Krebs on Security

APRIL 4, 2024

For example, this account at Medium has authored more than a dozen blog posts in the past year singing the praises of Tornote as a secure, self-destructing messaging service. A review of the passive DNS records tied to this address shows that apart from subdomains dedicated to tornote[.]io, io seem like a legitimate website.

Phishing 214

Phishing Cryptocurrency DDOS Internet 214

Cisco Security

MARCH 16, 2021

In fact, 63% of threats detected by Cisco Stealthwatch in 2019 were in encrypted traffic. In this blog I’ll describe two recent privacy advances—DNS over HTTPS (DoH) and QUIC—and what we’re doing to maintain visibility. Keeping your destination private: DNS over HTTPS. Until recently, DNS messages were sent in the clear.

Encryption 85

Encryption DNS Threat Detection Internet 85

Cisco Security

AUGUST 12, 2021

For several years, Cisco Secure provided DNS visibility and architecture intelligence with Cisco Umbrella and Cisco Umbrella Investigate ; and automated malware analysis and threat intelligence with Cisco Secure Malware Analytics (Threat Grid) , backed by Cisco Talos Intelligence and Cisco SecureX. DNS traffic at Record Low.

DNS 141

DNS Firewall Phishing Mobile 141

Security Boulevard

MAY 10, 2023

It was the summer of 2019, and I spent an hour walking around downtown Los Altos in Silicon Valley with a serial entrepreneur and investor. HYAS has published multiple internal studies demonstrating how powerful this data actually is in various HYAS blogs , but of course the ultimate proof is third-party validation.

DNS 69

DNS CISO Architecture Data privacy 69

Security Affairs

JULY 13, 2019

The campaign uncovered by Avast aimed at silently modifying the Brazilian users’ Domain Name System (DNS) settings to redirect victims to malicious websites mimicking legitimate ones. ” reads a blog post published by Avast. Most recently, Netflix became a popular domain for DNS hijackers.”

DNS 77

DNS Passwords Advertising Banking 77

Krebs on Security

MARCH 2, 2020

HYAS said it quickly notified the French national computer emergency team and the FBI about its findings, which pointed to a dynamic domain name system (DNS) provider on which the purveyors of this attack campaign relied for their various malware servers. ‘FATAL’ ERROR.

DNS 256

DNS Penetration Testing Malware Hacking 256

Security Boulevard

JANUARY 30, 2024

Prior blog posts here and here contain additional background and usage examples. If the BOF is used to query logged on users on localhost, the fully qualified computer DNS name from GetComputerNameExW is used. If that fails, the DNS suffix (e.g., REDANIA.LOCAL ) will be converted to a distinguished name (e.g.,

DNS 64

DNS Data collection Accountability 64

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.

Ransomware 134

Ransomware DNS Encryption Backups 134

Security Affairs

SEPTEMBER 8, 2019

Hi folk, let me inform you that I suspended the newsletter service, anyway I’ll continue to provide you a list of published posts every week through the blog. Cisco addresses CVE-2019-12643 critical flaw in virtual Service Container for IOS XE. Cyber Defense Magazine – September 2019 has arrived. Once again thank you!

IoT 76

IoT Data breaches DNS Advertising 76

Webroot

SEPTEMBER 7, 2023

How to protect your data A sophisticated, layered security strategy will already have prevention tools like endpoint and DNS protection in place as well as security awareness training to stop threats before they reach your network. The post Building a Cyber Resilient Business: The Protection Layer appeared first on Webroot Blog.

Encryption 88

Encryption Cyber Insurance Cybercrime Phishing 88

Krebs on Security

NOVEMBER 21, 2020

2019 that wasn’t discovered until April 2020. “A domain hosting provider ‘GoDaddy’ that manages one of our core domain names incorrectly transferred control of the account and domain to a malicious actor,” Liquid CEO Kayamori said in a blog post. This latest campaign appears to have begun on or around Nov.

Cryptocurrency 363

Cryptocurrency VPN Scams Social Engineering 363

Security Affairs

JUNE 6, 2019

This time is the APT34 Jason – Exchange Mail BF project to be leaked by Lab Dookhtegan on June 3 2019. Although there was information about APT34 prior to 2019, a series of leaks on the website Telegram by an individual named “ Lab Dookhtegan ”, including Jason project, exposed many names and activities of the organization.

Computers and Electronics 83

Computers and Electronics Penetration Testing DNS Passwords 83

McAfee

FEBRUARY 4, 2021

This blog is part of our SOCwise series where we’ll be digging into all things related to SecOps from a practitioner’s point of view, helping us enable defenders to both build context and confidence in what they do. . And they didn’t even give it a DNS look up until almost a year later.

DNS 102

DNS Firewall Accountability Technology 102

Fox IT

JANUARY 12, 2021

NCC Group and Fox-IT observed this threat actor during various incident response engagements performed between October 2019 until April 2020. The more recent intrusions took place in 2019 at companies in the aviation industry. observed Q2 2017 Cobalt Strike v3.12, observed Q3 2018 Cobalt Strike v3.14, observed Q2 2019.

VPN 68

VPN Accountability Passwords DNS 68

Security Affairs

AUGUST 7, 2019

group_d : from March 2019 to August 2019 The evaluation process would take care of the following Techniques: Delivery , Exploit , Install and Command. T1094) mainly developed using DNS resolutions (which is actually one of the main characteristic of the attacker group). group_a : from 2016 to August 2017 2.

Computers and Electronics 81

Computers and Electronics Penetration Testing DNS Phishing 81

Cisco Security

MAY 12, 2022

Creation dates are going back as early as February 2019 and have a changing pattern for the registrant email. 02/2019-06/2020. Therefore, DNS and outgoing web traffic is crucial for its detection. For your convenience, here’s a summary of the intelligence we developed in this blog post: Aliases. 08/2020-02/2021,02/2022.

Malware 106

Malware DNS DDOS Phishing 106

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. Conclusion.

Malware 144

Malware DNS Accountability Manufacturing 144

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 79

DNS Wireless Malware Firewall 79

eSecurity Planet

DECEMBER 3, 2021

lazydocker : A simple terminal UI for both docker and docker-compose : [link] pic.twitter.com/HsK17rzg8m — Binni Shah (@binitamshah) July 1, 2019. Krebs wrote for The Washington Post between 1995 and 2009 before launching his current blog KrebsOnSecurity.com. — Jason Haddix (@Jhaddix) July 27, 2019.

Accountability 134

Accountability Cybersecurity Penetration Testing InfoSec 134

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 89

Malware DNS Government Software 89

Security Affairs

NOVEMBER 12, 2019

The domain validtree.com is registered through namecheap.com on 2017-12-07T15:55:27Z but recently renewed on 2019-10-16T05:35:18Z. Building a re-directors or proxy chains is quite useful for attackers in order to evade Intrusion Prevention Systems and/or protections infrastructures based upon IPs or DNS blocks. net http[://com-mk84.net.

Cybercrime 42

Cybercrime Computers and Electronics Penetration Testing Malware 42

Security Affairs

MAY 2, 2019

Indeed we might observe a File-based command and control (a quite unusual solution) structure, a VBS launcher, a PowerShell Payload and a covert channel over DNS engine. According to Duo, “ OilRig delivered Trojans that use DNS tunneling for command and control in attacks since at least May 2016. Source: MISP Project ).

DNS 90

DNS Computers and Electronics Penetration Testing Government 90

Google Security

DECEMBER 1, 2022

From 2019 to 2022 the annual number of memory safety vulnerabilities dropped from 223 down to 85. From 2019 to 2022 it has dropped from 76% down to 35% of Android’s total vulnerabilities. This drop coincides with a shift in programming language usage away from memory unsafe languages. There are approximately 1.5

DNS 145

DNS Accountability Firmware Risk 145

Malwarebytes

APRIL 6, 2023

Act V: OneView to Rule Them All (2019) 2019 saw the introduction of OneView, a multitenant console designed for Managed Service Providers (MSPs). Malwarebytes added a DNS/Web Content Filtering Module and a Cloud Storage Scanning Module to the mix, rounding off a delectable buffet of cybersecurity enhancements.

Cybersecurity 70

Cybersecurity Malware Cyber threats Small Business 70

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 81

Phishing DNS Mobile Malware 81

SecureList

FEBRUARY 16, 2021

The DTLS (Datagram Transport Layer Security) protocol is used to establish secure connections over UDP, through which most DNS queries, as well as audio and video traffic, are sent. Comparative number of DDoS attacks, Q3/Q4 2020 and Q4 2019; data for Q4 2019 is taken as 100% ( download ). Statistics. Methodology.

DDOS 128

DDOS Cryptocurrency Marketing Internet 128

Security Affairs

FEBRUARY 19, 2019

In detail, the first wave observed was on February 12th, 2019. The malware tries to resolve the DNS: sameerd.net. As shown, the DNS has not been resolved. The domain seems to be offline, but it was possible to get some indicators on it on Shodan and with the last update on 2019-02-12. Figure 3: Passive DNS replication.

Malware 79

Malware Phishing DNS Engineering 79

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 63

Wireless DNS Mobile Technology 63

CyberSecurity Insiders

APRIL 30, 2021

million attacks reported in the first half of 2020 – an increase of more than 250% compared to the same period in 2019. In this week’s blog post, we’ll take a deeper look at the recent growth in DDoS attacks and the threat they could pose for your organization. DDoS attacks are on the rise, with over 4.83

DDOS 144

DDOS Cyber Attacks DNS Threat Detection 144

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). For that reason, having a backup CA is always a good idea,” he explains in a blog of his. . It was originally published on August 8, 2019. ) . Less technically speaking, ACME: . Related posts.

Encryption 52

Encryption DNS Backups Internet 52

Security Affairs

JUNE 4, 2019

Moreover, querying the services behind the latest associated DNS record the host responds with “403 Forbidden” message too, indicating the infrastructure may still be operative. Information about C2 and relative DNS. Technical details, including IoCs and Yara Rules, are available in the analysis published in the Yoroi blog.

Passwords 65

Passwords DNS Engineering Malware 65

SecureList

JUNE 15, 2022

Revenue: 8kk+$ (information is current as of 2019). There is access data to 2-3 domains of that network, the total number is 3-4, I don’t know exactly, see the screenshot below for DNS servers! Blackmailer blog: auction price of stolen data. Blackmailer blog: auction price of stolen data along with published data.

VPN 89

VPN Accountability Ransomware Encryption 89

Cisco Security

AUGUST 29, 2022

In part one of this issue of our Black Hat USA NOC (Network Operations Center) blog, you will find: Adapt and Overcome. I hope you will read on, to learn more lessons learned about the network and the part two blog about Cisco Secure in the NOC. As mentioned elsewhere in this blog, this was a conference of APIs.

Engineering 76

Engineering Wireless Malware DNS 76

Security Boulevard

MAY 14, 2022

N Do not try to have the host name of your target DC attempted to perform a reverse DNS on the IP to match them. This is needed when the Domain Controller doesn’t have a valid reverse DNS record from your standpoint on the network and you are using Kerberos. Ropnop’s Talk at Troopers 2019. LDAP Search Filters.

Passwords 52

Passwords Accountability Authentication DNS 52

SecureList

APRIL 27, 2021

One of the suspected FinFly Web servers was active for more than a year between October 2019 and December 2020. We investigated a long-running espionage campaign, dubbed A41APT, targeting multiple industries, including the Japanese manufacturing industry and its overseas bases, which has been active since March 2019.

Malware 138

Malware Spyware Government Social Engineering 138

SecureList

MAY 27, 2022

Late last year, we became aware of a UEFI firmware-level compromise through logs from our firmware scanner (integrated into Kaspersky products at the start of 2019). The group uses various malware families, including Wroba, and attack methods that include phishing, mining, smishing and DNS poisoning.

Phishing 103

Phishing Spyware Firmware Malware 103

SecureList

APRIL 27, 2022

On March 1, ESET published a blog post related to wipers used in Ukraine and to the ongoing conflict: in addition to HermeticWiper, this post introduced IsaacWiper, used to target specific machines previously compromised with another remote administration tool named RemCom, commonly used by attackers for lateral movement within compromised networks.

Malware 130

Malware Firmware Government Phishing 130