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Day 3 of #dailyyara for #100DaysofYARA
Malware authors often statically compile OpenSSL into Windows binaries. Let's hunt some artefacts.
https://github.com/secman-pl/yaras/blob/main/hunt_PE_openssl_statically_compiled.yar
πŸ—£secman_pl


πŸŽ–@malwr
Another simple .NET executable to create and add a backdoor user
Another simple but useful .NET executable that creates and adds an arbitrary user or domain user to the Local Administrators groups. Very useful for privilege escalations on Windows (i.e. unquoted service path)

Repo: https://github.com/notdodo/LocalAdminSharp
πŸ—£d_o_d_o_


πŸŽ–@malwr
My blogs on EDR bypasses & evasions + fuzzing FoxitReader 9.7 + Emulating File I/O for snapshot-fuzzing have been migrated to my new site:

New posts coming soon
https://www.signal-labs.com/blog
πŸ—£Kharosx0


πŸŽ–@malwr
Bypass Defender AV static detection:

If you name a malicious file DumpStack.log Defender doesn't scan it.
πŸ—£mrd0x


πŸŽ–@malwr
Here is code that will detect threads which are impersonating on Windows via the TIB/TEB.

Turns out not many threads impersonate other users on Windows 10 it would seem.

The technique can be integrated in EDR sweeps as a indicator for implant injects.

https://gist.github.com/olliencc/df200e0049fa17036d9f867e024f57ad
πŸ—£ollieatnccgroup


πŸŽ–@malwr
Shout out to the SOC team today. #infosec
πŸ—£rootsecdev


πŸŽ–@malwr
How do you approach investigating computer security incidents?

Some useful tools worth having your IT staff get familiar with.

ProcMon
ProcessExplorer
AutoRuns
Wireshark
Log-MD
ProcDOT

#infosec #cybersecurity #MalwareAnalysis #DFIR
πŸ—£shaktavist


πŸŽ–@malwr
Small diagram on my malware analysis workflow, using @unpacme, @IntezerLabs, @virustotal, @abuse_ch, @Mandiant capa rules and my dear #Ghidra.
πŸ—£4rchib4ld


πŸŽ–@malwr
πŸ‘1
For those interested in Reverse Engineering, I wrote an article 2 years ago about how to analyze a "Portable Executable File (exe)" using WinDbg: https://nutcrackerssecurity.github.io/PE-file.html
πŸ—£T3jv1l


πŸŽ–@malwr
🀩1
RE tip of the day: In malicious RTFs, the objects stored in the \objdata argument of the \object control word can be of various data types specified using \objclass:
* OLE2 (example: "Word.Document.8")
* OOXML
* PDFs
and others
#infosec #cybersecurity #malware #reverseengineering
πŸ—£re_and_more


πŸŽ–@malwr
A curated list of Frida resources!

https://github.com/dweinstein/awesome-frida

#frida #android #cybersecurity #bughunting
πŸ—£0xAsm0d3us


πŸŽ–@malwr