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Bashreadline: Trace Analysis
linux-runtime-analysis-profiling-tools | Level: Easy | Total Lab Runs: 0 | Premium Lab |
Performance monitoring and tracking tools can provide a wealth of information about a running system. In some cases, they can help identify anomalies which could have been caused by a security incident.
In this lab, we will analyze Bashreadline script's trace logs to unearth suspicious activity. Please start the lab, answer the below questions and submit the flags to verify:
- A suspicious user had logged into the system and had downloaded some files using wget. What is the name of that user?
- The suspicious user prepended a directory to the PATH environment variable. What is the complete path of that directory?
- The suspicious user downloaded some files from a remote machine using wget. What is the domain name of the remote machine?
- The suspicious user had also downloaded a script from the same remote machine in /tmp directory. That script was executed as soon as it was downloaded. Provide the complete path of that script.
- Retrieve the flag from the script downloaded in /tmp directory.
- The suspicious user broke into another user’s account after a couple of unsuccessful attempts. What is the name of the compromised user?
- What is the name of the kernel module loaded by the suspicious user?
| Verify: | ||
|---|---|---|
| 1. | A suspicious user had logged into the system and had downloaded some files using wget. What is the name of that user? |
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| 2. | The suspicious user prepended a directory to the PATH environment variable. What is the complete path of that directory? |
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| 3. | The suspicious user downloaded some files from a remote machine using wget. What is the domain name of the remote machine? |
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| 4. | The suspicious user had also downloaded a script from the same remote machine in /tmp directory. That script was executed as soon as it was downloaded. Provide the complete path of that script. |
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| 5. | Retrieve the flag from the script downloaded in /tmp directory. |
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| 6. | The suspicious user broke into another user’s account after a couple of unsuccessful attempts. What is the name of the compromised user? |
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| 7. | What is the name of the kernel module loaded by the suspicious user? |
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