Iamantimalware: Inject Malicious Code Into Antivirus

TL;DR: An experimental write‑up documents attempts to inject code into antivirus processes marked as protected, aiming to persist a backdoor inside the av installation folder while cataloging common av self‑protection mechanisms.

Context The post frames the problem from a penetration‑testing perspective: actions by testers are monitored and blocked by antivirus products, so the author explores whether injecting into the antivirus process itself can enable operations that ordinary processes cannot perform, such as writing into the antivirus installation directory.

What’s New The article collects and explains the layered defenses used by AV solutions: running components under SYSTEM privileges, employing Protected Process Light (PPL), performing process introspection to detect tampering, validating the process ImagePath, enforcing DLL signature checks (with Bitdefender mentioned), and using kernel drivers to monitor process initialization.

Technical Breakdown The author describes why common spoofing approaches are constrained: modifying the PEB or creating a process and using its handle are frequently ineffective when a kernel driver identifies a process as protected. The write‑up focuses on conceptual attack paths — injecting into an already protected process — to bypass user‑mode restrictions and reach privileged actions like writing to the AV install folder. No PoC code, IoCs, or hashes are published.

Detection & Mitigation The post highlights defender controls implicitly: kernel‑level monitoring during process initialization, ImagePath validation, DLL signing enforcement, and protecting installation directories. These topics are presented as observed AV behaviors rather than as new defensive recommendations.

Limitations The content is exploratory and does not include reproducible exploits or indicators. The discussion is architectural and descriptive, without operational artifacts.

PPL #process_injection #antivirus #kernel_driver

SOURCE: https://www.zerosalarium.com/2025/10/IAmAntimalware-Inject-Code-Into-Antivirus.html