Questions tagged [scan]

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1answer
116 views

Gmail warns about encrypted PDF file

I recently received a PDF file that, when attached to a gmail message, causes a warning to be displayed as follows: Encrypted attachment warning – Be careful with this attachment. This message ...
1
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1answer
34 views

Security pattern for third party uploads to Azure blob container

Scenario: Vendor 1 needs to upload data (.json, compressed .csv files, images and video) to an Azure blob storage container owned by Vendor 2 Vendor 1 is issued a limited duration SAS token each day ...
3
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1answer
66 views

Why are full port scans more susceptible to being logged than half-open port scans?

Many resources I come across state that one major advantage of full-port scans (e.g. SYN scans) is the fact that there is a lower risk of being logged. But why? In my opinion, the sequence of ...
57
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3answers
9k views

eBay web site tries to connect to wss://localhost:xxxxx - is this legit or they have some Malware JS running?

In helping a corporate user log on to eBay, I noticed that when on the login page, a stream of errors were coming up in the Firefox JS Console about not being able to connect to wss://localhost. This ...
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2answers
139 views

Why is my computer connected to amazon instances

When I run the command netstat -a to see the actual connections on my computer, I see all the time that my computer is connected to something like this ec2-xx-xx-xx-xx, not just one address it changes ...
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0answers
51 views

Spike in activity with port 3379 (SOCORFS)

My personal IPs on AWS are being scanned for 3379. Apparently, this is SOCORFS, registered to one Hugo Charbonneau. This port is getting scanned a lot more often in recent months: https://isc.sans.edu/...
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0answers
140 views

Investigate an unknown device connected to router

On my router(Virgin Media) I found a device labelled as "unknown" I often see the router not assigning the device name but I do have a clue about which device is. However this specific device got me ...
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1answer
87 views

Using an active or passive scan, can I detect all devices connected to or transmitting via a Wifi network?

I know that it's possible to do a passive scan on all channels to see if an access point sends a beacon. However, is it also possible to listen to general Wifi traffic on that channel and assemble a ...
2
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1answer
89 views

Why would I use an ACK scan over a FIN scan and vice versa?

I understand that both scans return RST packets and you can use this to scan hosts behind poorly configured firewalls. Is the idea to use both in case the firewall doesn't check for one? For example ...
0
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1answer
62 views

How does Burp update XSS/vulnerability scanning rules/payloads?

The first point, that it updates with new release. So if somebody discovered new payload for popular frameworks, it will be in burp only with new release. Does Burp app load payloads from Internet ...
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2answers
114 views

Public IP Address to be tested legally? [closed]

According to this question on Quora: Scanning a public IP address can be a cyber crime. But there are a few public IPs that can be used for testing purposes such as 45.33.32.156 which is belong ...
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1answer
79 views

How to check big video file if can't check it entirely?

There size limit on VirusTotal, some videos are very big. What if cut off part from the video and send part of it. Is it possible? What part of it, where malware can be?
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0answers
148 views

Where to run long automated scans? [closed]

I'm trying to run some automated scans without stopping for long periods of time (each scan can take anywhere from 8 hours to 3 days). I currently don't have a PC I can leave running for many days ...
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0answers
19 views

IS saving attachment from outlook email to disk to enable reading of file content safe?

I am trying to make sure that the emails attachments are 'what they say they are'. I am using strings.exe https://docs.microsoft.com/en-us/sysinternals/downloads/strings and exiftools.exe https://...
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3answers
971 views

Authenticated vs Unauthenticated network scans

What are the differences between authenticated and unauthenticated network scans? Do they show the same results? In which scenario should both be used?
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1answer
4k views

My router is getting port scan attacks [duplicate]

My internet suddenly cut out yesterday, i checked the router and it looked like nothing is wrong. I looked at the logs and i see this 2019-08-18 12:50:39 Security Warning Detect UDP port scan ...
1
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1answer
149 views

Mindlessly clicked days old phishing email link appeared dead

Was multitasking and mindlessly clicked Squarespace phishing email. Page didn't load, and right away I realized my mistake. Completed several malware scans which came back clean. The button link ...
1
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1answer
68 views

RHEL7 SSGv0.1 2.2.3 Unauthorized SUID/GUID executables

We are upgrading to RHEL 7.6. My Nessus scanner is giving me the following message: 2.2.3.c-d Mandatory Review Required: Find unauthorized SUID/GUID System Executables RHEL7 SSGv0.1 2.2.3 Unauthorized ...
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1answer
423 views

How do I investigate a suspicious link?

I made a RuneScape account about a week ago. I stupidly responded to a scam by clicking on a link provided to me in the game. I think I may have a keylogger, which would explain why my new account was ...
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2answers
155 views

Is VirusTotal useful for finding malware in a WordPress database SQL export?

Does VirusTotal detect malware in an SQL export? I have an infected WordPress site. I removed the malware with various tools, however I know from experience, that sometimes it hides itself somewhere ...
6
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4answers
799 views

Do mail servers follow links in emails as part of a security scan before inbox delivery?

I've implemented a passwordless login using a magic link and email. The link can be used only once. One customer is complaining that once they click the link, the page reports that the link is already ...
0
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1answer
141 views

Modified NMAP script: variable 'host' is not declared [closed]

I am modifying an nse script, ssl-cert.nse, which was already made for enumerating ssl certificates. I want to output the host ip and the port number in a line of the ssl certificate output. However, ...
3
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1answer
107 views

Verifying Host Sterility After Running Malware Tests on Virtual Machine

I know that "VM escape" is becoming a common issue now with malware testing. I'm just wondering if there's any way of verifying if the host system is clean from any infection after running a malware ...
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1answer
6k views

What is this service? [closed]

Fairly new to infosec and am going through a course on nmap. While scanning I found this and it looked interesting and was wondering if you all had any information on this? This is the port,state and ...
1
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0answers
220 views

nmap - No Ports Open [closed]

I bought a Tonbux Smart WiFi Plug WL-SC01 and I'm doing some hack tests on it for educational purposes. I used nmap to check for both UDP and TCP ports but both return that there are no open ports at ...
1
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1answer
164 views

Determine victim of port scan's OS

I am taking part in a practice sandbox, and have a pcap file in Wireshark: with the traffic depicting a Vertical Port Scan. Is there anyway to find out the "victim"'s Operating System? The packets are ...
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1answer
162 views

Is there anywhere we can scan projects (PHP, JAVA…) for vulnerabilities, like VirusTotal.com does (All-in-one)? [closed]

Virustotal is excellent in its field. Does there exist any tool (or site) where we could upload (or that could be also an offline PC version) to test projects or websites (PHP, Java, whatever) for ...
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2answers
2k views

How secure is the fingerprint sensor in the Pixel 3?

As far as I understand different fingerprint scanners have different security levels. Old fingerprint print scanners could be fooled quite easily as the CCC (Chaos Computer Club) demonstrated. How ...
2
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1answer
58 views

Given a list of components and versions, how can I check if any of them have known vulnerabilities?

In this case, I have a list of names and versions, but not access to any source code or binaries. E.g. ComponentA 2.6.6 ComponentB 1.1 ComponentC 0.12 The list is more than 300 components long, so ...
2
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1answer
404 views

Scanning a binary against YARA rules dictionary

I have found a malware binary, Which i am curious to see what patterns has been found from this file. Also i have a collection of ~1000 ioc's and yara-rule's related to Malwares and RAT's. I used Loki,...
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3answers
117 views

Scan for infection of malicious files manually?

I know there are options of free security softwares out there that do good job like malwarebytes, but I really want to learn how to scan for possible threats of malicious files on your pc manually. I ...
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2answers
90 views

What is the recommanded periodicity for antivirus RAM and disk scans?

Antivirus scans consumes resources, and far more when the full disk or RAM is scanned. Anyway, files are scanned before opening and often when they enter the system, so periodic scans on this point of ...
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1answer
479 views

Virustotal detecting threats in Suricata rule set

Virustotal scans are detecting threats from the Suricata default rule pack located https://rules.emergingthreats.net/open/suricata-4.0/ Is this a false positive? https://www.virustotal.com/#/file/...
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3answers
5k views

Port sweep vs port scan

I was asked this question in an interview: "What is a port sweep?" When I replied with port scan he said that my answer was not a scan, it was a port sweep. I googled and found "tcp sweep: but not "...
2
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1answer
189 views

Port Knock logs suggest machine has been compromised?

On my CentOS machine, all my ports are filtered with the Iptables rule: DROP all -- * * 0.0.0.0/0 0.0.0.0/0 So from the Internet, every port timeouts. The only way to ...
4
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1answer
784 views

How to distinguish between “normal internet” Port scan and more “serious” port scan preparing attack?

In a complete network infrastructure, with firewalls, routers, servers supervised by a SIEM, LogPoint here. Of course, there is a private network and public servers. in the LogPoint there is an ...
0
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1answer
920 views

Modify Win OS banner to avoid OS detection

I would like to modify Win OS banner to defeat OS detection from scanning tools like Nmap for example. Although, I know that Nmap does not take into account just the banner to do OS detection.
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2answers
9k views

Quick scan of a /8 subnet with nmap

I am trying to scan a full subnet (10.0.0.0/8) using nmap. I am using the command nmap –v –sn 10.0.0.0/8. I specifically just want to detect active hosts without scanning ports because I thought that ...
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0answers
196 views

How to use a web vulnerability scanner to autenthicate through in order to do the scan

I thinking about use a various mix of different scanner such as: Burp-suite Acunetix Vulnerability Scanner Arachni Owasp Zed Attack Proxy Project Vega W3af though we have Active directory that is ...
1
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1answer
105 views

Why are network scans coming from my router?

I'm seeing notifications from my antivirus software that scans are being blocked. Some are from external IP addresses, but others are coming from my router. For example, here's the text from one ...
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1answer
2k views

Port scans: 'traffic denied' VS 'close - age out'

I have been investigating logs from the firewall (Juniper) and I've found out that when someone is portscanning my website, the majority of the traffic through different tcp/udp ports is denied (...
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1answer
1k views

“Windows Unquoted Search” Fix?

Now I may have missed it but I was reading up on common windows issues and "Windows Unquoted Search Path or Element can allow local privilege escalation" keeps appearing. I am amazed that this is ...
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1answer
1k views

nmap results after evading firewall

I've done an nmap scan on my server with an F5 firewall protecting it. I used the nmap command nmap -vvv -f -Pn -mtu 8 -sN -oN nmap-results.txt 192.168.22.102 I had this result but it seems ...
2
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1answer
54 views

Downloaded MailMergePro file seems to have virus attached

I downloaded MailMerge Pro from http://www.standss.com/emailmerge/download_process.asp website and i scanned it on VirusTotal.com and two of the antivirus flagged it. I am sharing the link for same, i ...
1
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1answer
2k views

Clamscan: infected files found

From time to time, I perform a scan with clamscan. I'm on Archlinux. Clamscan database is updated before each scan. Today clasmscan reported 19 infected files: ./.cache/mozilla/firefox/qyq0onej....
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1answer
3k views

how to detect udp port scan in suricata?

I'd like to detect udp port scan in Suricata. I searched google, but I didn't manage to find Suricata rule for detecting UDP port scan attempts. I saw before a snort rule for this scan. How can we ...
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2answers
3k views

Service running on a closed port?

I just finished scanning a host and I found something unusual. My question is regarding port 50000 and 50002. Nmap shows that these ports are closed and also identifies the services running on them!...
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2answers
73 views

Scan for a specific virus type?

Is it possible to tell an antivirus which specific virus type (worm, macro etc) to scan for? Assuming I know the type of virus and just want to save time and scan for it specifically instead of ...
1
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2answers
1k views

Scan my network externally [closed]

So I'm about to undertake Cyber Essentials as our first step towards nailing as best as we can our security. I have done quite a lot of work on locking down our network, however, I would like audit ...
0
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1answer
135 views

Symantc Endpoint protection keeps detecting clean file as risk

I downloaded some files from website using FTP and these websites have been developed using .net and any .dll file is flagged as Risk by our Antivirus. our IT Made some changes to antivirus on my ...