← All detection heuristics · Shellcode
high
SC_GETPC_FSTENV
What it means
x86 FSTENV-based instruction sequence to obtain the instruction pointer.
Why it fires
An alternative GetPC technique that uses floating-point environment save (FSTENV) to leak the instruction pointer. This is a strong shellcode indicator because this instruction pattern is uncommon in ordinary document data.
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