The OdinLdr and Draugr tools, alongside Cobalt Strike’s User-Defined Reflective Loader (UDRL), represent advanced mechanisms for enhancing stealth and flexibility in red team operations.
These tools leverage innovative techniques to bypass endpoint detection and response (EDR) systems and optimize post-exploitation tasks.
BeaconUserData
structure to manage memory information for Cobalt Strike’s Beacon payloads. This includes allocating memory for Beacon Object Files (BOFs) and sleep masks.MASK_TRUE
in the allocated memory structure..rdata
section in these loaders is set to read-write instead of read-only.BeaconUserData
, ensuring compatibility with sleep encryption mechanisms.amsi_disable
) in PowerShell or assembly can trigger IoCs. Implementing hardware breakpoint (HWBP) hooking on AmsiScanBuffer
for specific DLLs reduces detection risks.BeaconUserData
ensures accurate runtime masking.These advancements draw inspiration from resources like Sektor7’s training programs and Cobalt Strike’s extensive documentation.
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