This month, researchers discovered a multi-stage attack conducted by an undefined APT group. During this attack, adversaries used the Malleable C2 feature in Cobalt Strike to perform C&C communications and deliver the final payload. Researchers note that attackers use advanced evasion techniques. They observed an intentional delay in executing the payload from the malicious Word […]
Last week, security researchers discovered a curious way to hide the malicious payload in plain sight, and this method is actively used in the wild. Adversaries use fake error logs to store ASCII characters disguised as hexadecimal values that decode to a malicious payload designed to prepare the ground for script-based attacks. In the discovered […]
It’s no secret that phishing attacks are one of the most effective ways to infect the target with malware. Typically, adversaries expect to convince a user to open a malicious document and enable macros or use vulnerabilities in MS Office for deploy malware. We regularly publish rules (1, 2, 3) for detecting phishing campaigns or […]
And again, we want to highlight the content for detecting QBot malware in the Rule of the Week section. About a month ago, a simple but effective rule from Emir Erdogan was already published in this section. But the twelve-year-old Trojan continues to evolve, and just a couple of days ago, fresh samples of this […]
Latin American banking trojans are just about to make a separate trend in malware writing. Adversaries regularly create new Trojans or Exploit Kits to attack bank users in Brazil, Mexico, and Peru, and with each new malicious campaign expand their target lists first to neighboring countries, and then to worldwide campaigns. In our recently published […]
Zoom-themed lures continue to be actively used by cybercriminals, taking pride of place in the top ten most used topics in phishing campaigns. From the very beginning of the lockdown, as the Zoom popularity grew, the number of attacks increased, and even after researchers discovered serious security problems with the service, many organizations did not […]
Lokibot is trojan-type malware designed to collect a wide range of sensitive data. It was first noticed in 2015 and remains very popular among cybercriminals as it can be purchased at the underground forum by any attacker. A couple of years ago, “tinkerers” learned how to add C&C infrastructure addresses to the Trojan on their […]
This week our Rule Digest covers more content than usual. It compiles rules for detecting recent attacks of state-sponsored actors, malware campaigns conducted by cybercriminals, and abusing Windows telemetry. Mustang Panda is the China-based threat group that has demonstrated an ability to rapidly assimilate new tools and tactics into its operations. This APT group […]
Today in the Rule of the Week section we want to highlight a new threat hunting rule from Ariel Millahuel which helps to detect samples of Bunitu Proxy Trojan: https://tdm.socprime.com/tdm/info/3evdCZVz3mCX/_WrlonIBPeJ4_8xctGPi/?p=1 Bunitu Trojan is used for turning infected systems into a proxy for remote clients. Its malicious actions can slow down the network traffic, and adversaries […]
Higaisa APT has been known since November 2019, when Tencent researchers first documented its activities. The group was discovered recently, but attackers have been operating for several years and use common tools to complicate the attribution. They mainly use mobile malware and the Gh0st and PlugX trojans. Researchers believe that Higaisa APT is a South […]