Malwarebytes

JUNE 15, 2022

Symbiote, a new “nearly impossible to detect” Linux malware, targeted financial sectors in Latin America—and the threat actors behind it might have links to Brazil. And this is what sets Symbiote apart from other Linux malware. Symbiote’s evasion techniques (Source: Blackberry Threat Vector Blog ).

Malware 61

Malware DNS Banking Engineering 61

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

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 140

Ransomware DNS Encryption Backups 140

Webroot

SEPTEMBER 7, 2023

Depending on the size of the business, one-third to two-thirds of businesses suffer malware attacks in any given year. Tools like Webroot’s Advanced Email Threat Protection analyze the links and attachments in messages to detect malware and keep your systems secure against threats. In 2022, American businesses lost $10.3

Encryption 88

Encryption Cyber Insurance Cybercrime Phishing 88

Security Affairs

JUNE 12, 2022

sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”). 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. Pierluigi Paganini.

Ransomware 116

Ransomware DNS Cybercrime Hacking 116

Security Affairs

MAY 15, 2023

“Lancefly’s custom malware, which we have dubbed Merdoor, is a powerful backdoor that appears to have existed since 2018.” Lancefly APT used a multiple non-malware techniques for credential theft on victim machines, including: PowerShell was used to launch rundll32.exe ” reads the analysis published by Symantec.

Encryption 83

Encryption DNS Phishing Malware 83

Security Affairs

JUNE 9, 2022

Other techniques employed by the APT group include DLL hijacking, Themida-packed files, and DNS tunneling to evade post-compromise detection. Luring users into double-clicking a fake Anti-Virus to execute malware in the victim’s host. The malware sets the auto start function with the value “EverNoteTrayUService”.

Malware 85

Malware DNS Encryption Education 85

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

SiteLock

AUGUST 27, 2021

Cybercriminals are constantly crawling the web for targets, and they’ll often go after websites you might not expect, such as a vegan cooking blog. Abby’s Flower Shop Delivers Fresh Malware to Your Door. One day, much to Abby’s surprise, she was notified by her hosting provider that her website was suspended due to malware.

Hacking 98

Hacking DDOS eCommerce Firewall 98

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

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

MAY 17, 2023

Most of these steps could’ve been blocked with the aid of DNS protection. It would be easy to chalk up this increase to the development and introduction of new advanced types of malware, but the surprising fact is that many of the same threats and exploits used in data breaches in 2013 are still being successfully employed 10 years later.

Data breaches 52

Data breaches DNS Malware Phishing 52

Security Affairs

JUNE 20, 2022

sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”). 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.

Spyware 71

Spyware DNS Surveillance Ransomware 71

Security Boulevard

MARCH 3, 2023

One particularly novel variation employs KoiVM virtualization — which allows it to obfuscate the code and defeat static analysis, thus making manual malware analysis challenging and time consuming. It generates encrypted traffic to multiple domains hosted on different IP addresses through different hosting companies.

Phishing 59

Phishing DNS Malware Antivirus 59

Fox IT

JUNE 2, 2020

Publicly discovered in late April 2020, the Team9 malware family (also known as ‘Bazar [ 1 ]’) appears to be a new malware being developed by the group behind Trickbot. Even though the development of the malware appears to be recent, the developers have already developed two components with rich functionality.

Malware 48

Malware DNS Architecture Backups 48

Security Affairs

APRIL 1, 2019

The popular expert unixfreaxjp analyzed a new China ELF DDoS’er malware tracked as “Linux/DDoSMan” that evolves from the Elknot malware to deliver new ELF bot. But what kind of malware is this Elknot Trojan? On the MMD blog. This malware is an update and reuse from the Elknot’s malware source code.

DDOS 85

DDOS Malware Encryption Penetration Testing 85

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

Duo's Security Blog

JULY 8, 2021

Computers and networks have been dealing with malware in one form or another for decades. 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. From there the malware found its way onto multiple systems. Now, extortion is nothing new.

Ransomware 99

Ransomware DNS Encryption Healthcare 99

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

Security Affairs

JULY 11, 2022

Operators can easily make this configuration through an interface that uses the CloudFlare API for configuring new DNS zones. As observed, criminals are using the Let’s Encrypt CA to create valid HTTPs certificates. The ANUBIS network phishing campaigns are masked through the Cloudflare CDN. The Phishing template. Pierluigi Paganini.

Phishing 100

Phishing Social Engineering Banking Engineering 100

Security Affairs

MARCH 4, 2019

Necurs botnet is currently the second largest spam botnet , it has been active since at least 2012 and was involved in massive campaigns spreading malware such as the Locky ransomware , the Scarab ransomware , and the Dridex banking Trojan. ” reads a blog post published by the firm. ” continues the blog post.

DNS 80

DNS Banking Advertising Ransomware 80

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

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. Registry key created by malware. Figure 2: Complete malware implant folder. Example of execution of the malware. As shown in Fig.3,

Banking 75

Banking Malware Internet Internet 75

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

APRIL 9, 2019

Too many times turned into fully-featured malware implants by unethical hackers and cyber criminals. Exploring the malware code, we detected multiple evidence indication of the possible belonging malware family: LimeRAT. Figure 9: The persistence mechanisms of the malware. Technical Analysis. C2 retrieval.

Malware 72

Malware Advertising DNS Antivirus 72

Security Affairs

AUGUST 7, 2019

T1388) , from group_b to group_d time frames OilRig used real Compromised User Accountsextracted by Malware (rif. T1094) mainly developed using DNS resolutions (which is actually one of the main characteristic of the attacker group). Indeed on group_a the attacker mostly used to exploit Exposed Infrastructure (rif.

Computers and Electronics 80

Computers and Electronics Penetration Testing DNS Phishing 80

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). We hypothesize that the general aim is to provide operators with “full-spectrum malware” in order to evade security products.

Malware 88

Malware DNS Government Software 88

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 75

Firewall Architecture Internet Internet 75

Security Boulevard

OCTOBER 21, 2022

Recently, Zscaler ThreatLabz discovered a new malware being used by the SideWinder APT threat group in campaigns targeting Pakistan: a backdoor we’ve called “WarHawk.” In this case there are multiple payloads which are downloaded and executed by the WarHawk backdoor which are analyzed later in the blog. Command Execution Module.

DNS 52

DNS Phishing Malware Government 52

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 process flow diagram below shown how the malware works.

Malware 78

Malware Phishing DNS Engineering 78

McAfee

SEPTEMBER 14, 2021

A special thanks to our Professional Services’ IR team, ShadowServer , for historical context on C2 domains, and Thomas Roccia /Leandro Velasco for malware analysis support. McAfee customers are protected from the malware/tools described in this blog. Executive Summary. IOCs that could be shared are at the end of this document.

Malware 144

Malware DNS Accountability Manufacturing 144

Fox IT

JANUARY 12, 2021

This research project covers the fingerprinting of Cobalt Strike servers and is described in Fox-IT blog “ Identifying Cobalt Strike team servers in the wild ”. The adversary compresses and encrypts the data by using WinRAR from the command-line. hp<password> = encrypt both file data and headers with password.

VPN 68

VPN Accountability Passwords DNS 68

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

The first malicious update was pushed to SolarWinds users in March 2020, and it contained a malware named Sunburst. One month later, we discovered interesting similarities between Sunburst and Kazuar , another malware family linked to Turla by Palo Alto. DNS hijacking. December 28, 2020 to January 13, 2021. mail.invest.

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

SecureList

FEBRUARY 7, 2022

Roaming Mantis is a malicious campaign that targets Android devices and spreads mobile malware via smishing. 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, part III. Roaming Mantis, part III.

Phishing 80

Phishing DNS Mobile Malware 80

Webroot

JUNE 21, 2021

It may be as simple as the deployment of antivirus plus backup and recovery applications for your end users, or a more complex approach with security operations center (SOC) tools or managed response solutions coupled with network security tools such as DNS and Web filtering, network and endpoint firewalls, VPNs, backup and recovery and others.

Backups 119

Backups DNS Ransomware Antivirus 119