← All detection heuristics · Shellcode
medium
SC_NOP_EQUIV_SLED
What it means
Long run of NOP-equivalent instructions (e.g. INC, DEC, POPA).
Why it fires
Some shellcode replaces 0x90 NOPs with other single-byte instructions that have no meaningful side-effect (like INC ECX) to evade simple NOP-sled detection.
Other Shellcode heuristics
SC_STR_CREATEREMOTETHREAD SC_MSF_BIND SC_MSF_REVERSE SC_MSF_C2 SC_STR_URLDOWNLOAD SC_STR_WRITEPROCESSMEMORY SC_XOR_ENCODED SC_STR_CREATEPROCESS SC_EGG_HUNTER SC_STR_GETPROCADDRESS SC_HEAP_SPRAY SC_STR_LOADLIBRARY SC_API_HASH_RESOLVER SC_PEB_ACCESS_X64 SC_PEB_ACCESS SC_STR_POWERSHELL SC_STR_SHELLEXEC SC_STR_WINEXEC SC_STR_WSCRIPT SC_XOR_DECODER SC_XOR_DECODED_NETWORK_CONFIG SC_STR_BITSADMIN SC_STR_CERTUTIL SC_STR_CMD