Threat Analysis Tools

I’ve not blogged in a while, but I wanted to put down a note of some useful tools people can use to help them combat cyber crime.

This isn’t going to be an in depth look at each tool, however I do want to, in the near future, try and do some demos/videos etc. of how to investigate potential/suspected or identified threats. I’ll drop a list of some of the useful tools below and also do a quick demo of investigating an event (from this blog)

Education

Protective DNS (PDNS) by NCSC UK adds UK schools

This week NCSC have begun accepting UK schools for access to the PDNS.

https://www.ncsc.gov.uk/blog-post/introducing-pdns-for-schools

to register (if you are eligible) use this URL: https://www.protectivedns.service.ncsc.gov.uk/pdns

you can view the terms and conditions here: https://www.signin.service.ncsc.gov.uk/terms-and-conditions

PDNS is a protective DNS service which helps protect public sector organisations (and private sector services who deliver government services)

Government
Healthcare
Local Authorities
MOD

https://www.ncsc.gov.uk/information/pdns

PDNS is delivered by Nominet. Read more “Protective DNS (PDNS) by NCSC UK adds UK schools” →

Threat Intel

Cisco IOS XE Incident Update

Update 30-10-2023 (fast publish)

This is a fast publish. Based on honeypot data from @SI_FalconTeam we can make some analysis:

The webshell has an authorisation header is 40 characters long. (it is unknown how this was generated)
The user agent in the sample: User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
The source IP: 192.3.101.11
The stages:
1. Check for webshell
- If not in place:
  1. Bypass Authentication (CVE-2023-20198
  )
- 1. Create a local LEVEL 15 User AccountSet IP HTTP/HTTPS SERVER and Enable Local Authentication (AAA)Use this account to conduct a device inventory.
- Inventory the System
- Kill the created Level 15 account

In the lab we have attacked HTTP and HTTPS and have been able to get AUTH bypass. (thanks @leak_ix)

Hacking

The Manual Version 2.0

Working in Cyber security can expose you to all kinds of information. I’m an offensive and defensive security architect and occasional (haha that’s daily right!) pew pew slinger (pentester) and I am also a threat intelligence practioner (CTI) (we need The Many Hats Club back!). Which is why sometimes when things appear on the internet I think I decide to take a look.

Education

Active Directory Attacks – “It’s cold out here”

Scenario

In this scenario it is assumed you do not have credentials, but you do have either adjacent or routable access to an Active Directory Domain Controller and can access common ports/services such as: LDAP, LDAPS, SMB, NETBIOS, KERBEROS, DNS

Hacking

Mobile Device Malware Analysis

Mobile devices present interesting challenges when it comes to:

Incident Response
Malware Analysis
Digital Forensics

Hacking

Stealthy Active Directory Username Enumeration with LDAPNomNom

My friend Lars and I were just talking about some of the research areas we are working on and randomly the conversation turned into “what shall we call it?” and then LDAPNomNom came up! So I whilst laughing (coz the name is lulz) with my buddy I downloaded and ran LDAPNomNom against a lab vm quickly! (Lars also fixed an error with readme.md that I pointed out coz my debug skillz ROCK! 😛 )

So here we have me doing username enumeration via LDAP Ping using LDAPNOMNOM!

Vulnerabilities

Microsoft Outlook Elevation of Privilege Vulnerability (CVE-2023-23397)

Regarding: CVE-2023-23397

This is a fast publish, use at own risk.

See guidance from Microsoft: CVE-2023-23397 – Security Update Guide – Microsoft – Microsoft Outlook Elevation of Privilege Vulnerability

If you need to mitigate the latest Outlook vulnerability which abuses an SMB/WebDav call using the Calendar invite feature you can consider the following:

Education

The Long Game: Persistent Hash Theft

CVE-2023-23397 enables a threat actor to send a calendar invite whereby the properties of the msg file can include a path for the reminder sound file. This is achieved by setting:

Leadership

Adopting an Attacker Mindset to Defend Healthcare

This post started as a reply to a great topic on LinkedIn, but I hit the character limit so now it’s a blog post!

Years ago I simulated attacks (authorized obviously for the people that have wild imaginations) on a customer which included a physical attack where I walked into a healthcare organization, armed with a suit a smile (and a USB key) I needed to gain access and attempt to move laterally and escalate privileges.