New Ransomware Variant "Nyetya" Compromises Systems Worldwide

Note: This blog post discusses active research by Talos into a new threat. This information should be considered preliminary and will be updated as research continues.Update 2017-07-06 12:30 EDT: Updated to explain the modified DoublePulsar backdoor.Since the SamSam attacks that targeted US...

Windows Credential Guard Disabled

Binary data wmicredguard.nbin...

WannaCry coda: Have you disabled SMBv1?

By now, if you're reading this blog, you probably have read about WannaCry. If not, please take a moment to review: Wanna Decryptor WNCRY Ransomware Explained Using Threat Intelligence to Mitigate Wanna Decryptor WannaCry WannaCry Update: Vulnerable SMB Shares Are Widely Deployed And People Are...

WMI Event Subscription Interval Persistence

This module will create a permanent WMI event subscription to achieve file-less persistence using an event filter that triggers the payload after the specified CALLBACKINTERVAL. If the persistence is not installed, it will keep triggering payloads to spawn. Additionally a custom command can be...

WMI Event Subscription Process Persistence

This module will create a permanent WMI event subscription to achieve file-less persistence using an event filter that triggers the payload when the specified process is started. Additionally a custom command can be specified to run once the trigger is activated using the advanced option...

WMI Event Subscription Logon Timer Persistence

This module will create a permanent WMI event subscription to achieve file-less persistence using an event filter that will trigger the payload after the system has a certain uptime. Payloads will trigger every minute until the set end time. Additionally a custom command can be specified to run...

WMI Event Subscription Persistence

This module will create a permanent WMI event subscription to achieve file-less persistence using one of five methods. The EVENT method will create an event filter that will query the event log for an EVENTIDTRIGGER default: failed logon request id 4625 that also contains a specified...

WMI Command Shell Wrapper: WMIcmd

WMI Command Shell Wrapper When doing low impact investigations and other similar activities you may want to minimize what is written to disk / obvious. This tool allows us to execute commands via WMI and get information not otherwise available via this channel. Purpose A small utility which only...

Microsoft Windows - ManagementObject Arbitrary .NET Serialization Remote Code Execution Exploit

Exploit for windows platform in category remote exploits Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1081 Windows: ManagementObject Arbitrary .NET Serialization RCE Platform: .NET 4.6, Powershell 4. Tested between Server 2016 and Windows 10 Anniversary Edition Class: Remote...

Microsoft Windows - ManagementObject Arbitrary .NET Serialization Remote Code Execution

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1081 Windows: ManagementObject Arbitrary .NET Serialization RCE Platform: .NET 4.6, Powershell 4. Tested between Server 2016 and Windows 10 Anniversary Edition Class: Remote Code Execution Summary: Accessing a compromised WMI serve...

Microsoft Windows - ManagementObject Arbitrary .NET Serialization Remote Code Execution

Microsoft Windows - ManagementObject Arbitrary .NET Serialization Remote Code Execution Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1081 Windows: ManagementObject Arbitrary .NET Serialization RCE Platform: .NET 4.6, Powershell 4. Tested between Server 2016 and Windows 10...

Windows: ManagementObject Arbitrary .NET Serialization RCE（CVE-2017-0160）

Windows: ManagementObject Arbitrary .NET Serialization RCE Platform: .NET 4.6, Powershell 4. Tested between Server 2016 and Windows 10 Anniversary Edition Class: Remote Code Execution Summary: Accessing a compromised WMI server over DCOM using System.Management classes or the Powershell...

WMI Based Agentless Post-Exploitation PowerShell RAT: WMImplant

WMImplant is a PowerShell based tool that leverages WMI to both perform actions against targeted machines, but also as the C2 channel for issuing commands and receiving results. WMImplant will likely require local administrator permissions on the targeted machine. It is designed to run both...

Dissecting One of APT29’s Fileless WMI and PowerShell Backdoors (POSHSPY)

Mandiant has observed APT29 using a stealthy backdoor that we call POSHSPY. POSHSPY leverages two of the tools the group frequently uses: PowerShell and Windows Management Instrumentation WMI. In the investigations Mandiant has conducted, it appeared that APT29 deployed POSHSPY as a secondary...

Dissecting One of APT29’s Fileless WMI and PowerShell Backdoors (POSHSPY)

Mandiant has observed APT29 using a stealthy backdoor that we call POSHSPY. POSHSPY leverages two of the tools the group frequently uses: PowerShell and Windows Management Instrumentation WMI. In the investigations Mandiant has conducted, it appeared that APT29 deployed POSHSPY as a secondary...

WMImplant – A WMI Based Agentless Post-Exploitation RAT Developed in PowerShell

Just over one year ago November 2015, I released WMIOps, a PowerShell script that enables a user to carry out different actions via Windows Management Instrumentation WMI on the local machine or a remote machine. WMIOps can: Start or stop a process. Return a list of all running processes. Power...

WMImplant – A WMI Based Agentless Post-Exploitation RAT Developed in PowerShell

Just over one year ago November 2015, I released WMIOps, a PowerShell script that enables a user to carry out different actions via Windows Management Instrumentation WMI on the local machine or a remote machine. WMIOps can: Start or stop a process. Return a list of all running processes. Power...

New Fileless Malware Uses DNS Queries To Receive PowerShell Commands

It is no secret that cybercriminals are becoming dramatically more adept, innovative, and stealthy with each passing day. While new forms of cybercrime are on the rise, traditional activities seem to be shifting towards more clandestine techniques that involve the exploitation of standard system...

Invoke-TheHash - PowerShell Pass The Hash Utils

Invoke-TheHash contains PowerShell functions for performing NTLMv2 pass the hash WMI and SMB command execution. WMI and SMB services are accessed through .NET TCPClient connections. Local administrator privilege is not required client-side. Requirements Minimum PowerShell 2.0 Import Import-Module...

Update Rollup 11 for System Center 2012 Virtual Machine Manager Service Pack 1

Update Rollup 11 for System Center 2012 Virtual Machine Manager Service Pack 1 Introduction This article describes the issues that are fixed in Update Rollup 11 for Microsoft System Center 2012 Virtual Machine Manager Service Pack 1 SP1. There is one update available for System Center 2012 SP1...