Tag: RCE
The majority of the scanning activity is coming from IP addresses assigned to just a handful of ASNs, mostly AS49870 (Alsycon, a hosting provider out of the Netherlands) and AS47890 (Unmanaged Ltd, what looks to be an IT consulting firm based out of the UK). The scanners appear to be using VPS or other resources…
Read MoreSecurity researchers at F5 Networks constantly monitor web traffic at various locations throughout the world. This allows us to detect “in the wild” malware, and to get an insight into the current threat landscape. Here’s an overview of what we saw in May 2019. Throughout the month of May, the team detected 10 new attack…
Read MoreA vulnerable FortiGate SSL VPN server responds to this request with contents of the sslpvpn_websession file, which contains the username and password of a user. This information can be used or sold to threat actors in order to compile brute force and credential stuffing lists. While reconnaissance campaigns do not actively exploit systems, they enable…
Read MoreThe script uses random function and variable names to avoid detection by antivirus engines. It also contains another Base64-encoded payload. The threat actor uses .Net APIs to call the Windows API. For example, the script uses the .NET API to find address of VirtualAlloc function exported by kernel32.dll. It then marshals the shellcode by using…
Read MoreF5 Networks researchers have detected a new variant of the “Echobot” malware, now consisting of 71 exploits. The authors continue to follow the trend of arming the malware and for the threat group to expand its operation. These newly added exploits target both old and new vulnerabilities, adding as new ones target industrial control system…
Read MoreSecurity researchers at F5 Networks constantly monitor web traffic at various locations all over the world. This allows us to detect “in the wild” malware and get insights into the current threat landscape. In November 2019, new malicious campaign activity was down 40 percent compared to October 2019. While this seems like a large decline,…
Read MoreSecurity researchers at F5 Networks constantly monitor web traffic at various locations all over the world. This allows us to detect “in the wild” malware, and to get an insight into the current threat landscape. In December 2019, security researchers detected a 100% increase in new threat campaigns as compared to November 2019. This was…
Read MoreWhat Does a Typical Brute Force Attack Look Like at a Service Provider? Brute force attack methods vary. It’s not uncommon, for example, for mobile phone service providers to encounter unauthorized online account activity in which an attacker accesses accounts by trying a phone number in combination with a PIN code. These types of attacks…
Read MoreIdentifying Trends in Recent Cyberattacks Web attacks vary quite a lot—by target, technique, objective, and attacker—which makes it difficult for a system owner to assess the instantaneous risk to their particular combination of systems until they’re attacked. To help defenders anticipate the risks they face, we analyzed several months’ worth of global honeypot traffic from…
Read MoreOn Tuesday, December 8th, 2020, FireEye, a leading cybersecurity firm used by governments and companies for penetration testing and forensic services announced that it had been the target of an attack by nation-state actors “with top-tier offensive capabilities,” and that a suite of tools used by FireEye for penetration testing had been stolen. What do…
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