Search Evasion Techniques
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Indicator Removal: Timestomp Anti-Forensic Defense Evasion [Mitre]
Timestomping is a technique used by adversaries to modify the timestamps of a file, such as the modify, access, create, and change times. This technique is often used to hide the fact that a file has been modified or created by the adversary, making it more difficult for forensic investigators or file analysis tools to detect the changes.
By …
Caesar Cipher Data Obfuscation
The Caesar Cipher is a simple encoding algorithm that was used during the Roman Empire to hide secret messages. In this algorithm, each letter of the plaintext is replaced with a letter that is a fixed number of positions down the alphabet. For example, if the shift value is 3, then the letter "A" would be replaced with "D", "B" …
Cryptography Data Obfuscation
Cryptography is a technique often used by malware to protect against analysis or to perform malicious actions such as in ransomware attacks. In these cases, malware will use cryptography to encrypt their payloads or communication channels in order to make it difficult for security tools and forensic investigators to detect and analyze their activities.
Additionally, cryptography can be used …
Custom Encoding Data Obfuscation
Malware often uses custom encoding schemes to conceal their payloads and avoid detection. These custom schemes can be full custom layers, or they can be variations of known algorithms such as XOR or Base64. Using custom encoding schemes allows malware to encode their payloads in a unique way that can be difficult for security tools and forensic investigators to detect.
…Indicator Removal: Clear Windows Event Logs Anti-Forensic Defense Evasion [Mitre]
Event logging is a process that records important software and hardware events from various sources and stores them in a centralized location called an event log. This service is commonly used by applications and operating systems to track and troubleshoot issues, and can be a valuable tool for forensic investigations.
Event logs can provide valuable information about the actions …