defensive cyber
79 TopicsSnort Rules: Ep.9 – Exploit Kits
I am pulling my hair with question number 8 Create a Snort rule to detect the third GET request in the second PCAP file, then submit the token. This one should do it but it is not working. alert tcp any any -> any any (msg:"detect the third GET request"; content:"e31e6edb08bf0ae9fbb32210b24540b6fl"; sid:1000001) I tried so many rules base on the first GET header and still unable to get the token. Any tips?19Views0likes1CommentSnort Rules: Ep.7 – Lokibot Infection Traffic
I need help with the last question please. I tried so many rules and I am still getting it wrong 13-Create a Snort rule to detect this User-Agent string in the HTTP header for connections using port 49167, then submit the token. Tried this one which to me it should be able to work. alert tcp any any -> any 49167 (msg:"User-Agent match"; content:"Mozilla/4.08 (Charon; Inferno)"; sid:5000031;) alert tcp any any -> any 49167 (msg:"User-Agent Mozilla/4.08 (Charon; Inferno) detected"; content:"User-Agent: Mozilla/4.08 (Charon; Inferno)"; http_header; sid:5000020;)Solved36Views0likes2CommentsHelp with Foundational Static Analysis: 64-Bit Analysis
Hello everyone, I received this error while attempting to analyse the malware in this Lab with the default format settings that Ghidra assigned. I attempted to search for the API required in Exercise 1 (CreateProcessWithTokenW) but nothing came up in the Imports or the function list. Am I missing something? Thank you! :)Solved50Views1like2CommentsMalware Analysis: Shlayer
I've done the first 2 questions but stuck on the 3rd - what is the XOR key? Is this found in the first or second stage 7z compressed file? and....the lab description mentions Cyberchef - is this available in the lab? (as you cannot copy and paste out of this lab) I just have this and the Qakbot one to complete than I have the "malware analysis badge"Solved177Views2likes11CommentsICSE / Wireshark final exercice : how to rebuilt the Pdf?
Hi everyone, in the last exercise, I managed to rebuilt the pdf file and it is perfectly readable, however the md5 hash generated from it keeps on been wrong. Is there anything special to consider when rebuilding the file? My method for rebuilting it was to remove top an bottom part that are obviously not part of the pdf, and also the newline character at the end of the last line, then concatenate everything together with a cat command. Thanks in advance for any hint.54Views0likes5CommentsActive Directory Basics: Demonstrate Your Skills
Hey team, i am working on the lab in the title and quite sure there's an issue with the answer for one of the questions. 12. What is the full name of the user on COMP-SIREN that begins with L? I am pretty sure it is Larry Young as you can see from the screenshot. Could i check whether there is an error with the question? Or am i missing somethingSolved80Views0likes3CommentsFIN7 Threat Hunting with Splunk: Ep.3 – Execution Logs
I am pulling my hair with this last question Rebuild the PowerShell script from the previous question using the three parts found in the PowerShell operational logs. What is the MD5 hash of this file? (The file should not contain any trailing white space or return characters) I ran index=* (EventCode=4104) | search "stager.ps1" AND "scriptblock" | table _raw and added the script content of files (1 of 3) (2 of 3) (3 of 3) to a new file. I removed the spaces and made sure they are glued together. I pasted the file in cyber chef with md5 selected and I keep getting the wrong hash. See a sample of the beginning and end of the 3 files This is just a sample below. I really don't know what else to do with this. $EncodedCompressedFile = @' 7b1pk+LKcjD83RH3P5y4cT/Y0ddusfXAfcMRT5U2JJCgBBJIDn8AAQIklmmgBfz6N7O00sCcnuuxH9vPUcRMo1qycqvMrFItfxmsgu3keHqf//avv/2fP//pH/5NiiJts9+9H//xz+H8fTuPatV/mUXRn//p u3rgE9+I/KPY62u+qTQuvp0Xqu3KPkEovj/867/++Z/+9A9/+oe/jFZbY7757V9/w1+96fpvf3NW78fTJCJRtPP/UfjrvxmT4/Lf//Y3Y3L+x79ML8f54V+6821wXP5VOFcEQfgn+FuDv/CnLnCY/za4HI7zzb9Yp+1xtZn/i7Y9zt93+8H8/WPlQ3Vj8n5YTiKAKe72lxToX4W/prj89aaVHEuOm/g+nxznwyX8mQFuRR38ja3//w== '@ $Decoded = [System.Convert]::FromBase64String($EncodedCompressedFile) $MemStream = New-Object System.IO.MemoryStream $MemStream.Write($Decoded, 0, $Decoded.Length) $MemStream.Seek(0,0) | Out-Null $CompressedStream = New-Object System.IO.Compression.DeflateStream($MemStream, [System.IO.Compression.CompressionMode]::Decompress) $StreamReader = New-Object System.IO.StreamReader($CompressedStream) $Output = $StreamReader.readtoend() $Output | IEXSolved68Views0likes1Comment