Print bomb?
There have been several reports now of PCs on the network printing what looks like an executable to a large number of printers. Several scanning tools will cause this kind of behaviour, but in the instances I know of these tools were not being used on the network at the time. The various AV products aren't great at picking this up, yet.
If you have this happen in your network use your logs to determine the sending machine (will be in the print logs) and take it offline for investigation and re-imaging. If you happen to have the actual malware upload it via the contact form and make our malware guys and gals happy.
Mark
Some updates:
Other than the excellent comments made to the dairy (thanks), we received a file that is the file reportedly being sent to the printers - e864689c6897dab7daa727f2ab70ef5a. this file is some adware that currently has 21/41 detect rate which is slowly improving. The dropper is BA9D4EFB6622D4DE95C162D95CB171A4 and has a detect rate of 17/41 ATM.
Packets wanted, DNS DDOS attacks
Jim posted earlier in the week (https://isc.sans.edu/diary.html?storyid=13387) regarding a bind 9 vulnerability. Whilst possibly unrelated we've had a report regarding a few million DNS responses with static IDs being sent to an organisation.
If you have something similar happening and you are in a position to capture some packets we'd appreciate it if you could upload some for us to have a look at. Especially of they all have the same ID number.
Mark
Follow up on Got packets? Interested in TCP/8909, TCP/6666, TCP/9415, TCP/27977 and UDP/7
A few weeks ago I posted a request for packets for the above ports, a big thanks to all that provided information.
Whilst still not 100% confirmed it looks like 8909 and 9415 are associated with open proxies. I've seen some IPs that look for open proxies hit 8909 and 9415 as well as the normal proxy ports.
27977 is still a bit of a mystery, the packets received were all associated with normal traffic that happened to use this port as a source port.
UDP /7 was an interesting one. I only received 8 packets that were relevant and these were interesting. 512 bytes long, After the header the first two bytes count up, the second two bytes count down and the rest of the packet is all 000's. Likely because there was nothing to interact with. Would dearly love some additional packets for this port.
If you can help out submit the packets through the contact form and thanks in advance.
Mark
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
8 months ago
Anonymous
Dec 26th 2022
8 months ago
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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