signature-base
xzbot
| signature-base | xzbot | |
|---|---|---|
| 12 | 2 | |
| 2,333 | 3,435 | |
| - | - | |
| 9.1 | 2.8 | |
| 7 days ago | 29 days ago | |
| YARA | Go | |
| GNU General Public License v3.0 or later | - |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
signature-base
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Xzbot: Notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094)
> It doesn't matter.
To understand the exact behavior and extend of the backdoor, this does matter. An end to end proof of how it works is exactly what was needed.
> A way to check if servers are vulnerable is probably by querying the package manager
Yes, this has been know since the initial report + later discovering what exact strings are present for the payload.
https://github.com/Neo23x0/signature-base/blob/master/yara/b...
> Not very sophisticated, but it'll work.
Unfortunately, we live in a world with closed-servers and appliances - being able as a customer or pen tester rule out certain class of security issues without having the source/insights available is usually desirable.
- Exploit Outlook CVE-2023-23397 Yara - to detect .msg files exploiting CVE-2023-23397 in Microsoft Outlook
- OneNote Yara rule
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New Exchange Zero Day rumours [29th September]
* Run the following YARA rules over your logs and aspx files in INSTALL_DIRECTORY/Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa\ https://github.com/Neo23x0/signature-base/blob/master/yara/expl_proxyshell.yar
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Nvidia Breach
If you have a Yara detection platform, Florian Roth’s rules should detect executables signed with this. https://github.com/Neo23x0/signature-base/blob/master/yara/gen_nvidia_leaked_cert.yar.
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Evidence of a log4j attack found - Now what?
Uses these YARA rules to read JAR, LOG, and TXT files on the system, throwing warnings if any log4shell-looking payloads are found based on those various rules.
- Yara rule to detect ProxyToken exploitation
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APT29 / NOBELIUM VirusTotal retro hunt results using 12 newly release Yara rules
Rules https://github.com/Neo23x0/signature-base/blob/master/yara/apt_apt29_nobelium_may21.yar
- What are the best FOSS YARA rules you would recommend to deploy?
xzbot
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Xzbot: Notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094)
Instead of needing the honeypot openssh.patch at compile-time https://github.com/amlweems/xzbot/blob/main/openssh.patch
How did the exploit do this at runtime?
I know the chain was:
opensshd -> systemd for notifications -> xz included as transient dependency
How did liblzma.so.5.6.1 hook all the way back to openssh_RSA_verify when it was loaded into memory?
What are some alternatives?
malware-ioc - Indicators of Compromises (IOC) of our various investigations
Loki - Loki - Simple IOC and YARA Scanner
awesome-yara - A curated list of awesome YARA rules, tools, and people.
ThreatHunting - Tools for hunting for threats.
reversinglabs-yara-rules - ReversingLabs YARA Rules
audit-node-modules-with-yara - Audit Node Module folder with YARA rules to identify possible malicious packages hiding in node_moudles
yara-python - The Python interface for YARA
YaraHunter - 🔍🔍 Malware scanner for cloud-native, as part of CI/CD and at Runtime 🔍🔍
blacklist-named
uBlock - uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.
log4shell-tool - Log4Shell Enumeration, Mitigation and Attack Detection Tool
Cerebro - Scripts and lists to help generate YARA friendly string mutations