Suspicious PowerShell Obfuscation Keywords
Detects PowerShell obfuscation techniques in process command lines, including encoded commands, IEX with string manipulation, and long command lines with string functions, indicating potential malicious activity. The rule specifically looks for the use of '-encodedcommand' or its short forms with long command lines, 'iex' or 'invoke-expression' combined with string manipulation (like '+', '-join', '[char]', 'frombase64string') or very long command lines, and unusually long command lines that also contain string manipulation functions ('-join', 'replace', 'split').
YARA-L
