cybersecurity 59

Cybersecurity DNS Ransomware Malware 59

Pen Test Partners

SEPTEMBER 13, 2023

Section 3 Sensitive authentication data must now be encrypted or protected if stored before authorization. Disk level encryption is no longer permitted for protection unless it is a form of removeable media (e.g., IDS/IPS solutions must detect and alert on any covert malware communications being used such as DNS tunnelling.

Authentication 52

Authentication Passwords Media Encryption 52

Security Affairs

AUGUST 7, 2019

Indeed during the group_a, the main observed delivery techniques where about Phishing (rif.T1193) and Valid Accounts (rif.T1078). From group_b to group_d time frame OilRig started a more sophisticated Spear Phishing (rif.T1193) campaigns within malicious attachments as their main threat delivery activity. Delivery Technique Over Time.

Computers and Electronics 80

Computers and Electronics Penetration Testing DNS Phishing 80

Daniel Miessler

SEPTEMBER 27, 2020

VPNs encrypt the traffic between you and some endpoint on the internet, which is where your VPN is based. If your VPN includes all DNS requests and traffic then you could be hiding significantly from your ISP. You will eventually be hacked via phishing, social engineering, poisoning a site you already frequent, or some other technique.

VPN 326

VPN Risk Hacking Encryption 326

Security Boulevard

OCTOBER 21, 2022

Following is the Decoy PDF executed by the LNK File with the Subject: Phishing Site - Masqueraded Links (Advisory No. Leveraging the decryption logic, we wrote a string decryptor for the WarHawk backdoor through which we were able to decrypt the following Strings from the Encrypted Hex Blobs: LoadLibraryA. 32) in the screenshot below.

DNS 52

DNS Phishing Malware Government 52

Security Affairs

DECEMBER 20, 2018

The Cybaze -Yoroi ZLab dissected one of these recent Danabot variants spread across the Italian cyberspace leveraging “ Fattura ” themed phishing emails (e.g. The malware tries to connect to the remote host 149.154.157.104 (EDIS-IT IT) through an encrypted SSL channel, then it downloads other components and deletes itself from the filesystem.

Banking 75

Banking Malware Internet Internet 75

SecureList

FEBRUARY 7, 2022

We have been tracking Roaming Mantis since 2018, and published five blog posts about this campaign: Roaming Mantis uses DNS hijacking to infect Android smartphones. Roaming Mantis dabbles in mining and phishing multilingually. Link from smishing message redirects to Wroba or phishing page. Roaming Mantis, part III.

Phishing 80

Phishing DNS Mobile Malware 80

Cisco Security

AUGUST 29, 2022

In part one of our Black Hat USA 2022 NOC blog, we discussed building the network with Meraki: Adapt and Overcome. 25+ Years of Black Hat (and some DNS stats), by Alejo Calaoagan. If there is a specific DNS attack that threatened the conference, we supported Black Hat in blocking it to protect the network.

DNS 86

DNS Wireless Malware Firewall 86

SecureList

SEPTEMBER 29, 2021

Later in May 2021, Microsoft also attributed spear-phishing campaign impersonating a US-based organization to Nobelium. DNS hijacking. Later this year, in June, our internal systems found traces of a successful DNS hijacking affecting several government zones of a CIS member state. December 28, 2020 to January 13, 2021.

DNS 96

DNS Malware Engineering Encryption 96

Malwarebytes

SEPTEMBER 14, 2022

From industry tips and best practices to the latest Malwarebytes product releases and how-tos, our Business newsletter is chock-full of the best of our business blog. DNS filtering. The next technology you need to prevent cyberattacks is a DNS filter. But first, a little bit about what DNS (domain name system) is.

Technology 63

Technology DNS Cyber Insurance Insurance 63

Security Affairs

FEBRUARY 19, 2019

Over the last few days, a phishing campaign from DHL and entitled “ DHL Shipment Notification ” has been targeted users worldwide distribution the Muncy malware. Now, the malware is targeting user’s worldwide and has been spread via phishing campaigns. The phishing campaign trying to impersonate DHL. Pay attention.

Malware 78

Malware Phishing DNS Engineering 78

Duo's Security Blog

JANUARY 28, 2022

This, in combination with network encryption, will lay a strong foundation against phishing and other common attack vectors. The memo emphasizes the importance of including cloud-based platforms, applications and systems in the agency zero trust strategy.

Authentication 52

Authentication Government DNS Encryption 52

Security Boulevard

JUNE 14, 2023

That’s essentially the hackers’ mechanism for exploring the target environment, advancing the attack, stealing data and potentially encrypting it to hold the target for ransom. You can deploy HYAS Protect as a cloud-based protective DNS security solution or through API integration with existing cybersecurity services.

DNS 101

DNS Malware Financial Services Architecture 101

eSecurity Planet

DECEMBER 3, 2021

Krebs wrote for The Washington Post between 1995 and 2009 before launching his current blog KrebsOnSecurity.com. Facebook Plans on Backdooring WhatsApp [link] — Schneier Blog (@schneierblog) August 1, 2019. " Instead of keeping DNS for most consumers at their ISP, the DoH providers now seize a Web usage goldmine.

Accountability 134

Accountability Cybersecurity Penetration Testing InfoSec 134

SecureList

JUNE 15, 2022

Complex attacks almost invariably feature several phases, such as reconnaissance, initial access to the infrastructure, gaining access to target systems and/or privileges, and the actual malicious acts (data theft, destruction or encryption, etc.). Phishing attacks on employees. Obtaining legitimate corporate credentials. more in pm!

VPN 88

VPN Accountability Ransomware Encryption 88

SecureList

APRIL 24, 2023

Introduction We introduced Tomiris to the world in September 2021, following our investigation of a DNS-hijack against a government organization in the Commonwealth of Independent States (CIS). Tomiris (Golang implant) Backdoor Golang Described in our original blog post. Some samples contain traces of Russian language.

Malware 88

Malware DNS Government Software 88

Lenny Zeltser

MAY 3, 2019

Campaign attackers have been highly effective at fooling victims into revealing their logon credentials to copycat websites (phishing). Use encrypted chat for sensitive discussions. Minimize the use of email, if practical, in favor of closed-group, encrypted messaging tools. Lock down domain registrar and DNS settings.

Cybersecurity 111

Cybersecurity Social Engineering Authentication Software 111

Security Boulevard

JANUARY 20, 2022

In this blog, we will share complete technical analysis of the attack chain, the C2 infrastructure, threat attribution, and data exfiltration. We have not added the analysis of these samples in this blog, but they were all configured with the same C2 server, which we have included in the IOCs section. Threat attribution. Attack flow.

Accountability 118

Accountability DNS Phishing Architecture 118