# DOS Attack
>OSINT
>Points - 100
>One customer of Senork Vertriebs GmbH reports that some older Siemens devices repeatedly crash. We looked into it and it seems that there is some malicious network traffic that triggers a DoS condition. Can you please identify the malware used in the DoS attack? We attached the relevant network traffic.Flag format: syskronCTF{name-of-the-malware}
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First, take a quick look at the provided _pcap_ file. See that it consists solely of DNS queries:
![dns](./dns.png)
now simply do a Google search for something like `siemens dos dns` - looking at the results you'll find several articles like [this one](https://www.securityweek.com/flaws-expose-siemens-protection-relays-dos-attacks) which inform you that the malware's name is in fact `Industroyer`.
The flag therefore was: `flag{Industroyer}`