CertUtil Qualms: They Came to Drop FOMBs

This blog post covers an interesting intrusion attempt that Mandiant Managed Defense thwarted involving the rapid weaponization of a recently disclosed vulnerability combined with the creative use of WMI compiled “.bmf” files and CertUtil for obfuscated execution. This intrusion attempt highlight...

Watch Out! Microsoft Spotted Spike in Astaroth Fileless Malware Attacks

Security researchers at Microsoft have released details of a new widespread campaign distributing an infamous piece of fileless malware that was primarily being found targeting European and Brazilian users earlier this year. Dubbed Astaroth , the malware trojan has been making the rounds since at...

Dismantling a fileless campaign: Microsoft Defender ATP’s Antivirus exposes Astaroth attack

The prevailing perception about fileless threats, among the security industry’s biggest areas of concern today, is that security solutions are helpless against these supposedly invincible threats. Because fileless attacks run the payload directly in memory or leverage legitimate system tools to r...

Google Android Qualcomm Closed Source Component Buffer Overflow Vulnerability (CNVD-2019-24144)

Android is a Linux-based open source operating system from Google and the Open Handheld Alliance OHA. A closed-source component buffer overflow vulnerability exists in the Qualcomm closed-source component in Android. An attacker could exploit this vulnerability to cause a buffer overflow when...

The Fileless, Non-Malware Menace

There’s an old expression: if it looks like a duck, walks like a duck, and quacks like a duck, then it must be a duck. What happens, though, if the duck in question is malware that doesn’t behave like typical malware? Namely, it doesn’t drop a file on your disk to infect your computer, hijack...

CVE-2018-11746

In Puppet Discovery prior to 1.2.0, when running Discovery against Windows hosts, WinRM connections can fall back to using basic auth over insecure channels if a HTTPS server is not available. This can expose the login credentials being used by Puppet Discovery...

Excerpts from Modern Bank Heists – Non Malware Attack Methods

Carbon Black recently published a report on the latest non-malware attack methods, and how to counteract them. For more information about how Cb Defense, Carbon Black's NGAV + EDR solution, helps enterprises address their endpoint security challenges, check out our weekly Cb Defense Live Demo,...

March 22, 2018—KB4088882 (Preview of Monthly Rollup)

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March 22, 2018—KB4088889 (OS Build 14393.2155)

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“Ready Player One” – Are you Ready to Protect Your Endpoints from the Bad Guys?

At times it can feel like a game as you watch the cyber-breach scorecards. Yahoo 3 billion users, Equifax 143 million consumers, Uber 57 million users, Imgur 1.7 million users are just a sample of the companies that have released new information on large breaches in the last few months...

September 28, 2017—KB4038801 (OS Build 14393.1737)

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WMI Event Subscription Persistence Exploit

This Metasploit module will create a permanent WMI event subscription to achieve file-less persistence using one of five methods. This module requires Metasploit: http://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require 'msf/core/exploit/powershell'...

WMI Event Subscription Event Log Persistence

This module will create a permanent WMI event subscription to achieve file-less persistence using an event filter that will query the event log for an EVENTIDTRIGGER default: failed logon request id 4625 that also contains a specified USERNAMETRIGGER note: failed logon auditing must be enabled on...

April 18, 2017—KB4015553 (Preview of Monthly Rollup)

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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...

Do You See What I CCM?

SCCM Software Metering Reviewing forensic keyword searches can be confusing because it is often difficult for an analyst to determine the source of the various structures that contain string matches. One such structure belongs to Microsoft's System Center Configuration Manager's SCCM software...

Do You See What I CCM?

SCCM Software Metering Reviewing forensic keyword searches can be confusing because it is often difficult for an analyst to determine the source of the various structures that contain string matches. One such structure belongs to Microsoft's System Center Configuration Manager's SCCM software...

Increased Use of WMI for Environment Detection and Evasion

Introduction Throughout the past few months, FireEye Labs has observed an increased use of Windows Management Instrumentation WMI queries for environment detection and evasion of dynamic analysis and virtualization engines. WMI provides high-level interaction with Windows objects using C/C++,...

WMI vs. WMI: Monitoring for Malicious Activity

Hello my name is: WMI WMI has been a core component of Windows since Windows 98, but it is not exactly old wine in a new bottle. WMI more closely resembles that bottle of ‘61 Bordeaux wine that continues to impress us as it ages and matures. WMI was developed as Microsoft’s interpretation of...

Incident Response Suite: CimSweep

Incident Response Suite used to engage in offensive reconnaissance CimSweep is a suite of CIM/WMI-based tools that enable the ability to perform incident response and hunting operations remotely across all versions of Windows. CimSweep may also be used to engage in offensive reconnaisance without...