ioc-parser

IOC Parser is a tool to extract indicators of compromise from security reports in PDF format. A good collection of APT related reports with many IOCs can be found here: APTNotes.

Usage

iocp.py [-h] [-p INI] [-i FORMAT] [-o FORMAT] [-d] [-l LIB] FILE

• FILE File/directory path to report(s)
• -p INI Pattern file
• -i FORMAT Input format (pdf/txt/html)
• -o FORMAT Output format (csv/json/yara)
• -d Deduplicate matches
• -l LIB Parsing library

Usage as a package

Import IOC_Parser and create iocp object with 'data' output format. 'data' output format allows you to get any parsed IOCs as a dict.

from ioc_parser.iocp import IOC_Parser
iocp = IOC_Parser(output_format='data')

Adding a host to a whitelist after creating iocp object. IOC_Parser constructor parses any whitelist_*.ini files supplied in the basedir, but this allows you to add whitelists inline.

whitelist_host_str = "{}$".format("example.com")
whitelist_dict = {"Host": whitelist_host_str}
wl = WhiteList(whitelist_dict=whitelist_dict)
iocp.whitelist.update(wl)

Open a file and pass the file object and path to the parse_pdf_pdfminer method. This specifies which pdf parser to use, alternatively you can specify which pdf parser to use in the IOC_Parser constructor and use parse_pdf here. Or use the default pdf parser.

with open(pdf_path, "rb") as f:
    iocp.parse_pdf_pdfminer(f, pdf_path)

iocs = iocp.handler.get_iocs() # Returns a dictionary of any IOCs found

get_iocs() returns a dictionary in the following format:

{
    "Email": {
        "file": "report1.pdf",
        "match": "domains@winmsn.com",
        "page": 4,
        "path": "./downloaded_files/report1.pdf",
        "type": "Email"
    },
    "IP": {
        "file": "report1.pdf",
        "match": "213.200.66.26",
        "page": 8,
        "path": "./downloaded_files/report1.pdf",
        "type": "IP"
    }
}

Requirements

One of the following PDF parsing libraries:

• PyPDF2 - pip install pypdf2
• pdfminer - pip install pdfminer

For HTML parsing support:

• BeautifulSoup - pip install beautifulsoup4

For HTTP(S) support:

• requests - pip install requests