The Linux vulnerability called Dirty COW (CVE-2016-5195) was first disclosed to the public in 2016. The vulnerability was discovered in upstream Linux platforms such as Redhat, and Android, which kernel is based on Linux. It is categorized as a serious privilege escalation flaw that allows an attacker to gain root access on the targeted system. Dirty COW attacks on Android has been silent since its discovery, perhaps because it took attackers some time to build a stable exploit for major devices. Almost a year later, Trend Micro researchers captured samples of ZNIU (detected as AndroidOS_ZNIU)—the first malware family to exploit the vulnerability on the Android platform.Read More
The EITest campaign’s main arsenal is compromised websites. Its activity can be traced to as early as 2014 and once used the Angler exploit kit to deliver ransomware. Starting January 2017, it has eschewed exploit kits in favor of “HoeflerText” (a popular font) phishing attacks or . In a month, we identified 990 compromised websites injected with a malicious script that diverts the would-be victim to a website related to the tech support scam. Of late, though, the campaign has added the Coinhive JS miner into ongoing attacks, turning the victim’s computer into a Monero cryptocurrency miner. Analysis also revealed that this JS cryptocurrency miner is the same “Coinhive” JS miner found embedded in The Pirate Bay’s website.Read More
We’ve uncovered a new exploit kit in the wild through a malvertising campaign we’ve dubbed “ProMediads”. We call this new exploit kit Sundown-Pirate, as it’s indeed a bootleg of its precursors and actually named so by its back panel.
ProMediads has been active as early as 2016, employing Rig and Sundown exploit kits to deliver malware. Its activities dropped off in mid-February this year, but suddenly welled on June 16 via Rig. However, we noticed that ProMediads eschewed Rig in favor of Sundown-Pirate on June 25.
It’s worth noting that Sundown-Pirate is only employed by ProMediads so far. This could mean that it’s yet another private exploit kit, like the similarly styled GreenFlash Sundown exploit kit that was exclusively used by the ShadowGate campaign.Read More
At the end of April this year, we found Astrum exploit kit employing Diffie-Hellman key exchange to prevent monitoring tools and researchers from replaying their traffic. As AdGholas started to push the exploit, we saw another evolution: Astrum using HTTPS to further obscure their malicious traffic. We spotted a new AdGholas malvertising campaign using the…Read More