SHELLCODE: X86 OS agnostic XOR Dword Decoder Routine Over HTTP-STC
This signature detects payloads being transferred over network that have been encoded using x86 XOR dword decoder routine. This may be an indication of someone trying to evade anti-virus/IPS solutions and possibly drop malicious code.
Short Name
SHELLCODE:X86:XOR-DWORD-80S
Severity
Critical
Recommended
True
Recommended Action
Drop
Category
SHELLCODE
Keywords
Decoder Dword HTTP-STC OS Over Routine X86 XOR agnostic
Release Date
08/12/2015
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