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CertNexus CFR-410 Exam - Topic 3 Question 23 Discussion

Actual exam question for CertNexus's CFR-410 exam
Question #: 23
Topic #: 3
[All CFR-410 Questions]

During a malware-driven distributed denial of service attack, a security researcher found excessive requests to a name server referring to the same domain name and host name encoded in hexadecimal. The malware author used which type of command and control?

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Suggested Answer: B, E

by Tonette at Oct 16, 2023, 04:50 PM

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Dean
5 months ago
I agree, Dnscat2 fits the description perfectly!
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Princess
5 months ago
Wait, are we sure it’s not FTP? That seems odd.
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Teri
5 months ago
Definitely sounds like a custom channel setup.
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Antonio
6 months ago
I thought IRC was more common for this type of attack.
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Aretha
6 months ago
Dnscat2 is often used for C2 in these cases.
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Antonio
6 months ago
I keep mixing up Dnscat2 and custom channels; both seem like they could fit, but I lean towards Dnscat2 for this scenario.
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Lanie
6 months ago
This question feels familiar; I think we had a practice question about malware using DNS for communication.
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Socorro
6 months ago
I'm not entirely sure, but I think IRC is more about chat and not specifically for DDoS attacks.
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Anjelica
7 months ago
I remember studying Dnscat2 in class, and it uses DNS for command and control, which seems relevant here.
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Salena
7 months ago
The question mentions a distributed denial of service attack, so I'm thinking the malware is trying to hide its command and control channel. That makes me suspect it's using a custom channel rather than a standard protocol like IRC or FTP.
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Gail
7 months ago
Okay, so the malware is using excessive requests to a name server, which points to a DNS-based command and control. I'm pretty sure the answer is Dnscat2.
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Lyla
7 months ago
This seems like a tricky one. I'll need to think through the details carefully to figure out the right command and control method.
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Hortencia
7 months ago
Hmm, the hexadecimal encoding of the domain and host name is a good clue. I'm leaning towards Dnscat2 as the answer, but I want to double-check my understanding.
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Cordelia
7 months ago
This is a tough one, but I feel confident in my knowledge of audits and management reviews. I'll carefully analyze each statement and choose the correct answer.
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Jani
7 months ago
I'm pretty sure the ABC approach is about classifying inventory based on the total amounts required, so I'll go with option B.
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Deeanna
7 months ago
Okay, I think I've got this. The key is to prevent the packets from taking the direct path, so I'll go with option B to set L2 Unknown Unicast to Hardware Proxy.
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Charolette
7 months ago
From my practice questions, I feel like Service Requests can be handled by the Service Desk staff, which might make statement 3 true.
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Luther
12 months ago
FTP? Seriously? That's like using a carrier pigeon to send your malware instructions. Dnscat2 all the way, baby!
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Myong
11 months ago
C) Custom channel
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Anglea
11 months ago
B) Dnscat2
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Shelia
11 months ago
A) Internet Relay Chat (IRC)
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Nathan
1 year ago
IRC? Really? What is this, the early 2000s? Gotta be Dnscat2, that's the newest and most sophisticated-sounding option.
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Mirta
11 months ago
Dnscat2 is the way to go for this type of command and control.
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Art
11 months ago
Definitely not FTP, that's too basic.
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Dominga
11 months ago
Yeah, IRC seems outdated for this kind of attack.
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Dorthy
12 months ago
I think it's Dnscat2 too, sounds more advanced.
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Aleisha
1 year ago
I'm not sure, but I think C) Custom channel could also be a possibility.
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Brunilda
1 year ago
Custom channel? Sounds like the malware author was trying to be a special snowflake. I'll go with B, Dnscat2, it's the most technical-sounding one.
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Lauryn
11 months ago
Yeah, it seems like the most likely choice for this scenario.
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Josephine
11 months ago
I agree, Dnscat2 does sound pretty technical.
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Lorenza
1 year ago
Dnscat2? Sounds like a dance move to me! But hey, at least it's not FTP - that's so 90s.
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Shenika
1 year ago
I agree with Sophia, Dnscat2 makes sense in this scenario.
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Sophia
1 year ago
I think the answer is B) Dnscat2.
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