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httpd

can u analyze this file? Is it malicious? what could it be?

Dr.Binary
createTask
Executing task: Static analysis of 'httpd' binary for maliciousness
ghidra_list_segments
ghidra_open_server
ghidra_list_segments
ghidra_list_strings
ghidra_list_imports
Task Static analysis of 'httpd' binary for maliciousness completed: The static analysis of the ARM-based binary 'httpd' indicates it is a standard network daemon, likely an HTTP server, utilizing common libc functions and system calls for networking, process control, and file management. It dynamically links to libc and uses typical ELF segments, with strings related to socket operations, process spawning, privilege management (e.g., setuid, chroot), and system commands. No immediate signs of obfuscation or malicious behavior are evident, though its capabilities for spawning subprocesses and privilege adjustments warrant further behavioral analysis for security assessment.
createTask
Executing task: Dynamic behavioral analysis of 'httpd' binary
sandbox_execute
sandbox_execute
sandbox_execute
sandbox_execute
sandbox_execute
Task Dynamic behavioral analysis of 'httpd' binary completed: The "httpd" binary located at /sandbox/httpd cannot be executed due to an "Exec format error," indicating incompatibility with the current environment's architecture. Additionally, common tracing tools like strace and ltrace are unavailable, preventing dynamic analysis of the binary's runtime behavior, network activity, system calls, and other operations within this sandbox. Further details about the intended platform or alternative analysis methods are needed to proceed.

The binary "httpd" appears to be an ARM architecture executable, likely an HTTP server or network daemon with typical networking functions and privilege management. Static analysis shows no immediate signs of maliciousness based on imported functions and strings.

However, dynamic analysis to observe runtime behavior could not be performed because of an execution format error in the current environment. This means the binary cannot be run here for further behavioral insights.

Would you like me to assist you with additional static analysis details, such as decompiling key functions or extracting specific information? Or do you want guidance on how to run dynamic analysis on a compatible platform?

Can you determine what platform this running file is on and perform further analysis?

Dr.Binary

Based on the static analysis, the binary "httpd" is compiled for the ARM architecture. Specifically, it uses the ARM hard-float ABI as suggested by the interpreter string: "/lib/ld-linux-armhf.so.3". This means it is intended to run on ARM platforms that support the ARM hard-float calling convention and likely a Linux operating system.

Since I cannot execute the ARM binary directly in the current sandbox (which is likely x86_64-based), dynamic analysis cannot be run here. However, I can perform deeper static analysis such as decompiling key functions or analyze strings and import usage further.

Would you like me to continue with more in-depth static analysis on this ARM binary? Or do you want information on how to set up an ARM emulation environment for dynamic analysis?

Continue with more in-depth static analysis on this ARM binary.

Dr.Binary
createTask
Executing task: In-depth static analysis and decompilation of key functions in 'httpd'
ghidra_open_server
ghidra_search_functions_by_name
ghidra_list_functions
ghidra_decompile_function
ghidra_decompile_function
ghidra_decompile_function
ghidra_decompile_function
ghidra_list_strings
ghidra_list_functions
ghidra_decompile_function
ghidra_decompile_function
ghidra_decompile_function
Task In-depth static analysis and decompilation of key functions in 'httpd' completed: The static analysis of the ARM 'httpd' binary reveals that it functions as a standard lightweight web server, performing socket creation, binding to a specified port, and listening for incoming HTTP connections. The main initialization function sets up the environment by configuring file permissions, parsing command-line options, changing and chrooting the working directory, creating and configuring sockets, and daemonizing the process. It employs privilege dropping mechanisms such as getpwnam, initgroups, setgid, and setuid for security. The server handles network operations through typical system calls like socket, bind, listen, and accept, and manages output streams for logging or IPC. It also features robust error handling and security precautions, such as chroot confinement and privilege dropping, with potential risks mainly tied to input validation and configuration, which are not explicitly evident here. Overall, the binary exhibits standard HTTP server behaviors suitable for secure deployment when properly configured.

The ARM "httpd" binary is a typical lightweight HTTP daemon that:

  • Creates, binds, and listens on a TCP socket for incoming connections.
  • Supports configuration of network IP and listening port.
  • Daemonizes itself by forking and detaching from the terminal.
  • Drops privileges if initially run as root by changing user and group IDs and entering a chroot jail.
  • Uses standard libc and system calls related to networking, file I/O, and process control.
  • Has error checking and exits gracefully on failures.

No explicit malicious functionality or critical security flaws were identified from this static analysis. However, like any network daemon, it depends heavily on input validation and secure configuration to prevent exploitation.

If you want, I can explore more specific functions or aspects of this binary. Would you like to proceed with that?