Security Affairs

AUGUST 20, 2021

Mozi is an IoT botnet that borrows the code from Mirai variants and the Gafgyt malware , it appeared on the threat landscape in late 2019. According to the researchers, in the last months of 2019, the botnet was mainly involved in DDoS attacks. .”

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IoT DNS Manufacturing Firmware 103

Security Affairs

MARCH 20, 2020

Most of APT28s’ campaigns leveraged spear-phishing and malware-based attacks, the recent mass scanning activity represents a change in the modus operandi of the group. “This report aims to shed light on some of Pawn Storm’s attacks that did not use malware in the initial stages. ” continues the report.

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Phishing Accountability Advertising DNS 140

Cisco Security

MARCH 16, 2021

Hiding internet activity strengthens privacy—but also makes it easier for bad actors to infiltrate the network. 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.

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Encryption DNS Threat Detection Internet 85

Security Affairs

DECEMBER 19, 2022

The botnet was involved in stealing users’ credentials and data, mining cryptocurrencies abusing victims’ resources, and setting up proxies to funnel other people’s internet traffic through infected machines and routers. Botnet operators use to spread the malware via cracked or pirated software and pay-per-install (PPI) schemes.

DNS 102

DNS Antivirus Cryptocurrency Software 102

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. “ Malware then guesses routers’ passwords , which new research from Avast shows are often weak. ” reads a blog post published by Avast.

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DNS Passwords Advertising Banking 78

Security Affairs

OCTOBER 28, 2020

Microsoft announced to have taken down 62 of the original 69 TrickBot C&C servers, seven servers that could not be brought down last week were Internet of Things (IoT) devices. At the end of 2019, researchers spotted a new TrickBot backdoor framework dubbed Anchor that was using the DNS protocol for C2 communications. .”

DNS 105

DNS Banking Advertising IoT 105

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. BitSight researchers found significant overlap in the Internet addresses used by those domains and a domain called BHproxies[.]com. million from private investors.

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Accountability Advertising Marketing Malware 236

Krebs on Security

JULY 18, 2022

For the past seven years, an online service known as 911 has sold access to hundreds of thousands of Microsoft Windows computers daily, allowing customers to route their Internet traffic through PCs in virtually any country or city around the globe — but predominantly in the United States. THE INTERNET NEVER FORGETS.

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VPN Computers and Electronics Antivirus Software 312

SecureList

JUNE 5, 2023

Satacom downloader, also known as LegionLoader, is a renowned malware family that emerged in 2019. It is known to use the technique of querying DNS servers to obtain the base64-encoded URL in order to receive the next stage of another malware family currently distributed by Satacom.

Cryptocurrency 88

Cryptocurrency DNS Malware Encryption 88

Security Affairs

DECEMBER 12, 2019

. “To compromise targeted networks, GALLIUM target unpatched internet-facing services using publicly available exploits and have been known to target vulnerabilities in WildFly/JBoss.” ” The GALLIUM threat actor is active, but its activity was more intense between 2018 and mid-2019. ” continues the analysis.

Telecommunications 71

Telecommunications DNS Malware Advertising 71

Security Affairs

JULY 30, 2019

Even a device that is reaching outbound to the internet could be attacked and taken over. “ According to Shodan , there are over 808K SonicWall firewalls connected to the Internet, representing a similar number of networks that these devices defend.” ” reads the report published by Armis Labs.

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Risk IoT Firewall DNS 76

Security Affairs

JULY 15, 2020

on the CVSS scale and affects Windows Server versions 2003 to 2019. Today we released an update for CVE-2020-1350 , a Critical Remote Code Execution (RCE) vulnerability in Windows DNS Server that is classified as a ‘wormable’ vulnerability and has a CVSS base score of 10.0. Non-Microsoft DNS Servers are not affected.”

DNS 61

DNS Advertising Engineering Internet 61

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. Defense in the real world.

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Ransomware DNS Encryption Backups 131

Security Affairs

NOVEMBER 1, 2021

The number of infected devices is impressive, on 2019-11-30 a trusted security partner in the US informed Qihoo 360’s Netlab Cybersecurity reported to have observed 1,962,308 unique daily active IPs from the Pink botnet targeting its systems. According to the experts, Pink is the largest botnet they have observed in the last six years.

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Architecture DDOS Advertising Firmware 129

Security Affairs

OCTOBER 5, 2020

The experts are monitoring the Mirai-based botnet since November 2019 and observed it exploiting two Tenda router 0-day vulnerabilities to spread a Remote Access Trojan (RAT). ” When the botnet was first detected in 2019, experts noticed it was exploiting the Tenda zero-day flaw tracked as CVE-2020-10987.

IoT 142

IoT Firmware DNS Advertising 142

Security Affairs

OCTOBER 29, 2020

In early 2019, researchers spotted a new TrickBot backdoor framework dubbed Anchor that was using the anchor_dns tool for abusing the DNS protocol for C2 communications. TrickBot is a popular banking Trojan that has been around since October 2016, its authors have continuously upgraded it by implementing new features.

Healthcare 144

Healthcare Ransomware Cybercrime Advertising 144

Security Affairs

OCTOBER 20, 2021

CrowdStrike researchers reported that at least 13 telecommunication companies were compromised by since 2019. ” The hacking group initially compromised one of the telecommunication companies by leveraging external DNS (eDNS) servers which are part of the General Packet Radio Service (GPRS) network. .

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Telecommunications Mobile Hacking Architecture 121

Security Affairs

NOVEMBER 21, 2019

“Fast forwarded to October 11, 2019, our Anglerfish honeypot captured another suspicious ELF sample, and it turned out to be the Downloader of the previous suspicious ELF sample.” It allows users using web browsers to set up user accounts, Apache, DNS, file sharing and much more. SecurityAffairs – Roboto botnet , malware).

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DDOS System Administration Advertising DNS 83

SecureList

DECEMBER 8, 2022

Just to clarify, the subheading isn’t a normal quote, but a message that Janicab malware attempted to decode in its newest use of YouTube dead-drop resolvers (DDRs). Janicab was first introduced in 2013 as malware able to run on MacOS and Windows operating systems. Janicab 1.2.9a. Janicab 1.1.2. LNK files structure comparison.

Malware 110

Malware DNS Engineering Internet 110

Security Affairs

APRIL 27, 2020

The VictoryGate botnet is active since at least May 2019, the botnet is more active in Latin America the most. However, all the original files were replaced by a copy of the malware. The VictoryGate botnet used only subdomains registered at the dynamic DNS provider No-IP to control infected devices. ” ESET concludes.

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Advertising DNS Malware Hacking 106

SecureList

OCTOBER 3, 2022

Notably, no other intelligence was shared until 2021, which led us to speculate on a possible shift by the threat actor to more fileless/LOLBINS techniques, and the use of known/common offensive tools publicly available on the internet that allows them to blend in. Display DNS resolver cache. Contact us: intelreports@kaspersky.com.

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Backups Malware Engineering Passwords 112

Security Affairs

SEPTEMBER 8, 2019

Cisco addresses CVE-2019-12643 critical flaw in virtual Service Container for IOS XE. Cyber Defense Magazine – September 2019 has arrived. Some Zyxel devices can be hacked via DNS requests. CVE-2019-15846 Exim mail server flaw allows Remote Code Execution. Once again thank you!

IoT 76

IoT Data breaches DNS Advertising 76

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. 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.

VPN 68

VPN Accountability Passwords DNS 68

eSecurity Planet

FEBRUARY 16, 2021

Malware, short for “malicious software,” is any unwanted software on your computer that, more often than not, is designed to inflict damage. Since the early days of computing, a wide range of malware types with varying functions have emerged. Best Practices to Defend Against Malware. Jump ahead: Adware. RAM scraper.

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Malware Adware Spyware Antivirus 105

SecureList

NOVEMBER 26, 2021

The PyInstaller module for Windows contains a script named “Guard” Interestingly, this malware was developed for both Windows and macOS operating systems. The malware tries to spread to other hosts on the network by infecting USB drives. The vulnerability is in MSHTML, the Internet Explorer engine.

Malware 100

Malware Banking Energy and Utilities Accountability 100

SC Magazine

JUNE 22, 2021

These include basic cyber and email hygiene practices like identity management, authentication, limiting information, access and administrative control to authorized users, and verifying and limiting connections to external systems over the internet.

Government 68

Government Hacking Cybersecurity DNS 68

SC Magazine

JUNE 22, 2021

These include basic cyber and email hygiene practices like identity management, authentication, limiting information, access and administrative control to authorized users, and verifying and limiting connections to external systems over the internet.

Government 53

Government Hacking Cybersecurity DNS 53

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. The malware also decrypts and injects the payload in memory.

Malware 144

Malware DNS Accountability Manufacturing 144

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.

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Malware Phishing DNS Engineering 79

Cisco Security

AUGUST 29, 2022

25+ Years of Black Hat (and some DNS stats), by Alejo Calaoagan. Cisco is a Premium Partner of the Black Hat NOC , and is the Official Wired & Wireless Network Equipment, Mobile Device Management, DNS (Domain Name Service) and Malware Analysis Provider of Black Hat. Cisco Secure Malware Analytics (formerly Threat Grid).

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DNS Wireless Malware Firewall 77

SecureList

JUNE 7, 2023

However, recently the group has adopted new methods to deliver its malware. MotW is a Windows security measure — the system displays a warning message when someone tries to open a file downloaded from the internet. The threat actor also seems to be experimenting with new file types to deliver its malware.

DNS 102

DNS Malware Cryptocurrency Retail 102

Cisco Security

DECEMBER 8, 2022

To explore these scams, we used a dedicated computer, segmented from the rest of the network, and leveraged Cisco Secure Malware Analytics to safely open the emails before clicking on links or opening attachments. According to Cisco Umbrella , many of the sites asking for credit card details are known phishing sites, or worse, host malware.

Scams 142

Scams Phishing Malware Internet 142

Security Affairs

NOVEMBER 29, 2019

Group-IB, has analyzed key recent changes to the global cyberthreat landscape in the “Hi-Tech Crime Trends 2019/2020” report. According to Group-IB’s experts, the most frustrating trend of 2019 was the use of cyberweapons in military operations. As for 2019, it has become the year of covert military operations in cyberspace.

Banking 87

Banking Telecommunications Marketing Internet 87

eSecurity Planet

SEPTEMBER 25, 2023

Founded in 2004, Cloudflare initially wanted to determine the source of email spam and became dedicated to building a better, more secure internet. Cloudflare became a public company in 2019 when it listed under the stock symbol “NET” on the NYSE. Who Is Cloudflare?

DNS 98

DNS DDOS IoT Firewall 98

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 dabbles in mining and phishing multilingually.

Phishing 88

Phishing DNS Mobile Malware 88

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. In 2020, when much of life shifted online, internet resources repeatedly suffered from surges in totally legitimate activity.

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DDOS Cryptocurrency Marketing Internet 136

SecureList

MAY 31, 2021

Out of the 18,000 Orion IT customers affected by the malware, it seems that only a handful were of interest to the attackers. For example, before making the first internet connection to its C2s, the Sunburst malware lies dormant for up to two weeks, preventing easy detection of this behaviour in sandboxes.

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Malware Adware Encryption Architecture 109