Signature Detail
Short Name |
SHELLCODE:X86:FNSTENV-STC-1 |
|---|---|
Severity |
Critical |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
SHELLCODE |
Keywords |
Metasploit x86/fnstenv_mov Encoder Routine Over TCP-STC(1) |
Release Date |
2015/08/17 |
Update Number |
2526 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
SHELLCODE: Metasploit x86/fnstenv_mov Encoder Routine Over TCP-STC(1)
This signature detects Metasploit shell code being sent as part of an exploit payload, specifically the Windows Execution shell, using the variable-length fnstenv/mov dword XOR encoder (x86/fnstenv_mov). This is a strong indication of malicious activity on your network.