Base64

Created the Monday 18 March 2019. Updated 10 months, 3 weeks ago.

Base64 is a simple encoding scheme that is often used by malware to represent binary data in an ASCII string. This allows the malware to encode and transmit binary data, such as a payload or network traffic, in a way that is more compact and easier to transmit over text-based communication channels.

Base64 uses a 64-character alphabet to encode the data, which includes the upper and lower case letters, the digits 0-9, and the symbols "+" and "/". The encoded data is typically padded with the character "=" to ensure that it has a length that is a multiple of 4. The encoded data can then be decoded using the same 64-character alphabet to recover the original binary data. This makes Base64 a useful tool for malware to conceal their payloads and communicate with their command and control (C2) servers.



Code Snippets

Detection Rules

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Additional Resources

External Links

The resources provided below are associated links that will give you even more detailed information and research on current evasion technique. It is important to note that, while these resources may be helpful, it is important to exercise caution when following external links. As always, be careful when clicking on links from unknown sources, as they may lead to malicious content.

Matching Samples 10 most recent

Sample Name Matching Techniques First Seen Last Seen
honeypot.exe 5 2024-12-04 2 days, 3 hours ago
Xulytaikhoan.xlsx 14 2024-11-26 1 week, 3 days ago
Setup.exe 5 2024-11-25 1 week, 4 days ago
8126a59c84aad134868c842eabc2...204cd859e6322d22ce5a3b937e2a 5 2024-11-19 2 weeks, 3 days ago
8e9583fb455e3381e29e40af8533...833f37f2d6927cb25dde2f3d4085 4 2024-11-19 2 weeks, 3 days ago
765edfc0c20fa35b84f7b36bf280...87d29cdf96ac9712ee6e05f59056 6 2024-11-19 2 weeks, 3 days ago
315194f647f925de53ce6f014d64...9fb23070d253276b626a132557e8 10 2024-11-19 2 weeks, 3 days ago
implant.exe 6 2024-11-18 2 weeks, 4 days ago
KnightOnLine.exe 7 2024-11-17 2 weeks, 4 days ago
chelentano.exe 5 2024-11-16 2 weeks, 6 days ago
View All

Sleeping Alien

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