SecureList

DECEMBER 1, 2023

For most implants, the threat actor uses similar implementations of DLL hijacking (often associated with ShadowPad malware) and memory injection techniques, along with the use of RC4 encryption to hide the payload and evade detection. libssl.dll or libcurl.dll was statically linked to implants to implement encrypted C2 communications.

Malware 107

Malware Ransomware Encryption Energy and Utilities 107

eSecurity Planet

SEPTEMBER 3, 2022

For example, the 2016 DDoS attack on the Dyn managed domain name service (DNS) caused the DNS service to fail to respond to legitimate DNS inquiries and effectively shut down major sites such as PayPal, Spotify, Twitter, Yelp, and many others. Also read: How to Secure DNS. Types of DDoS Attacks.

DDOS 145

DDOS DNS Firewall Internet 145

Fox IT

JANUARY 12, 2021

Besides using the Cobalt Strike beacon, the adversary also searches for VPN and firewall configs, possibly to function as a backup access into the network. The tool was shared on a Chinese forum around 2016. The adversary compresses and encrypts the data by using WinRAR from the command-line. The DNS-responses weren’t logged.

VPN 68

VPN Accountability Passwords DNS 68

SecureList

JANUARY 13, 2022

BlueNoroff is the name of an APT group coined by Kaspersky researchers while investigating the notorious attack on Bangladesh’s Central Bank back in 2016. After sending a beacon to the C2 server, the malware collects general system information, sending it after AES encryption. domainhost.dynamic-dns[.]net. PROCESS_ID. #.

Cryptocurrency 134

Cryptocurrency Malware Accountability Banking 134

eSecurity Planet

MARCH 25, 2022

Between 2016 and 2018, the malware strain SamSam made brute force RDP attacks an integral part of its attacks on several public organizations. By exploiting weak server vulnerabilities, the Iran-based hackers were able to gain access, move laterally, encrypt IT systems, and demand ransom payment. clinical labs company September U.S.

VPN 120

VPN Software Authentication Encryption 120

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.

Malware 144

Malware DNS Accountability Manufacturing 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). Back in 2015, when Let’s Encrypt was was just emerging as a certificate-authority force, Josh Aas, the ISRG's executive director said that "Encryption should be the default for the web.

Encryption 52

Encryption DNS Backups Internet 52