If there’s one thing security professionals appreciate, it is new open-source tools that make Windows internals more transparent. Cisco Talos’s recently released DispatchLogger offers fresh insights into late-bound COM object interactions, which typically evade straightforward detection by defenders.
COM (Component Object Model) underpins much of the Windows operating system, enabling processes to communicate and adapt their behaviour dynamically. The IDispatch interface is particularly elusive due to its late-binding nature—objects can receive method calls at runtime with little visibility afforded to security tools. This characteristic is frequently exploited by malware authors to evade both static detection and forensic analysis.
DispatchLogger distinguishes itself by employing proxy interception. Rather than modifying or patching binaries, it observes and records interactions transparently, capturing comprehensive details without alerting the software involved or causing disruption. This gives malware analysts real-time insight with a greatly reduced risk of interfering with the behaviour under investigation.
For threat researchers, DispatchLogger offers the ability to detect suspicious COM calls in evasive malware samples, analyse obscure loader tactics, and gain a clearer understanding of how legitimate applications leverage late-bound COM—vital information for tightening endpoint controls. For security teams in enterprise and smaller environments alike, this increased visibility can be key to improving detection and response as attackers continue to exploit the gaps between observable and actual system behaviour.
The launch of DispatchLogger signals a promising step forward for transparency in malware analysis, addressing a persistent blind spot for security teams. Its open-source nature and transparency-first approach provide defenders with a practical advantage against evolving threats in the Windows ecosystem.
Original Story: https://blog.talosintelligence.com/transparent-com-instrumentation-for-malware-analysis/
