Vulnerability exploitation was detected by 360 Core Security. The company uncovered a zero-day vulnerability in IE, dubbed ‘double play’, that was triggered by weaponized MS Office documents. The experts have been observing an APT group targeting a limited number of users exploiting the zero-day flaw.
Hackers can use the ‘double play’ flaw to implant a backdoor Trojan and take full control over the vulnerable machine.
The APT group was delivering an Office document with a malicious web page embedded, once the user opens the document, the exploit code and malicious payloads are downloaded and executed from a remote server. The later phase of this attack leverages a public UAC bypass technique and uses file steganography and memory reflection loading to avoid traffic monitoring and achieve loading with no files. This ‘double play’ vulnerability may affect the latest versions of Internet Explorer and applications that are with IE kernel.
For now most of the victims are located in Asia.
The vulnerability was used to compromise hosting servers. The attack was reportedly performed from IP addresses, located in China.
This vulnerability triggered an outage of Digitalocean in NYC regions.
The vulnerability was used in the wild against PyBitmessage v0.6.2 users. According to vendor's notice, Bitmessage developer Peter Šurda's Bitmessage addresses were compromised as well by the attackers.
KR-CERT reported in the wild exploitation of zero-day vulnerability in the latest version of Adobe Flash Player. According to the South Korean Computer Emergency Response Team (KR-CERT), the exploit has being used in the wild since mid-November 2017.
Security experts for FireEye linked the vulnerability to the hacking group TEMP.Reaper. The IP-addresses from which attacks were connected with the C&C-servers belong to the Internet provider Star JV - a joint venture of North Korea and Thailand.
Cisco Talos observed use of vulnerability in attacks conducted by Group 123.
According to FireEye, after successful exploitation of the vulnerability the system is infected with DOGCALL malware.
Cisco Talos specialists also reported cyberattacks using the malicious software, which they called Rokrat.
As revealed by security experts for Morphisec Labs Michael Gorelik and Assaf Kachlon the vulnerability has been used in a watering hole attack against Hong Kong Telecommunications company.
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