Sagie Dulce. Some of the recent ransomware attacks used the following techniques to spread laterally in the network: Exploiting weak passwords used in the systems of the same network. This post will cover some quick research done by poking around the Windows persistence technique of Port Monitors aka Mitre technique T1547.010. These key takeaways are noted: We now have some background on a vector that we could (potentially) use to develop our own POC WinRM tools. I’ve described how the Cloud Plane can be used to redefine the Network Plane. To accomplish this, we will walk through the process of building a simple proof-of-concept .NET C# tool. Why this for Lateral Movement? 2 Background 2.1 WindowsLateralMovementAttacks From a .NET perspective, this makes COM objects appear as .NET objects and “simplifies” the managed code necessary to work with those respective COM objects. This post will follow a scenario (from the viewpoint of a red teamer) when your attacking box has internal network access, but is NOT joined to the domain. I believe there are more interesting research opportunities in this area (maybe a CSharp “PSSession” capability?). Most of you are probably aware that there are only so many ways to pivot, or conduct lateral movement to a Windows system. January 23, 2017 by enigma0x3. Change ). on a cloud-admin’s workstation is pretty much game over. It is also worth mentioning that other 3rd party WinRM capabilities exist outside of Windows including: At the time when I was investigating this topic, I noticed that there was not really much offered in the way of Windows tooling outside of PowerShell that leveraged WinRM for remote command execution/lateral movement. At the end weâll briefly run through some artifacts and logs. ( Log Out / Some of the most popular methods used by attackers are credential theft and Pass the Ticket attacks. I’m going to call it the User Plane. Let’s look at a few methods this can be done. Lateral movement - PowerView PowerView is a PowerShell tool to gain network situational awareness on Windows domains No administrative credentials required My personal favorite Very useful for both “Blue” and “Red” Teams It contains a load of useful functions to identify possible issues in AD environments » net * Functions As discussed in Matt Graeberâs âAbusing Windows Management Instrumentation (WMI) to Build a Persistent, Asyncronous, and Fileless Backdoorâ whitepaper, WinRM(.vbs) allows for remote interaction of WMI objects over WinRM transport. Lateral movement techniques are widely used in sophisticated cyber-attacks such as advanced persistent threats (APTs). Found inside – Page 113movement. Lateral movement and pivoting are similar concepts. Pivoting is to re-focus attack efforts on a new target once ... configuring malware as an auto-start service, or setting an automatically run element in the Windows registry. Lateral movement is one of the key indicators when you ACTUALLY have an APT in your network. Although the offensive trends are shifting, WinRM can still a viable option (at least, in my opinion). techniques of detecting lateral movements on Windows systems, it may also be an inspiration for other cases, where appropriate logging exists. Get access to one of these special accounts and the world (or at least the cloud) is your oyster. Letâs take a quick look at a few WinRM capabilities (outside of PowerShell): Winrs.exe is a built-in command line tool that allows for the execution of remote commands over WinRm with a properly credentialed user. Both of these tactics consist of relevant techniques that attackers have been using in the wild. Six Stages of an APT attack Found inside – Page 6-244System and network discovery techniques normally occur throughout an operation as an adversary learns the environment. ... of behavior that could lead to other activities, such as Lateral Movement, based on the information obtained. Lateral movement techniques are leveraged by attackers to move throughout a network, slowly increasing privileges until they achieve their end goal. Found inside – Page 1094arXiv preprint arXiv:1804.04177 (2018) Dosfuscation: Exploring the depths of Cmd.exe obfuscation and detection techniques Research Report Released: Detecting lateral movement through tracking event logs (version 2). Found inside – Page 17With the B-scan type presentation, it is possible to estimate the depth of reflectors and their lateral extent along the axis of transducer movement. The depth resolution is dependent on the same factors as for the A-scan technique, ... Methods covered in this post also bleed into general Windows lateral movement techniques - not just double-hopping solutions. I tested PSExec with the ASR rule enabled using the Invoke-TheHash toolkit and nothing prevented creating a Windows Service to create a … This global cyber attack made use of a largely unpatched Windows exploit for lateral movement. Lateral account movement is a technique used by attackers to traverse through a network, starting from a compromised host. The key techniques used for lateral movement are: 1) Internal reconnaissance. Visual Studio parses the Type Library and maps COM interfaces and classes to a namespace structure within an auto-generated managed interop library (DLL) that is included within the project. This exploit path is also a concern in AWS Lambda. Exploitation RDP 2011. With the rise of PowerShell well over a decade ago, most ethical … Using dnSpy, we can âdecompileâ the assembly to view the source code: We can see how the DLL assembly wraps up the interfaces and methods/properties/etc. Detecting Lateral Movement Using Sysmon and Splunk Detecting an attacker moving laterally in your environment can be tough. Found inside – Page 110I want to take a moment to introduce the concept of harvesting Windows password hashes from compromised machines. ... lateral movement, you're going to learn all about the mighty Pass-the-Hash technique and how attackers and pentesters ... Lateral movement is hard, if not impossible, for prevention controls to block automatically. ( Log Out / Lateral Movement in Microsoft Windows. The attacker will t… Lateral movement techniques are one of the most common approaches attackers can use to infiltrate your network and obtain privileged access to your credentials and data. Change ), You are commenting using your Facebook account. When using AWS Organization, the parent account creates one of these cross account roles in the child account by default (with a guessable name and full admin permissions!!). Is there an attack vector here? Found inside – Page 329... important to understanding the initial attack vector, lateral movement techniques, and the impact on affected systems. The Windows Background Activity Moderator records information about executables that have been run on the system ... Keep in mind these methods may not be very practical in accomplishing our lab scenario goals. For .NET, Visual Studio makes integrating (many) COM components (objects) quite seamless. Found inside... perform post-exploitation techniques. Chapter 3 Lateral movement, remote procedure call/distributed component object model (RPC/DCOM), PsExec, Windows management instrumentation (WMI), scheduled tasks, PowerShell (PS) remoting/WinRM ...
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