SHELLCODE: Windows Execution (x86/fnstenv_mov) Shellcode (SMB-STC2)
This signature detects 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.
References
URL: http://www.metasploit.com/modules/encoder/x86/fnstenv_mov
Short Name
SHELLCODE:MSF:FTENV-SMB2
Severity
Critical
Recommended
False
Recommended Action
Drop
Category
SHELLCODE
Keywords
(SMB-STC2) (x86/fnstenv_mov) Execution Shellcode Windows
Release Date
09/25/2013
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