Suspicious GET Request: Do You Know What This Is?
Reader Vinnie noticed following suspicious GET request directed at his web server:
My first idea was an attempt to abuse his web server as a proxy, or log SPAM.
Vinnie executed this request (hxxp://189[.]40[.]40[.]159:7771/u9licfgnx56ryp0jfdmis6s3hez4wij), and got text back:
171886eb9748eb13fc7548e018bf5b70jA0ECQMCkTJtXpMYj4b00ukBAU2wE+cAc+fGlL16GWLH6RAVc2yShs37UlBBj2cDX3s7FLGSshr...
I was able to make some sense of this: the first 32 characters are hexadecimal digits, and the rest is BASE64. That BASE64 string decodes to binary data that starts with the magic header for "GPG symmetrically encrypted data (AES256 cipher)": "8C 0D 04 09 03 02".
The data has a high entropy:
That's as far as I got.
We don't know if the server replying with this data is under the control of the attacker, or not. It could be an "innocent bystander".
Do you have any idea what this might be about, or what the data is? Please post a comment!
We're not asking to interact with this server, there's no need. We want to know if you have ideas about the request type or returned data. Should you still decide to interact with this server, be careful. We don't recommend it, we don't know what this server is or does. Don't do anything that might be considered hostile and don't do anything illegal.
If you want a second example of data, take a look at Shodan's report: https://www.shodan.io/host/189.40.40.159
Please post a comment, thanks!
Didier Stevens
Senior handler
Microsoft MVP
blog.DidierStevens.com DidierStevensLabs.com
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
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<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
9 months ago
Anonymous
Dec 26th 2022
9 months ago
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Anonymous
Dec 26th 2022
9 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
9 months ago
Anonymous
Dec 26th 2022
9 months ago
https://defineprogramming.com/
Dec 26th 2022
9 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
9 months ago
rthrth
Jan 2nd 2023
8 months ago