Krebs on Security

FEBRUARY 4, 2019

Spammy Bear targeted dormant but otherwise legitimate domains that had one thing in common: They all at one time used GoDaddy’s hosted Domain Name System (DNS) service. The domains documented by MyOnlineSecurity all had their DNS records altered between Jan. 31 and Feb. 22 report on the GoDaddy weakness. Image: Farsight Security.

DNS 244

DNS Ransomware Accountability Internet 244

Krebs on Security

APRIL 4, 2024

Launched in 2008, privnote.com employs technology that encrypts each message so that even Privnote itself cannot read its contents. Other Privnote phishing domains that also phoned home to the same Internet address as pirwnote[.]com The real Privnote, at privnote.com. And it doesn’t send or receive messages. com include privnode[.]com

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Phishing Cryptocurrency DDOS Internet 222

Webroot

FEBRUARY 16, 2021

In recent months, you’ve likely heard about DNS over HTTPS , also known as DNS 2.0 and DoH, which is a method that uses the HTTPS protocol to encrypt DNS requests, shielding their contents from malicious actors and others who might misuse such information. Ultimately, this DNS privacy upgrade has been a long time coming.

DNS 69

DNS Encryption Firewall Network Security 69

Schneier on Security

MAY 1, 2018

Researchers at Princeton University have released IoT Inspector , a tool that analyzes the security and privacy of IoT devices by examining the data they send across the Internet. QuickDDNS is a Dynamic DNS service provider operated by Dahua. They've already used the tool to study a bunch of different IoT devices. No surprises there.

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IoT Manufacturing Encryption DNS 163

NetSpi Technical

OCTOBER 19, 2023

As these are pointing at localhost, it is very likely this is being used as a way to prevent outbound internet access. Moving on, lets see if we can get outbound internet access. It looks like there is no route out from the container to the Internet. Let’s try DNS. Let’s see if we can connect to that and grab the HTML.

DNS 97

DNS Internet Internet Phishing 97

Cisco Security

AUGUST 11, 2021

We looked at REvil, also known as Sodinokibi or Sodin, earlier in the year in a Threat Trends blog on DNS Security. In it we talked about how REvil/Sodinokibi compromised far more endpoints than Ryuk, but had far less DNS communication. Figure 1-DNS activity surrounding REvil/Sodinokibi. Encrypting files.

Ransomware 129

Ransomware DNS Encryption Backups 129

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.

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DNS Wireless Risk Banking 276

Security Boulevard

MAY 17, 2023

Most of these steps could’ve been blocked with the aid of DNS protection. Step 5: Infecting POS Systems The POS systems didn’t have access to the Internet themselves. The process involves encryption and decryption prior to verifying transactions. There are still many opportunities to thwart an attack at the DNS level.

Data breaches 52

Data breaches DNS Malware Phishing 52

Troy Hunt

NOVEMBER 25, 2020

Back to the bit about risks impacting data collected by IoT devices and back again to CloudPets, Context Security's piece aligned with my own story about kids' CloudPets messages being left exposed to the internet. Or are they just the same old risks we've always had with data stored on the internet?

IoT 358

IoT Firmware Risk Manufacturing 358

Duo's Security Blog

JULY 8, 2021

When Popp’s AIDS ransomware was released, it didn’t rely on an internet connection, nor did it have the benefit of Satoshi’s brain child (which was still years away). Next, it would encrypt files on the victim’s system and deny access until they sent a $189 payment to a post office box in Panama.

Ransomware 96

Ransomware DNS Encryption Healthcare 96

Security Affairs

JULY 11, 2022

A large-scale phishing campaign is targeting Internet-end users in Brazil and Portugal since March 2022. Figure 2 presents an example of an SMS sent to Internet end-users during the ANUBIS social engineering wave. As observed, criminals are using the Let’s Encrypt CA to create valid HTTPs certificates. The Phishing template.

Phishing 100

Phishing Social Engineering Banking Engineering 100

Security Affairs

MARCH 4, 2019

” reads a blog post published by the firm. ” continues the blog post. Instead, the real IP address of the C2 is obfuscated with what is essentially an encryption algorithm. Experts pointed out that DGA is a double-edged sword because allows security researchers to analyze DNS and network traffic to enumerate bots.

DNS 83

DNS Banking Advertising Ransomware 83

The Last Watchdog

OCTOBER 19, 2021

The Internet as we know it operates within the service-oriented paradigm, which heavily favors providers over users. This makes Wildland something akin to a file-based Internet that you can browse and manage using Finder, Thunar, Konqueror or any other file browser of your choice.

Internet 223

Internet Internet Cryptocurrency Software 223

Cisco Security

MAY 17, 2021

I won’t go into all the details here (see this Umbrella blog for more) but we have radically simplified the deployment and management process. IPS helps organizations of any size meet compliance requirements and avoid a broad range of attacks found in encrypted and unencrypted internet traffic.

Firewall 74

Firewall Architecture Internet Internet 74

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

McAfee

DECEMBER 22, 2021

In this blog, we present an overview of how you can mitigate the risk of this vulnerability exploitation with McAfee Enterprise solutions. As we are writing this blog, on MVISION Insights there are 1,813 IOCs including MD5, SHA256, URL, IP, DOMAIN, HOSTNAME. Exploitation of Remote Services – T1210 (Lateral Movement).

Malware 98

Malware Risk Internet Internet 98

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. How bad is it to be a public figure (blog/YouTube) in 2020? This is true. The Government. So, probably not a win.

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VPN Risk Hacking Encryption 326

Cisco Security

MARCH 27, 2021

Shrink the DNS attack surface with Auth-DoH. In this analogy, the invisibility superpower is DNS over HTTPS (DoH). It’s a new protocol that encrypts the DNS request to keep bad actors from discovering or altering domain names or snooping on users’ internet destinations. My inspiration: Loki , the Marvel superhero.)

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DNS VPN Advertising Encryption 105

Security Affairs

DECEMBER 20, 2018

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. This way, it inspects all incoming and outgoing internet traffic. Technical Analysis. Temporary SQLite database with stealed credentials.

Banking 80

Banking Malware Internet Internet 80

Fox IT

JANUARY 12, 2021

These credentials are used in a credential stuffing or password spraying attack against the victim’s remote services, such as webmail or other internet reachable mail services. This specific document described how to access the internet facing company portal and the web-based VPN client into the company network. r = recurse subfolders.

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VPN Accountability Passwords DNS 68

Malwarebytes

OCTOBER 5, 2021

The Internet is a patchwork of hundreds of thousands of separate networks, called Autonomous Systems, that are stitched together with BGP. To route data across the Internet, Autonomous Systems need to know which IP addresses other Autonomous Systems either control or can route traffic to. Thankfully, it withstood the onslaught.

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DNS Internet Internet Mobile 144

Security Affairs

APRIL 9, 2019

LimeRAT is a powerful Remote Administration Tool publicly available to any internet user, it is an open-source project freely available on Github. Also, the attacker behind this sample leans on the Dynamic DNS service “warzonedns.com”, pointing to the 213.183.58[.10 10 IP address located in Russia. 1986[@gmail[.com”,

Malware 73

Malware Advertising DNS Antivirus 73

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 75

DNS Wireless Malware Firewall 75

Kali Linux

NOVEMBER 27, 2022

In Secure Kali Pi (2022) , the first blog post in the Raspberry Pi series, we set up a Raspberry Pi 4 with full disk encryption. If you are only interested in using the Raspberry Pi as a Wi-Fi client, you can stop here, and unmount everything like we did in our secure Kali Pi blog post. hcd usr/lib/firmware/brcm/BCM-0bb4-0306.hcd

Firmware 52

Firmware Wireless Passwords VPN 52

McAfee

SEPTEMBER 14, 2021

McAfee customers are protected from the malware/tools described in this blog. A more detailed blog with specific recommendations on using the McAfee portfolio and integrated partner solutions to defend against this attack can be found here. The hardcoded 208.67.222.222 resolves to a legitimate OpenDNS DNS server.

Malware 144

Malware DNS Accountability Manufacturing 144

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. It’s been a while since the last blog post, but we’ve observed some new activities by Roaming Mantis in 2021, and some changes in the Android Trojan Wroba.g (or

Phishing 86

Phishing DNS Mobile Malware 86

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. It’s the infrastructure of cybercrime; the infrastructure they use on the internet to deliver instructions. HYAS Protect is for the corporate environment.

DNS 101

DNS Malware Financial Services Architecture 101

Security Boulevard

AUGUST 12, 2022

The CA will issue challenges (DNS or HTTPS) requiring the agent to take an action that demonstrates control over said domain(s). Back in 2015, when Let’s Encrypt was was just emerging as a certificate-authority force, Josh Aas, the ISRG's executive director said that "Encryption should be the default for the web. What is ACME?

Encryption 52

Encryption DNS Backups Internet 52

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.). are you the person who enters, checks nothing and encrypts the first random machines? $1k?

VPN 97

VPN Accountability Ransomware Encryption 97

eSecurity Planet

FEBRUARY 8, 2021

. “Based on the analysis of the available data, the entire network of Lord & Taylor and 83 Saks Fifth Avenue locations have been compromised,” the firm wrote in a blog post examining the breach. Evolving threats. vSkimmer malware, a successor to Dexter, dates back to 2013. Errors to avoid.

Retail 52

Retail Encryption Malware Artificial Intelligence 52

Security Boulevard

APRIL 4, 2022

The Internet Security Research Group (ISRG) originally designed the ACME protocol for its own Let’s Encrypt certificate service. On September 15, 2021, the DNS records for acme-v01.api.letsencrypt.org You can read all about the key points of how ACME works in this blog. api.letsencrypt.org were removed. UTM Medium.

Encryption 52

Encryption Authentication DNS Risk 52

Security Affairs

FEBRUARY 19, 2019

An encrypted snippet of code, for instance, has high entropy associated. All the network traffic on the machine has now been monitored, but no connections to the Internet has been performed. The malware tries to resolve the DNS: sameerd.net. Beforehand, we simulate a fake Internet, and the malicious request was received.

Malware 80

Malware Phishing DNS Engineering 80

Cisco Security

AUGUST 28, 2023

XDR (eXtended Detection and Response) Integrations At Black Hat USA 2023, Cisco Secure was the official Mobile Device Management, DNS (Domain Name Service) and Malware Analysis Provider. SCA detected 289 alerts including Suspected Port Abuse, Internal Port Scanner, New Unusual DNS Resolver,and Protocol Violation (Geographic).

Wireless 61

Wireless DNS Mobile Technology 61

ForAllSecure

MARCH 24, 2021

Mashable: Move over Heartbleed and welcome to shell shock, the latest security threat to hit the internet. used vulnerabilities in sendmail and the fingerd protocol to construct unintentionally what would become the first internet worm. Really, never roll your own encryption. And it's a doozy program. What’s a worm?

Software 52

Software Passwords Internet Internet 52

ForAllSecure

MARCH 24, 2021

Mashable: Move over Heartbleed and welcome to shell shock, the latest security threat to hit the internet. used vulnerabilities in sendmail and the fingerd protocol to construct unintentionally what would become the first internet worm. Really, never roll your own encryption. And it's a doozy program. What’s a worm?

Software 52

Software Passwords Internet Internet 52

LRQA Nettitude Labs

APRIL 16, 2024

As such, the ECDSA signatures are encrypted before transmission in this context, so an attacker cannot get access to the signatures needed for this attack through passive network sniffing. The server then prompts the client for authentication, which is sent through this secure tunnel.

Authentication 69

Authentication DNS Software Encryption 69