Full Report
The following is the information on Yara and Snort rules (week 3, November 2024) collected and shared by the AhnLab TIP service. 1 YARA Rules Detection name Description Source MAL_ELF_Xlogin_Nov24_1 Detects xlogin backdoor samples https://github.com/Neo23x0/signature-base 4 Snort Rules Detection name Source ET WEB_SPECIFIC_APPS Symphony PHP Symfony Profiler Environment Manipulation (CVE-2024-50340) https://rules.emergingthreatspro.com/open/ ET WEB_SPECIFIC_APPS Citrix Session […] 게시물 Weekly Detection Rule (YARA and Snort) Information – Week 3, November 2024이 ASEC에 처음 등장했습니다.
Analysis Summary
# Tool/Technique: xlogin backdoor
## Overview
The xlogin backdoor is a type of malware for which a YARA rule (`MAL_ELF_Xlogin_Nov24_1`) has been developed to detect its samples.
## Technical Details
- Type: Malware family
- Platform: ELF (Implied, likely Linux/Unix-like systems)
- Capabilities: Backdoor functionality (specific capabilities not detailed in the provided context)
- First Seen: Not specified in the context.
## MITRE ATT&CK Mapping
*Note: Since the provided context only lists a detection name, specific MITRE ATT&CK mappings require external analysis of the 'xlogin' malware family. Placeholder mapping based on 'backdoor' classification.*
- TA0011 - Command and Control
- T1071 - Application Layer Protocol
- T1071.001 - Web Protocols
## Functionality
### Core Capabilities
- Establishing remote access/control on compromised systems (as it is a 'backdoor').
### Advanced Features
- Specific advanced features were not detailed in the summary context.
## Indicators of Compromise
- File Hashes: Not specified in the context.
- File Names: Not specified in the context, but samples trigger the YARA rule: `MAL_ELF_Xlogin_Nov24_1`.
- Registry Keys: Not applicable (implied Linux ELF).
- Network Indicators: Not specified in the context.
- Behavioral Indicators: Detection relies on specific file content matching the YARA rule.
## Associated Threat Actors
- Not specified in the context.
## Detection Methods
- Signature-based detection: YARA rule `MAL_ELF_Xlogin_Nov24_1`.
- Behavioral detection: Not explicitly mentioned for this specific rule.
- YARA rules: `MAL_ELF_Xlogin_Nov24_1`
## Mitigation Strategies
- Implement robust endpoint detection capable of parsing and matching YARA signatures.
- File integrity monitoring for unusual ELF files appearing on systems.
- (General Endpoint Hardening) Restrict execution privileges where not strictly necessary.
## Related Tools/Techniques
- Other malware families detected via YARA rules shared in the same report (though not detailed).
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# Tool/Technique: Symfony Profiler Environment Manipulation (CVE-2024-50340)
## Overview
This detection addresses a vulnerability in the PHP Symfony framework related to the Profiler Environment, specifically cataloged as CVE-2024-50340.
## Technical Details
- Type: Vulnerability-related network activity / Configuration Exploitation
- Platform: Web Applications utilizing PHP Symfony framework
- Capabilities: Exploitation of the Symfony Profiler environment settings.
- First Seen: Associated with Week 3, November 2024 detections.
## MITRE ATT&CK Mapping
- TA0001 - Initial Access
- T1190 - Exploit Public-Facing Application
- TA0006 - Credential Access
- T1552 - Unsecured Credentials (Potential outcome depending on scope of manipulation)
## Functionality
### Core Capabilities
- Allows attackers to manipulate the environment settings via the Symfony Profiler functionality.
### Advanced Features
- Exploits the specific logic flaw defined in CVE-2024-50340.
## Indicators of Compromise
- File Hashes: Not applicable (network signature).
- File Names: Not applicable (network signature).
- Registry Keys: Not applicable.
- Network Indicators: Network traffic matching the Snort rule: `ET WEB_SPECIFIC_APPS Symphony PHP Symfony Profiler Environment Manipulation (CVE-2024-50340)`.
- Behavioral Indicators: Network connection attempting the specific manipulation.
## Associated Threat Actors
- Not specified in the context, but likely opportunistic exploitation targeting vulnerable installations.
## Detection Methods
- Signature-based detection: Snort rule `ET WEB_SPECIFIC_APPS Symphony PHP Symfony Profiler Environment Manipulation (CVE-2024-50340)` from Emerging Threats.
- Behavioral detection: Monitoring for anomalous request patterns targeting the profiler module.
- YARA rules: N/A
## Mitigation Strategies
- Patch or upgrade the affected Symfony components to address CVE-2024-50340.
- Ensure the Symfony Profiler functionality is disabled or severely restricted in production environments.
## Related Tools/Techniques
- Other web application exploitation techniques.
---
# Tool/Technique: Citrix Session Recording Remote Code Execution (CVE-2024-8069)
## Overview
This detection targets network activity associated with exploiting a Remote Code Execution (RCE) vulnerability (CVE-2024-8069) within Citrix Session Recording components.
## Technical Details
- Type: Vulnerability Exploitation (Network)
- Platform: Citrix Servers/Components running Session Recording
- Capabilities: Execution of arbitrary code on the target system.
- First Seen: Associated with Week 3, November 2024 detections.
## MITRE ATT&CK Mapping
- TA0001 - Initial Access
- T1190 - Exploit Public-Facing Application
## Functionality
### Core Capabilities
- Allows remote attackers to execute code on vulnerable Citrix systems.
### Advanced Features
- The context implies this is a critical RCE flaw.
## Indicators of Compromise
- File Hashes: Not applicable (network signature).
- File Names: Not applicable.
- Registry Keys: Not applicable.
- Network Indicators: Network traffic matching the Snort rule: `ET WEB_SPECIFIC_APPS Citrix Session Recording Remote Code Execution (CVE-2024-8069)` from Emerging Threats.
- Behavioral Indicators: Network connection attempting to leverage the RCE path.
## Associated Threat Actors
- Not specified in the context, but likely high-value target exploitation.
## Detection Methods
- Signature-based detection: Snort rule `ET WEB_SPECIFIC_APPS Citrix Session Recording Remote Code Execution (CVE-2024-8069)`.
## Mitigation Strategies
- Immediately apply security patches released by Citrix addressing CVE-2024-8069.
- Network segmentation to restrict external access to Citrix management consoles/recording services.
## Related Tools/Techniques
- Other network-exploitable remote code execution methods.
---
# Tool/Technique: Mura CMS SQL Injection (CVE-2024-32640)
## Overview
This detection targets network attempts to exploit a SQL Injection vulnerability (CVE-2024-32640) in Mura CMS, specifically targeting the `processAsyncObject` API method.
## Technical Details
- Type: Vulnerability Exploitation (Network/Injection)
- Platform: Web Applications running Mura CMS
- Capabilities: Injecting SQL queries to compromise the application's database.
- First Seen: Associated with Week 3, November 2024 detections.
## MITRE ATT&CK Mapping
- TA0001 - Initial Access
- T1190 - Exploit Public-Facing Application
- TA0006 - Credential Access
- T1059.004 - Command and Scripting Interpreter: SQL
## Functionality
### Core Capabilities
- Executes malicious SQL commands against the backend database via the specified API endpoint.
### Advanced Features
- Injection via the `processAsyncObject` API method.
## Indicators of Compromise
- File Hashes: Not applicable (network signature).
- File Names: Not applicable.
- Registry Keys: Not applicable.
- Network Indicators: Network traffic matching the Snort rule: `ET WEB_SPECIFIC_APPS Mura CMS SQL Injection via processAsyncObject API Method (CVE-2024-32640)` from Emerging Threats.
- Behavioral Indicators: Suspicious SQL constructs in HTTP requests targeting the relevant endpoint.
## Associated Threat Actors
- Not specified in the context.
## Detection Methods
- Signature-based detection: Snort rule `ET WEB_SPECIFIC_APPS Mura CMS SQL Injection via processAsyncObject API Method (CVE-2024-32640)`.
## Mitigation Strategies
- Update Mura CMS to a patched version that addresses CVE-2024-32640.
- Implement strong input validation and parameterized queries on the server side.
## Related Tools/Techniques
- General SQL Injection frameworks and payloads.
---
# Tool/Technique: NGINX UI Authenticated Remote Command Execution (CVE-2024-49368)
## Overview
This detection covers network attempts to exploit an Authenticated Remote Command Execution (RCE) vulnerability (CVE-2024-49368) found within the logrotate functionality of the NGINX UI interface.
## Technical Details
- Type: Vulnerability Exploitation (Network/Authenticated)
- Platform: Web servers utilizing NGINX UI with logrotate functionality enabled.
- Capabilities: Execution of system commands after authentication.
- First Seen: Associated with Week 3, November 2024 detections.
## MITRE ATT&CK Mapping
- TA0002 - Execution
- T1059 - Command and Scripting Interpreter
- TA0004 - Privilege Escalation (If authentication is relatively low-privilege)
## Functionality
### Core Capabilities
- Allows an authenticated user to run arbitrary commands on the underlying operating system by manipulating the logrotate configuration via the UI.
### Advanced Features
- Requires prior authentication to the NGINX UI component.
## Indicators of Compromise
- File Hashes: Not applicable (network signature).
- File Names: Not applicable.
- Registry Keys: Not applicable.
- Network Indicators: Network traffic matching the Snort rule: `ET WEB_SPECIFIC_APPS NGINX UI Authenticated Remote Command Execution in logrotate (CVE-2024-49368)` from Emerging Threats.
- Behavioral Indicators: Requests attempting to submit command arguments through the logrotate settings interface.
## Associated Threat Actors
- Not specified in the context.
## Detection Methods
- Signature-based detection: Snort rule `ET WEB_SPECIFIC_APPS NGINX UI Authenticated Remote Command Execution in logrotate (CVE-2024-49368)`.
## Mitigation Strategies
- Update NGINX UI components to patch CVE-2024-49368.
- Enforce strong authentication and multi-factor authentication (MFA) for all administrative/UI access points.
## Related Tools/Techniques
- Other authenticated command injection vulnerabilities.