Signature Detail
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Short Name |
SHELLCODE:X86:X86-NOOP1-STC |
|---|---|
Severity |
Critical |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
SHELLCODE |
Keywords |
x86 NOOP (1) Over TCP-STC |
Release Date |
2015/10/07 |
Update Number |
2543 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
SHELLCODE: x86 NOOP (1) Over TCP-STC
This signature detects payloads being transferred over HTTP protocol that have been encoded using x86/avoid_utf8_tolower encoder routine. This may be an indication of someone trying to evade anti-virus/IPS solutions and possibly drop malicious code.