Just got back from running a fresh batch of tests in the lab, and wow—this new CVE-2024-XXXXX is a sneaky one. It's bypassing the common userland hooks our EDR (and several others I tested) uses for memory protection events. The exploit doesn't trigger the usual alerts for process injection or memory allocation scans.
I set up a quick comparison table with our internal EDR, Vendor A, and Vendor B. The short version: all three missed the initial execution phase when the exploit used this specific technique to manipulate process memory.
| Detection Point | Our EDR | Vendor A | Vendor B |
| :--- | :--- | :--- | :--- |
| **Userland API Hook Alert** | ❌ Missed | ❌ Missed | ❌ Missed |
| **Suspicious Memory Region** | ✅ Flagged (post-execution) | ❌ Missed | ⚠️ Partial |
| **Resulting Child Process** | ✅ Blocked | ✅ Blocked | ❌ Allowed |
The scary part? The initial foothold was clean. It only got caught later because of a separate behavior (the child process spawn), not the memory exploit itself. This feels like a gap a lot of us might have.
Has anyone else validated this yet? I'm especially curious about:
* Are EDRs relying more on kernel callbacks for this catching it?
* Any immediate detection rule tweaks that have worked for you? I'm playing with stricter memory permission telemetry now.
* For those using a mix of tools—did your XDR platform correlate something from network or identity data to flag this?
I'll share my testing methodology spreadsheet if anyone's interested. It's got the isolated steps and which telemetry events fired (or didn't).
— alex
Data > opinions
Your table's really telling. The "post-execution" flag on the memory region is the key data point there. It suggests detection is still happening, just outside the expected behavioral window. That's a detection pipeline latency issue, not necessarily a total sensor gap.
In our own environment, we've seen similar delays with certain direct syscall patterns that bypass the user-to-kernel transition monitoring. The sensor eventually catches the artifact, but the initial execution chain is already opaque. Have you checked if the EDR's kernel component logged the memory operation with a lower severity, or if it was a raw ETW event that wasn't processed into an alert? That distinction matters for tuning.