This new iteration of Purple Fox that we came across, also being delivered by Rig, has a few new tricks up its sleeve. It retains its rootkit component by abusing publicly available code. It now also eschews its use of NSIS in favor of abusing PowerShell, making Purple Fox capable of fileless infection. It also incorporated additional exploits to its infection chain, most likely as a foolproof mechanism to ensure that it can still infect the system. Purple Fox is a downloader malware; besides retrieving and executing cryptocurrency-mining threats, it can also deliver other kinds of malware.Read More
An exploit kit such as Rig usually starts off with a threat actor compromising a website to inject a malicious script/code that eventually redirects would-be victims to the exploit kit’s landing page. Sometime around February to March last year, however, we saw Rig’s Seamless campaign adding another layer or gate before the actual landing page.
Along with updates in code, we also observed Rig integrating a cryptocurrency-mining malware as its final payload. Based on the latest activities we’ve observed from Rig, they’re now also exploiting CVE-2018-8174, a remote code execution vulnerability patched in May and reported to be actively exploited. The exploit also appears to be from a recently disclosed proof of concept. The security flaw affects systems running Windows 7 and later operating systems, and the exploit works through Internet Explorer (IE) and Microsoft Office documents that use the vulnerable script engine.Read More
We recently discovered a new campaign that we dubbed “Operation Overtrap” for the numerous ways it can infect or trap victims with its payload. The campaign mainly targets online users of various Japanese banks by stealing their banking credentials using a three-pronged attack. Based on our telemetry, Operation Overtrap has been active since April 2019 and has been solely targeting online banking users located in Japan.Read More
We observed an increase in hacking group Outlaw’s activities in December, with updates on the kits’ capabilities reminiscent of their previous attacks.Read More
We found new details on the tools and techniques the Momentum botnet is currently using to compromise devices and perform distributed denial-of-service (DDoS) attacks, and propagate with numerous exploits.Read More