SecureList

DECEMBER 18, 2020

In the initial phases, the Sunburst malware talks to the C&C server by sending encoded DNS requests. These requests contain information about the infected computer; if the attackers deem it interesting enough, the DNS response includes a CNAME record pointing to a second level C&C server. avsvmcloud[.]com” avsvmcloud[.]com”

DNS 75

DNS Telecommunications Malware Encryption 75

Hacker Combat

JULY 5, 2021

These malicious software variants that are believed to have been in existence since 2019 have been associated with various attacks against enterprise organizations, CD Projekt Red, and the developer of Cyberpunk 2077. Further, it also matches the two variants in how the malware executes file encryption and secures command-line disputes.

Ransomware 133

Ransomware DNS Software Encryption 133

Security Affairs

JUNE 18, 2020

They use DNS tunneling for stealthier C&C communications, and place execution guardrails on the malicious components to hide the malware from security researchers.” Experts also observed attackers using a DNS downloader that was designed for long-term, covert access to the target machine.

DNS 131

DNS Advertising Spyware Software 131

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. A review of the passive DNS records tied to this address shows that apart from subdomains dedicated to tornote[.]io, The real Privnote, at privnote.com. And it doesn’t send or receive messages.

Phishing 255

Phishing Cryptocurrency DDOS Internet 255

Krebs on Security

JULY 3, 2023

However, searching passive DNS records at DomainTools.com for thedomainsvault[.]com Searching on ubsagency@gmail.com in Constella Intelligence shows the address was used sometime before February 2019 to create an account under the name “ SammySam_Alon ” at the interior decorating site Houzz.com. Thedomainsvault[.]com

Scams 276

Scams Business Services Accountability Marketing 276

Security Affairs

JUNE 24, 2024

For secure communication, operators employ DNS/ICMP tunneling, WSS, and QUIC protocols. The backdoor serializes, encrypts, archives, and sends the collected data to a designated server that stores compromised data. The communication between GoRed and its C2 server relies on the RPC protocol.

Cybercrime 127

Cybercrime Telecommunications DNS Technology 127

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 128

Ransomware DNS Encryption Backups 128

Security Affairs

OCTOBER 20, 2021

“However, instead of sending it in cleartext, the client deploys a symmetric AES encryption for any communication over the WebSocket for the first exchange, as no shared secret is established yet, and the AES encryption will generate a default key for this first exchange. ” continues the analysis.

Encryption 121

Encryption DNS Architecture Firewall 121

Security Affairs

NOVEMBER 19, 2020

Impacted systems included WordPress and DotNetNuke managed hosting platforms, online databases, email servers, DNS servers, RDP access points, and FTP servers. REvil gang is one of the major ransomware operations, it has been active since April 2019, its operators claim to earn over $100 million a year through its RaaS service.

Ransomware 144

Ransomware DNS Encryption Hacking 144

Security Affairs

APRIL 23, 2019

Security expert Marco Ramilli published the findings of a quick analysis of the webmask project standing behind the DNS attacks implemented by APT34 (aka OilRig and HelixKitten ). 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 109

DNS Computers and Electronics Penetration Testing Government 109

Security Affairs

MARCH 22, 2020

The expert Bob Diachenko has discovered an unsecured Elasticsearch install belonging to a UK security firm that contained 5 billion records of data leaked in previous incidents that took place between 2012 and 2019. ” wrote Security Discovery’s researcher Bob Diachenko.

Data breaches 111

Data breaches Advertising DNS Engineering 111

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. The only experience listed for Khafagy prior to the TikTok job is labeled “Marketing” at “Confidential,” from February 2014 to October 2019.

Accountability 269

Accountability Advertising Marketing Malware 269

Security Affairs

DECEMBER 12, 2019

” The GALLIUM threat actor is active, but its activity was more intense between 2018 and mid-2019. link] — bk (Ben K) (@bkMSFT) December 12, 2019. The operators leverage on low cost and easy to replace infrastructure using dynamic-DNS domains and regularly reused hop points. ” continues the analysis.

Telecommunications 97

Telecommunications DNS Malware Advertising 97

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 110

DNS Malware Advertising Manufacturing 110

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.

DDOS 108

DDOS System Administration Advertising DNS 108

Security Affairs

MARCH 22, 2020

The expert Bob Diachenko has discovered an unsecured Elasticsearch install belonging to the security firm Keepnet Labs that contained 5 billion records of data leaked in previous incidents that took place between 2012 and 2019. ” wrote Security Discovery’s researcher Bob Diachenko.

Data breaches 93

Data breaches Advertising DNS Engineering 93

Security Affairs

DECEMBER 7, 2019

The experts at Cybaze confirmed that the infection patterns were similar to the other attacks spotted in early 2019, including the Matryoshka structure and the use of chained SFX archives. The bait documents reveal malicious activity from at least September 2019, to November 25, 2019. The Gamaredon group.

Government 89

Government Advertising Media DNS 89

SecureList

JUNE 1, 2023

The oldest traces of infection that we discovered happened in 2019. Optional: decrypt the backup If the owner of the device has set up encryption for the backup previously, the backup copy will be encrypted. The timelines of multiple devices indicate that they may be reinfected after rebooting. net backuprabbit[.]com com anstv[.]net

Malware 145

Malware Backups Mobile DNS 145

eSecurity Planet

SEPTEMBER 17, 2021

Cobalt Strike Beacon Linux enables emulation of advanced attacks to a network over HTTP, HTTPS, or DNS. It’s a DNS-based communication that helps circumvent classic defense mechanisms that focus on HTTP traffic. Fox-IT researchers found a bug in Cobalt Strike in 2019 that defenders could exploit to identify attacker servers.

DNS 97

DNS Malware Software Security Awareness 97

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. To do so, it performs a DNS request to don-dns[.]com

Cryptocurrency 117

Cryptocurrency DNS Malware Encryption 117

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. If a cyber criminal gets access to emails, they won’t be able to access that sensitive data if it’s encrypted.

Encryption 97

Encryption Cyber Insurance Cybercrime Phishing 97

Security Affairs

JULY 27, 2020

According to our estimate, CoAP can reach up to 32 times (32x) amplification factor, which is roughly between the amplification power of DNS and SSDP.”. Another protocol exploited by threat actors in the wild is the Web Services Dynamic Discovery (WS-DD), experts observed large scale DDoS attacks in May and August 2019.

DDOS 142

DDOS IoT Internet Internet 142

Security Affairs

AUGUST 20, 2019

In 2019 alone, Silence has infected workstations in more than 30 countries across Europe, Latin America, Africa, and Asia. Ivoke was detected by Group-IB’s Threat Intelligence team in May 2019, when Silence sent out phishing emails purporting to be from a bank’s client with a request to block a card.

Banking 95

Banking Cybercrime Advertising Cybersecurity 95

Google Security

MAY 25, 2023

At Cloudflare, we believe encryption should be free for all; we pioneered that for all our customers back in 2014 when we included encryption for free in all our products. Their technical expertise guarantees they'll be able to scale to meet the needs of an increasingly encrypted Internet," says Matthew Prince, CEO, Cloudflare.

Encryption 86

Encryption Internet Internet DNS 86

McAfee

SEPTEMBER 14, 2021

The PlugX families we observed used DNS [ T1071.001 ] [ T1071.004 ] as the transport channel for C2 traffic, in particular TXT queries. Another clue that helped us was the use of DNS tunneling by Winnti which we discovered traces of in memory. The hardcoded 208.67.222.222 resolves to a legitimate OpenDNS DNS server. Conclusion.

Malware 144

Malware DNS Accountability Manufacturing 144

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 104

Computers and Electronics Penetration Testing DNS Phishing 104

eSecurity Planet

MAY 28, 2021

Ransomware: Encryption, Exfiltration, and Extortion. Ransomware perpetrators of the past presented a problem of availability through encryption. Detect Focus on encryption Assume exfiltration. Also Read: How to Prevent DNS Attacks. Also Read: Types of Malware | Best Malware Protection Practices for 2021. Old way New way.

Software 108

Software DNS Firmware VPN 108

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). The following map shows the countries where we detected Tomiris targets (colored in green: Afghanistan and CIS members or ratifiers).

Malware 134

Malware DNS Government Software 134

eSecurity Planet

MARCH 25, 2022

By exploiting weak server vulnerabilities, the Iran-based hackers were able to gain access, move laterally, encrypt IT systems, and demand ransom payment. The Remote Access VPN enables more robust security with the encryption of transmitted data, system compliance scanning, and multi-factor authentication.

VPN 118

VPN Software Authentication Encryption 118

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. Then, the encrypted payload is XORed using the embedded XOR key. Roaming Mantis dabbles in mining and phishing multilingually. Roaming Mantis, part III.

Phishing 99

Phishing DNS Mobile Malware 99

SecureList

SEPTEMBER 26, 2022

Configuration is stored in several registry keys in encrypted and base64 encoded form. Racoon is also known to have evolved over the years since it was discovered in 2019. LgoogLoader is a Trojan-Downloader that downloads an encrypted configuration file from a hardcoded static URL. Satacom DNS request and response.

Malware 133

Malware Cryptocurrency Passwords Software 133

SecureList

MAY 31, 2021

A41APT is a long-running campaign, active from March 2019 to the end of December 2020, that has targeted multiple industries, including Japanese manufacturing and its overseas bases. Ransomware encrypting virtual hard disks. The first vulnerability ( CVE-2019-5544 ) can be used to carry out heap overflow attacks.

Malware 136

Malware Adware Encryption Architecture 136

Security Affairs

FEBRUARY 19, 2019

In detail, the first wave observed was on February 12th, 2019. An encrypted snippet of code, for instance, has high entropy associated. The malware tries to resolve the DNS: sameerd.net. As shown, the DNS has not been resolved. Figure 31: Available ports of the malicious DNS. Figure 3: Passive DNS replication.

Malware 103

Malware Phishing DNS Engineering 103

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

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. Umbrella DNS into NetWitness SIEM and Palo Alto Firewall .

DNS 76

DNS Wireless Malware Firewall 76

SecureList

MAY 23, 2023

GoldenJackal is an APT group, active since 2019, that usually targets government and diplomatic entities in the Middle East and South Asia. Code snippet used to generate the BOT_ID The resulting BOT_ID is used also to initialize the DES key and IV, which are then used to encrypt communication with the C2. User-Agent: Mozilla/5.0

Malware 137

Malware Encryption Government Technology 137

eSecurity Planet

DECEMBER 17, 2021

In the Gartner Magic Quadrant for Cloud Access Security Brokers, Forcepoint was a Niche Player in 2018 and 2019 before becoming a Visionary in 2020. Security functionality for DLP, discovery, encryption, and digital rights management. Encryption at rest or managed in real-time with certified FOPS 140-2 Level 3 KMS.

Risk 135

Risk Firewall Authentication Encryption 135