The provided source material details the analysis of a specific file, identified by a hash, through a hybrid analysis platform. The data focuses on identifying potential threats, network communications, and persistence mechanisms associated with the file. The analysis reveals indicators of bot communication, network traffic to a specific IP address, and the creation of system mutants. Additionally, the file interacts with the Windows MountPointManager and touches numerous system files within the Windows directory, which are common behaviors observed during the installation or execution phases of malicious software.
Detailed Indicators of Compromise
The analysis of the file highlights several key indicators that suggest potential malicious activity. These indicators are categorized into network behavior, system interaction, and file activity.
Network Traffic and Communication
The file demonstrates specific network behaviors that warrant attention: - Domain Contact: The file contacts the domain "maisondulaser.fr". - Server Communication: It establishes a connection with the server at IP address "87.98.154.146" on port 80. - Bot Communication Indicators: The analysis flags the presence of commands typically associated with bot communication. - Unusual HTTP Traffic: The file sends TCP traffic to the IP address "87.98.154.146" on port 80 without including a standard HTTP header. This behavior is often used to evade detection by simple network filters.
System Interaction and Persistence
The file interacts with the Windows operating system in ways that could indicate an attempt to establish persistence or hide its presence: - Mutant Creation: The file creates a mutant named "\Sessions\1\BaseNamedObjects\Local\InternetShortcutMutex". This is a specific synchronization object that may be used to ensure only a single instance of the malware runs or to coordinate activities between different components. - MountPointManager Access: The file opens the MountPointManager. This is a common technique used by malware to detect additional infection locations or to monitor system drives. - File System Interaction: The file, identified as "wscript.exe", touches (accesses or modifies) several files in the Windows directory. The specific files touched include: - "%WINDIR%\SysWOW64\rsaenh.dll" - "%WINDIR%\SysWOW64\en-US\wscript.exe.mui" - "%WINDIR%\SysWOW64\wscript.exe" - "%WINDIR%\Globalization\Sorting\SortDefault.nls" - "%WINDIR%\SysWOW64\scrrun.dll" - "%WINDIR%\SysWOW64\wshom.ocx" - "%WINDIR%\SysWOW64\en-US\wshom.ocx.mui" - "%WINDIR%\SysWOW64\en-US\KernelBase.dll.mui" - "%WINDIR%\SysWOW64\msxml6r.dll"
Behavioral Analysis
The file exhibits behaviors associated with evasion and analysis detection: - Debugger/Analysis Tool Check: The file may be checking for known debuggers or analysis tools to avoid execution in a sandboxed or monitored environment. - Obfuscation: The source data contains large blocks of seemingly random or highly obscure text. This is a common technique used by malware authors to hide command and control (C2) communications or to obfuscate code logic within the file's memory. The text includes indicators such as "ntice" and "twitter", which may be keywords used within the malware's logic.
Analysis of the Obfuscated Text
The source data includes extensive blocks of text that appear to be random strings or generated content. These strings are likely part of the file's memory dump or configuration data. The presence of such text is a strong indicator of obfuscation. Malware often uses this technique to pack data or to hide strings that might be flagged by antivirus software. The specific indicators mentioned in the text, such as "ntice" and "twitter", could be related to specific malware families or specific commands the malware is programmed to execute.
Conclusion
The hybrid analysis of the file points toward a potentially malicious executable. Key indicators include network communication with a suspicious IP address, the creation of system mutants, and interaction with critical system files. The file also exhibits behaviors designed to evade detection by analysis tools. The extensive use of obfuscated text within the file's memory further supports the suspicion of malicious intent. Based on the provided data, the file should be treated with high caution and isolated for further investigation.