Researched and written by Rindert Kramer and Dirk-jan Mollema Introduction During internal penetration tests, it happens quite often that we manage to obtain Domain Administrative access within a few hours. Contributing to this are insufficient system hardening and the use of insecure Active Directory defaults. In such scenarios publicly available tools help in finding and exploiting these issues … Continue reading Escalating privileges with ACLs in Active Directory
Category: Uncategorized
Lessons learned from a Man-in-the-Middle attack
It’s become a widely accepted mantra that experiencing a cyber breach is a question of ‘when’ and not ‘if’. For Fox-IT ‘if’ became ‘when’ on Tuesday, September 19 2017, when we fell victim to a “Man-in-the-Middle” attack. As a result of the multi-layered security protection, detection and response mechanisms we had in place, the incident … Continue reading Lessons learned from a Man-in-the-Middle attack
Criminals in a festive mood
This morning the Fox-IT Security Operations Center observed a large number of phishing e-mails that contained a link to a downloadable zip file. Anyone downloading and opening that zip file would infect themselves with banking malware, that would subsequently try to lure the victim into divulging their credit card information. So far nothing new: e-mail … Continue reading Criminals in a festive mood
Fox-IT debunks report on ByLock app that landed 75,000 people in jail in Turkey
The Turkish government has been actively pursuing the prosecution of the participants of the Gülen movement in what it calls “the Fetullahist Terrorist Organization/Parallel State Structure (FETÖ/PDY)”. To this end, the Turkey’s National Intelligence Organization (Millî İstihbarat Teşkilatı or MİT in Turkish) has investigated the relation of a publicly available smart phone messaging application called … Continue reading Fox-IT debunks report on ByLock app that landed 75,000 people in jail in Turkey
FAQ about PETYA/GOLDENEYE/PETR outbreak
Revision history: 29th of June, 2017 18:00 (UTC +2) - Update 2 (current) - Added Q11 28th of June, 2017 22:00 (UTC +2) - Update 1 - Initial FAQ Q1 Is the Petya attack still in progress? A: The initial attack vector appears to have been the accounting software M.E.Doc, for which a malicious software update … Continue reading FAQ about PETYA/GOLDENEYE/PETR outbreak
Liveblog: Huge Petya ransomware wave
Revision history: Update 2 (current): 28th of June, 2017 22:45 (UTC +2) - Added Snort rule for detection purposes Update 1: 27th of June, 2017 18:04 (UTC +2) - Initial post A new variant of the Petya ransomware started to spread havoc within various companies around the world the 27th of June 2017 . The … Continue reading Liveblog: Huge Petya ransomware wave
FAQ on the WanaCry ransomware outbreak
Last updated: May 16th 2017 A ransomware variant known as WanaCry/WanaCrypt0r has spread on a massive scale around the world since the 12th of May 2017. For more information about the context with regards to this WanaCry variant, see also our earlier blog. The section below outlines the frequently asked questions and corresponding answers. Q: … Continue reading FAQ on the WanaCry ransomware outbreak
