All articles tagged as:

low-level

Analysing RPC With Ghidra and Neo4j

Hunting for new lateral movement techniques or interesting ways to execute code can be a nice way to sink some free time. With Windows spawning numerous RPC services on boot, finding unusual execution techniques is sometimes as simple as scratching just below the surface. And often the payoff far outweighs the time to discovery, with SOC or EDR vendors focusing on the more common published techniques, identifying a new way to introduce code execution on a host can throw a spanner in the works of the investigating team.In previous posts I've tried to look at different ways to mix up common atta…

Read more »

Evading Sysmon DNS Monitoring

In a recent update to Sysmon, a new feature was introduced allowing the ability to log DNS events. While this gives an excellent datapoint for defenders (shout out to the SysInternals team for continuing to provide and support these awesome tools for free), for us as attackers, this means that should our implant or payloads attempt to communicate via DNS, BlueTeam have a potential way to pick up on indicators which could lead to detection.An obvious place where this may affect a campaign is C2 over DNS, where numerous requests will be logged, potentially giving the game away.  In the event I c…

Read more »

Exploring Mimikatz - Part 2 - SSP

If you haven't had a chance to check it out, take a look here. Continuing on, in this post we will review what has become a nice way of subverting security controls added by Microsoft to prevent dumping of credentials, as well as extracting credentials as they are provided by a victim.…

Read more »

Exploring Mimikatz - Part 1 - WDigest

We’ve packed it, we’ve wrapped it, we’ve injected it and powershell’d it, and now we've settled on feeding it a memory dump, and still Mimikatz remains the tool of choice when extracting credentials from lsass on Windows systems. Of course this is due to the fact that with each new security control introduced by Microsoft, GentilKiwi always has a trick or two up his sleeve. If you have ever looked at the effort that goes into Mimikatz, this is no easy task, with all versions of Windows x86 and x64 supported (and more recently, additions to support Windows on ARM arch). And of course with the s…

Read more »

Silencing Cylance: A Case Study in Modern EDRs

In this blog post we will explore some of our findings that might assist red teamers operating in environments where CylancePROTECT is in place and briefly touch on CylanceOPTICS, a complementary solution that provides rule based detection to the endpoint.…

Read more »