Hackers Exploiting Two 0-Day Bugs in DrayTek Routers dump heaven fullz, valid cc seller

Researchers observed two new hackers groups abusing two DrayTek Routers’ zero-day vulnerabilities to exploit the enterprise network routers and perform a series of attacks.
Recently we have reported a similar attack in which hackers hijack Home Routers & Change The DNS Settings to implant malware via a malicious website.
This is another new wave of attack where attackers using zero-day bugs to perform attacks including eavesdropping on device’s network traffic, running SSH services on high ports, creating system backdoor accounts, and implanting specific malicious Web Session backdoor.
The ongoing zero-day attack was initially disclosed on December 25, 2019, with an indicator of compromise (IOC), and it is highly weaponized in nature.
Both are remote command execution vulnerabilities and the first one affected the keyPath field that used to specify the file suffix of the RSA private key to initiate a login request in the router.
Another RCE Vulnerability in rtick makes command injection possible when the formCaptcha(), a function that used in CAPTCHA image does not check the incoming timestamp from rtick.
According to netlab 360 reports , “The two 0-day vulnerability command injection points are  and rtick, located in the /www/cgi-bin/mainfunction.cgi, and the corresponding Web Server program is /usr/sbin/lighttpd.”
A first attacker group using the keyPath  RCE vulnerability to download and execute the script ( http://103.82.143.51:58172/vig/tcpst1).
Later it downloads another following script,
In this case, attackers using the script ” /etc/mailsend.sh “ to eavesdrop on all network interfaces where the DrayTek Vigor network deployed and listen on the ports 21, 25, 143, and 110.
During the attacks, actors are running the following tcpdump command that running in the background.
Another group of an attacker using the rtick command injection vulnerability to create 2 sets of Web Session backdoors that let DrayTek Vigor network device never logs out unless the device is rebooted.
Later they create an SSH backdoor on TCP / 22335 and TCP / 32459
DrayTek fixed this bug on February 10, 2020, and issued a security update and released the latest firmware program 1.5.1.
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