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The challenge is about reversing a malware sample and deciphering and analyzing its configuration. Please consider this is a real sample captured in the wild so you must be extremely careful in analyzing it.
Skill Level: Difficult
Questions:
1. Provide the common name for the malware family and version (1 point)
2. Describe the mechanism used by the sample in order to be able to restart itself at the next reboot (2 points)
3. Describe how the malware injects itself in the running system. How many threads does it spawns and which is their role? (8 points)
4. Describe the API hooking mechanism used by the sample (3 points)
5. What is the purpose of the HttpSendRequest hook? Detail how it works (6 points)
6. What is the purpose of the NtQueryDirectoryFile hook? Detail how it works (3 points)
7. What is the purpose of the NtVdmControl hook? Detail how it works (4 points)
8. What is the purpose of the InternetReadFile hook? Detail how it works (4 points)
9. What is the purpose of the InternetWriteFile hook? Detail how it works (4 points)
10. Describe the mechanism used by the sample in order to load the external plugins (3 points)
11. Extract the decrypted configuration file used by this sample (6 points)
11a. Analyze the plugin ddos.dll and detail its inner working (3 points)
11b. Analyze the plugin customconnector.dll and detail its inner working (6 points)
11c. Analyze the plugin ccgrabber.dll and detail its inner working (6 points)
Bonus question:
12. Write a code which allows automating the decryption of the configuration file
Skill Level: Difficult
Questions:
1. Provide the common name for the malware family and version (1 point)
2. Describe the mechanism used by the sample in order to be able to restart itself at the next reboot (2 points)
3. Describe how the malware injects itself in the running system. How many threads does it spawns and which is their role? (8 points)
4. Describe the API hooking mechanism used by the sample (3 points)
5. What is the purpose of the HttpSendRequest hook? Detail how it works (6 points)
6. What is the purpose of the NtQueryDirectoryFile hook? Detail how it works (3 points)
7. What is the purpose of the NtVdmControl hook? Detail how it works (4 points)
8. What is the purpose of the InternetReadFile hook? Detail how it works (4 points)
9. What is the purpose of the InternetWriteFile hook? Detail how it works (4 points)
10. Describe the mechanism used by the sample in order to load the external plugins (3 points)
11. Extract the decrypted configuration file used by this sample (6 points)
11a. Analyze the plugin ddos.dll and detail its inner working (3 points)
11b. Analyze the plugin customconnector.dll and detail its inner working (6 points)
11c. Analyze the plugin ccgrabber.dll and detail its inner working (6 points)
Bonus question:
12. Write a code which allows automating the decryption of the configuration file
https://www.honeynet.org/node/668
Ted.
Attached Files
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Malware Reverse Engineering.zip 657.91K
53 downloads
