Full Report
Many people took a crack at “what tool will work to replace mangler, out of the box” and so we have a bunch of new tools to play with.. Steven’s answer of MS-Word or PowerPoint left us scratching our heads a little, and rezn threw in the added complexity of the app requiring valid certs.. (to answer rezn, i think you could avoid the SSL complications with judicious use of a detours app or echo-mirage from bindshell.net).
Analysis Summary
The provided article snippet is highly discursive, referencing community discussions around tools designed to replace or emulate the previous "Mangler" tool, likely in the context of penetration testing or vulnerability research (given the reference to SensePost and OWASP). It does not describe a specific piece of malware or a specific, detailed attack technique, but rather mentions several tools and concepts related to evading security controls or establishing connections.
As the primary focus is on tools and techniques mentioned in the discussion, the summary will focus on those identifiable entities.
# Tool/Technique: HTTP Mangler Replacement Discussion
## Overview
This summary details tools and techniques discussed in an informal context as potential replacements for the original "Mangler" tool. The context revolves around achieving functionality (perhaps tunneling or obfuscation) and dealing with certificate validation issues in these replacement methods.
## Technical Details
- Type: Tool (Discussion Topic)
- Platform: Generally implied to be Windows/Desktop (due to MS-Word/PowerPoint mention) and Web/Network services (due to SSL/certs).
- Capabilities: Discussed replacements aim to replicate the function of "Mangler," potentially involving obfuscation or protocol manipulation.
- First Seen: Context implies previous existence of "Mangler" around February 2008.
## MITRE ATT&CK Mapping
*Since this is a discussion about potential tool replacement, direct mapping is challenging. However, the tools mentioned relate to network communication modification and evasion.*
- **TA0011 - Command and Control**
- T1071 - Application Layer Protocol
- T1071.001 - Web Protocols (as WebScaramb-NG is mentioned)
- **TA0005 - Defense Evasion** (Implied by the need to replace a tool and the mention of Detours)
- T1564 - Hide Artifacts (Detours is a library used for API hooking/detouring)
## Functionality
### Core Capabilities (Of Mentioned Replacement Tools)
- **MS-Word/PowerPoint:** Used as an application layer channel for communication or data embedding.
- **WebScarab-NG:** A web application security assessment tool for intercepting, inspecting, and modifying traffic.
### Advanced Features (Of Mentioned Evasion/Hooking Tools)
- **Detours:** A library for application software enhancement, primarily used for API hooking (intercepting and rerouting process function calls).
- **echo-mirage (from bindshell.net):** Mentioned in the context of avoiding SSL complications, suggesting it might be a tool for handling or manipulating encrypted or tunneled connections.
## Indicators of Compromise
*No specific IoCs for a single piece of malware are provided. IoCs relate to the mentioned tools:*
- File Hashes: N/A
- File Names: N/A
- Registry Keys: N/A
- Network Indicators: N/A (Tool usage is described, not active C2)
- Behavioral Indicators: Hooking behavior associated with the use of `detours.dll` or similar API interception methods.
## Associated Threat Actors
- No specific threat actors are associated with these general-purpose testing/utility tools from the context provided.
## Detection Methods
- Detection would focus on the operational use of the secondary tools mentioned:
- Detection of manipulation of system APIs associated with Microsoft Office processes.
- Detection of network traffic manipulation or inspection, typical of HTTP proxy testing tools like WebScarab.
- Detection related to connections that mimic or utilize components characteristic of echo-mirage functionality.
## Mitigation Strategies
- **Standard Office Security:** Implementing application control or macro restrictions, especially when discussing potential exploitation via MS-Word/PowerPoint.
- **Network Monitoring:** Deep Packet Inspection (DPI) to monitor deviations from expected application protocol behavior.
- **API Hooking Prevention:** Application whitelisting or control over DLL injection specific to trusted processes.
## Related Tools/Techniques
- **Mangler:** The original tool being replaced.
- **Detours:** API hooking library by Microsoft Research.
- **echo-mirage (bindshell.net):** Utility for handling network redirection or tunneling challenges.
- **WebScarab-NG:** OWASP tool for web application testing.