New Waves of Scans Detected by an Old Rule
Who remembers the famous ShellShock (CVE-2014-6271)? This bug affected the bash shell in 2014 and was critical due to the facts that it was easy to exploit and that bash is a widespread shell used in many tools/applications. So, at this time, I created an OSSEC alerts to report ShellShock exploitation attempts against my servers. Still today, I'm getting a hit on this rule from time to time.
But, for 15 days, I started to get more alerts like this one:
Received From: (xxxx) x.x.x.x->/www/log/xxxxxxx.access
Rule: 100705 fired (level 10) -> "Shellshock Attempt"
Src IP: x.x.x.x
Portion of the log(s):
x.x.x.x - - [04/Apr/2019:07:31:19 +0200] "GET /type.php?template=tag_(){};@unlink(_FILE_);assert($_POST[T00ls]);{//../rss HTTP/1.1" 301 604 "http://xxxxxxx" "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html\xa3\xa9"
This rule fired 34 times since mid-March and I'm still getting, at least, one per day. This query is related to CVE-2018-19127 which affects phpcms[1]. By exploiting the vulnerability, the attackers get a webshell on the server (details are available on a Github page[2]). Some details about the hits I found:
Three different User-Agents have been used:
Mozilla/4.0 (compatible; MSIE 9.0; Windows NT 6.1) 24 Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html\xa3\xa9 2 python-requests/2.21.0 8
Scan sources are clearly identifiable:
The scan in itself is not critical (except if you're still running a vulnerable version of phpcms of course) but what's interesting here? An alert created in your SIEM or log management solution a long time ago can still be relevant!
[1] http://www.cmsmatrix.org/matrix/cms-matrix/phpcms#
[2] https://github.com/ab1gale/phpcms-2008-CVE-2018-19127
Xavier Mertens (@xme)
Senior ISC Handler - Freelance Cyber Security Consultant
PGP Key
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.
<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
Anonymous
Dec 26th 2022
8 months ago
Anonymous
Dec 26th 2022
8 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
8 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
8 months ago
Anonymous
Dec 26th 2022
8 months ago
https://defineprogramming.com/
Dec 26th 2022
8 months ago
distribute malware. Even if the URL listed on the ad shows a legitimate website, subsequent ad traffic can easily lead to a fake page. Different types of malware are distributed in this manner. I've seen IcedID (Bokbot), Gozi/ISFB, and various information stealers distributed through fake software websites that were provided through Google ad traffic. I submitted malicious files from this example to VirusTotal and found a low rate of detection, with some files not showing as malware at all. Additionally, domains associated with this infection frequently change. That might make it hard to detect.
https://clickercounter.org/
https://defineprogramming.com/
Dec 26th 2022
8 months ago
rthrth
Jan 2nd 2023
8 months ago