Tag: Attack Campaign
API Vulnerability Data The sensor network that our partner Lorkya maintains found only 0.1% of attack traffic was definitively looking for API vulnerabilities. However, this is probably better attributed to the limitations of the sensor network than any trends about API attacks. Loryka’s sensors primarily detect wide-ranging probes and reconnaissance campaigns where attackers are looking…
Read MoreWhile analyzing this script which downloads and executes the cryptominer, F5 researchers found that the code is sophisticated, well obfuscated, and long—about 200 lines versus the typical 20 or so lines. The authors clearly put a lot of time and attention into every step, from developing the malware dropper to creating the executable JAR file…
Read MoreFurther analysis on this sample was not conducted. F5 Labs has reported extensively on the Mirai botnet, IoT landscape, and some of its variants. For a detailed breakdown on current Mirai botnets seen in the threat landscape, the Hunt for IoT Research Series publishes current threat data. Conclusion All of the vulnerabilities targeted this month…
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 MoreCompletely investigating the underlying server architecture and CNC structure of banking trojans such as DanaBot is an area of continuing research for the F5 malware team. Conclusion As with all banking trojans, DanaBot actively updates its tactics, techniques, and target list to both avoid detection and maintain continual operations to optimize the attacker’s financial reward.…
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 MoreF5 Labs in collaboration with Effluxio researches global attack traffic to gain a better understanding of cyberthreat landscape. In this episode of regional threat analysis, F5 Labs researchers break down the data collected by our sensors on attacks targeting India from October 1 through December 31, 2020. Cyberattacks happen in many forms, but it usually…
Read MoreThe IcedID malware, also known as Bokbot, is a banking trojan first discovered in 2017 that steals credentials by tricking browser functions into redirecting traffic. It is a stealthy, fileless malware with anti-sandbox capabilities. Previously, F5 Labs analyzed IcedID decompression methods for web injecting relevant files into a target list. This is a much deeper…
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