SHELLCODE: Metasploit x86/fnstenv_mov Encoder Routine Over HTTP-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.
Short Name
SHELLCODE:X86:FNSTENV-80S-1
Severity
Critical
Recommended
True
Recommended Action
Drop
Category
SHELLCODE
Keywords
Encoder HTTP-STC(1) Metasploit Over Routine x86/fnstenv_mov
Release Date
08/17/2015
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3324
False Positive
Unknown