300-215 Question 21
Single answerDuring a forensic investigation, you discover an unusual string in a suspicious script: 'c2FtcGxlLnR4dA=='. Upon further analysis, you suspect the attacker used an encoding technique to hide the data. Which encoding or obfuscation technique was most likely used in this case?
- A
Base64 encoding
- B
Hex encoding
- C
Polymorphic coding
- D
Metamorphic coding
Show answer and explanation
Correct answer: A
Explanation
The string 'c2FtcGxlLnR4dA==' is encoded using Base64, as evidenced by its characteristic format and the '==' padding at the end. Recognizing such encoding techniques is crucial for forensic analysts to decode and analyze potentially malicious data.
- A. Correct.
Base64 encoding is a common technique used to obfuscate data, and the '==' at the end of the string is a strong indicator of Base64 encoding. Decoding this string would reveal the original content.
- B. Incorrect.
Hex encoding uses hexadecimal characters (0-9 and A-F) to represent data. The string in question does not follow this format.
- C. Incorrect.
Polymorphic coding is a technique where malicious code changes its structure each time it executes to evade detection, but it does not apply to data encoding like the string provided.
- D. Incorrect.
Metamorphic coding involves rewriting malware code to appear different while maintaining the same functionality. It is unrelated to the encoding of data in this scenario.