- New Linux malware brute-forces SSH servers to breach networks
August 4, 2022
A new botnet called ‘RapperBot’ is being used in attacks since mid-June 2022, focusing on brute-forcing its way into Linux SSH servers to establish a foothold on the device. The researchers show that RapperBot is based on the Mirai trojan but deviates from the the original malware’s normal behavior, which is uncontrolled propagation to as many ...
- Critical RCE vulnerability impacts 29 models of DrayTek routers
August 4, 2022
Researchers at Trellix have discovered a critical unauthenticated remote code execution (RCE) vulnerability impacting 29 models of the DrayTek Vigor series of business routers. The vulnerability is tracked as CVE-2022-32548 and carries a maximum CVSS v3 severity score of 10.0, categorizing it as critical. The attacker does not need credentials or user interaction to exploit the vulnerability, ...
- Microsoft finds Raspberry Robin worm in hundreds of Windows networks
July 1, 2022
Microsoft says that a recently spotted Windows worm has been found on the networks of hundreds of organizations from various industry sectors. The malware, dubbed Raspberry Robin, spreads via infected USB devices, and it was first spotted in September 2021 by Red Canary intelligence analysts. Cybersecurity firm Sekoia also observed it using QNAP NAS devices as command ...
- Burrowing your way into VPNs, Proxies, and Tunnels
June 29, 2022
When considering an attack lifecycle from an adversarial perspective, the adversary has a few options on how to proceed at each step. One of questions that needs to be answered is whether the adversary will use publicly known malware (i.e. BEACON), custom built-from-the-ground-up malware (i.e. HAMMERTOSS), or legitimate software and services (i.e. SoftEther Virtual Private ...
- ZuoRAT is targeting routers to break into networks
June 29, 2022
A newly discovered remote access trojan (RAT) called ZuoRAT has targeted remote workers by exploiting flaws in often unpatched small office/home office (SOHO) routers. Researchers at Lumen’s Black Lotus Labs threat intelligence unit report that ZuoRAT is part of a highly targeted, sophisticated campaign that has been targeting workers across North America and Europe for nearly ...
- Sophos Firewall zero-day bug exploited weeks before fix
June 16, 2022
Chinese hackers used a zero-day exploit for a critical-severity vulnerability in Sophos Firewall to compromise a company and breach cloud-hosted web servers operated by the victim. The security issue has been fixed in the meantime but various threat actors continued to exploit it to bypass authentication and run arbitrary code remotely on multiple organizations. On March 25, ...
- A tiny botnet launched the largest DDoS attack on record
June 15, 2022
Web performance firm Cloudflare says it mitigated a record-breaking distributed denial of service (DDoS) attack last week that peaked at 26 million request per second (rps). It was caused by a small but powerful botnet of just 5,067 devices. This attack didn’t originate from compromised low-bandwidth Internet of Things devices like many other DDoS or junk ...
- BPFdoor: Stealthy Linux malware bypasses firewalls for remote access
May 12, 2022
A recently discovered backdoor malware called BPFdoor has been stealthily targeting Linux and Solaris systems without being noticed for more than five years. BPFdoor is a Linux/Unix backdoor that allows threat actors to remotely connect to a Linux shell to gain complete access to a compromised device. The malware does not need to open ports, it can’t ...
- It costs just $7 to rent DCRat to backdoor your network
May 9, 2022
A budget-friendly remote access trojan (RAT) that’s under active development is selling on underground Russian forums for about $7 for a two-month subscription, according to BlackBerry researchers today. The backdoor Windows malware, dubbed DCRat or DarkCrystal RAT, was released in 2018, then redesigned and relaunched the following year. An individual who goes by the handles boldenis44, ...
- Exploits created for critical F5 BIG-IP flaw – install patch immediately
May 8, 2022
Security researchers are warning F5 BIG-IP admins to immediately install the latest security updates after creating exploits for a recently disclosed critical CVE-2022-1388 remote code execution vulnerability. Last week, F5 disclosed a new critical remote code execution in BIG-IP networking devices tracked as CVE-2022-1388. This vulnerability affects the BIG-IP iControl REST authentication component and allows remote ...