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 126

Ransomware DNS Encryption Backups 126

SecureList

MARCH 10, 2021

After the user starts the program, it changes the DNS settings on the device so that all domains are resolved through the attackers’ servers, which, in turn, prevent users from accessing certain antivirus sites, such as Malwarebytes.com. Updater.exe code snippet containing the encrypted address. C:ProgramDataFlock.

DNS 142

DNS Antivirus Malware Encryption 142

Security Boulevard

JANUARY 17, 2024

Payload Ingress When delivering payloads to clients through RBI solutions, these solutions’ sandboxing and scanning capabilities present significant hurdles that must be overcome to achieve code execution in your target environment. This can be due to encryption or even size. We can swap our delivery vector to a ISO image file (.iso

DNS 62

DNS Penetration Testing Passwords Encryption 62

SecureWorld News

SEPTEMBER 7, 2023

"Preparing for a Post-Quantum World" is the topic of a panel presentation at SecureWorld Denver on September 19, and with good reason. Quantum computing poses a potential threat to current cybersecurity practices, which are based on encryption algorithms that can be broken by quantum computers.

Encryption 86

Encryption Technology Risk Architecture 86

Malwarebytes

JUNE 5, 2022

” But for all the valid discussion about online anonymity, encryption, and privacy, Tor has an entirely different value proposition for people who build and maintain websites, and that is one of security. “There are so many security risks up the stack,” Muffett said.

Internet 101

Internet Internet DNS Surveillance 101

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 277

DNS Wireless Risk Banking 277

Security Affairs

JULY 11, 2022

Figure 2 presents an example of an SMS sent to Internet end-users during the ANUBIS social engineering wave. 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.

Phishing 100

Phishing Social Engineering Banking Engineering 100

SecureList

OCTOBER 25, 2023

It comes equipped with a built-in TOR network tunnel for communication with command servers, along with update and delivery functionality through trusted services such as GitLab, GitHub, and Bitbucket, all using custom encrypted archives. The action of these tasks is run of PowerShell loader script.

Malware 107

Malware DNS Encryption Cryptocurrency 107

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 79

IoT Hacking DNS Authentication 79

Security Affairs

OCTOBER 20, 2021

” The MSI package first removes registry keys associated with the old Purple Fox installations if any are present, then it replaces the components of the malware with new ones. . “The goal is to install the MSI package as an admin without any user interaction.” ” continues the analysis.

Encryption 90

Encryption DNS Architecture Firewall 90

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. From 2018 to present, Aoqin Dragon has also been observed using a fake removable device as an initial infection vector. The APT has improved its malicious code over the time to avoid detection.

Malware 86

Malware DNS Encryption Education 86

Security Affairs

AUGUST 10, 2020

Pavel explained that attackers could also collect information even when the traffic is encrypted. The analysis of DNS could reveal the user’s Internet browsing history while the analysis of TLS certificates could allow fingerprinting the servers the user connected. ” reads the notification published by the FBI. “The

Internet 93

Internet Internet Advertising Encryption 93

Krebs on Security

FEBRUARY 24, 2023

The Mylobot malware includes more than 1,000 hard-coded and encrypted domain names, any one of which can be registered and used as control networks for the infected hosts. 5, 2014 , but historic DNS records show BHproxies[.]com “This number is probably higher, but we don’t have a full visibility of the botnet. com on Mar.

Accountability 220

Accountability Advertising Marketing Malware 220

Pen Test Partners

SEPTEMBER 13, 2023

At present the scheme is running against v3.2.1. 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., In March 2022, the PCI Council released the long-anticipated v4.0.

Authentication 52

Authentication Passwords Media Encryption 52

Troy Hunt

SEPTEMBER 17, 2020

I want a "secure by default" internet with all the things encrypted all the time such that people can move freely between networks without ever needing to care about who manages them or what they're doing with them. Now let's try the mobile app: What's the encryption story there? " It means "this is private."

VPN 359

VPN Phishing DNS Encryption 359

SecureList

SEPTEMBER 21, 2023

Brute-force attacks on services that use SSH, a more advanced protocol that encrypts traffic, can yield similar outcomes. User files were encrypted, with the device’s interface displaying a ransom note demanding payment of 0.03 DNS changer Malicious actors may use IoT devices to target users who connect to them.

IoT 86

IoT DDOS Passwords Malware 86

Security Affairs

JULY 23, 2019

Attackers also noticed that systems infected with the above two families were also targeted with the RoyalDNS malware that uses DNS to communicate with the C&C server. Once executed the command the backdoor returns output through DNS. “The Ke3chang APT group (a.k.a.

DNS 87

DNS Malware Advertising Manufacturing 87

Troy Hunt

NOVEMBER 25, 2020

— Troy Hunt (@troyhunt) November 23, 2020 Clearly it was never TP-Link's intention for people to use their plugs in the fashion HA presently is and I'll talk more about why HA does this in the next section of this post. For some reason, the Shelly on my garage door is making a DNS request for api.shelly.cloud once every second!

IoT 358

IoT Firmware Risk Manufacturing 358

CyberSecurity Insiders

APRIL 6, 2023

GoDaddy, Network Solutions) DNS service (E.g., That might mean time-bounding their logical access, and it does mean escorting them while they are present. If your staff has access to customer premises where PCI-sensitive data is present, (either physically or logically) they must conduct themselves in like manner. PCI DSS v4.0

Accountability 57

Accountability DNS DDOS VPN 57

SecureList

JUNE 2, 2022

On January 27, we delivered a joint presentation with TeamT5 and ITOCHU Corporation at Japan Security Analyst Conference (JSAC) to provide an update on the actor’s latest activities. Layout of the encrypted data. Packets exchanged with the C2 server contain a header (described in the next table) followed by AES-encrypted data.

Malware 113

Malware Encryption Social Engineering Telecommunications 113

Security Affairs

DECEMBER 7, 2019

Back to the present, the threat intelligence firm Anomali reported a new wave of attacks that started in Mid-October 2019 and that targeted individuals and entities in Ukraine, including diplomats, government officials and employees, journalists, law enforcement, military officials and personnel, NGOs, and the Ministry of Foreign Affairs.

Government 57

Government Advertising Media DNS 57

SiteLock

AUGUST 27, 2021

An SSL Certificate is used to establish a secure encrypted connection between a web browser and a web server. Joe could also present a CAPTCHA challenge to the visitors on his site. 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

SC Magazine

MAY 19, 2021

Visitors crowd a cloud computing presentation at the CeBIT technology trade fair on March 2, 2011 in Hanover, Germany. That could be by purging un-needed data, encryption, archiving, anonymizing data, basically doing something different,” Halota said. Sean Gallup/Getty Images). Some CSPs have dedicated links,” Vickers said.

Firewall 57

Firewall Cloud Migration Architecture Information Security 57

SecureList

JANUARY 13, 2022

If the document was opened offline or the remote content was blocked, it presents some legitimate content, likely scraped or stolen from another party. After sending a beacon to the C2 server, the malware collects general system information, sending it after AES encryption. ecf75bec770edcd89a3c16d3c4edde1a Abies VC Presentation (1).docx.

Cryptocurrency 127

Cryptocurrency Malware Accountability Banking 127

Security Affairs

AUGUST 7, 2019

Security researcher Marco Ramilli presents a comparative analysis of attacks techniques adopted by the Iran-Linked OilRig APT group. T1094) mainly developed using DNS resolutions (which is actually one of the main characteristic of the attacker group). and more personal thoughts.

Computers and Electronics 80

Computers and Electronics Penetration Testing DNS Phishing 80

Pen Test Partners

DECEMBER 11, 2023

The malicious server will proxy the traffic and present the victim with the legitimate sign on journey. Therefore, before repacking the credentials back up in TLS encryption, the proxy server has full sight of them from the victim. From the victims perspective the only element that is invalid is the domain.

Phishing 66

Phishing Password Management Authentication Passwords 66

Fox IT

JUNE 2, 2020

Before proceeding to the technical analysis part, it is worth mentioning that the strings are not encrypted. Any received files from the command and control server are sent in an encrypted format. Both of these methods are also present in the latest Team9 backdoor variants. Similar payload decryption technique.

Malware 48

Malware DNS Architecture Backups 48

McAfee

DECEMBER 22, 2021

Should the vulnerability be present, an attacker might run arbitrary code by forcing the application or server to log a specific string. In this blog, we present an overview of how you can mitigate the risk of this vulnerability exploitation with McAfee Enterprise solutions. CVE-2021-44228 – Apache Releases Log4j Version 2.15.0

Malware 98

Malware Risk Internet Internet 98

Kali Linux

FEBRUARY 13, 2022

Moreover, the functions, theme and layout of the boot menu present in our ISO images have been improved. This update includes new wallpapers for desktop, login , and boot displays , in addition to a refreshed installer theme which you may have seen if you have recently updated. With these changes, it makes them consistent throughout.

DNS 52

DNS Architecture Media Encryption 52

Fox IT

JANUARY 12, 2021

The adversary compresses and encrypts the data by using WinRAR from the command-line. hp<password> = encrypt both file data and headers with password. We observed the use of Cobalt Strike’s C2 protocol encapsulated in DNS by the adversary in 2017 and 2018. The DNS-responses weren’t logged. r = recurse subfolders.

VPN 68

VPN Accountability Passwords DNS 68

eSecurity Planet

MAY 23, 2023

SPF deploys within the Domain Name Service (DNS) records with the organization’s domain hosting provider. Email-receiving servers check the email header for the sending domain and then perform a DNS lookup to see if an SPF file exists that matches the sending domain.

DNS 95

DNS Phishing Authentication Internet 95

eSecurity Planet

JUNE 8, 2023

We will present these options in two categories: a priority tier and an advanced capability tier. It can be time consuming to establish these protocols on an organization’s DNS servers, but doing so will provide two key benefits.

Firewall 75

Firewall DNS Authentication Malware 75

eSecurity Planet

MAY 28, 2021

We look at three RSAC 2021 sessions and some of the most daunting vulnerabilities presented by the SANS Institute, Cybersecurity and Infrastructure Security Agency (CISA), and Varonis Systems. The SANS Institute presentation, “ The Five Most Dangerous New Attack Techniques ,” is an RSAC staple by this point.

Software 112

Software Firmware DNS VPN 112

McAfee

SEPTEMBER 29, 2021

Security investigators will use a multitude of data, threat intelligence, log files, DNS activity, and much more to identify the exact nature of the potential breach and determine the best response playbook to use. Once again, the numbers can vary substantially depending on the organization and industry.

DNS 67

DNS Manufacturing Data breaches Risk 67

SecureList

AUGUST 30, 2023

When the malicious PDF file is opened with the Trojanized PDF reader, the victim is presented with the same malware mentioned above, which collects and reports the victim’s information, retrieves commands and executes them using pipe communication mechanisms. The malware, which we call Minas , is a miner.

Malware 73

Malware Spyware Cryptocurrency Government 73

Security Boulevard

OCTOBER 21, 2022

dll by iterating the InMemoryOrderModuleList linked list present in the Process Environment Block (PEB). dll is enumerated, WarHawk then decrypts a set of API &amp; DLL names using a String Decryption Routine which takes the Encrypted Hex Bytes as an input and then subtracts each byte with the Key: "0x42" in order to decrypt the string.

DNS 52

DNS Phishing Malware Government 52

Security Affairs

JULY 14, 2021

We have observed malicious binaries use openssl with base64, Advanced Encryption Standard (AES), CBC (Cipher Block Chaining) to thwart security scanners in the format as shown below: openssl enc -aes-256-cbc -d -A -base64 -pass pass:<> Curl. Bash scripts invoking encrypted Zip file. Bash scripts decoding an encrypted blob.

Adware 121

Adware Encryption Malware Passwords 121