https://research.nccgroup.com/2022/03/25/mining-data-from-cobalt-strike-beacons/
- Open Dataset containing 128340 rows of Cobalt Strike Beacon metadata as JSON-lines
- Historical Beacon data spanning back to 2018
- Team Server metadata (ip address, port, TLS certificate)
- Enriched with GeoIP + ASN data
- Original Beacon configuration block (deobfuscated) available in the
config_blockfield- Can be parsed using
dissect.cobaltstrikeor any other Beacon parser of choice.
- Can be parsed using
- All binary data fields are base64 encoded
To overcome the filesize limit of 100mb on GitHub, the dataset is split by year as:
beacons-<year>.jsonl.gz
We recommend using Pandas to load the dataset. Example to load a single year:
>>> import pandas as pd
>>> df = pd.read_json("beacons-2022.jsonl.gz", lines=True)Or to load everything as one big DataFrame:
>>> import pandas as pd
>>> from pathlib import Path
>>> gen_df = (pd.read_json(fname, lines=True) for fname in Path().glob("beacons-*.jsonl.gz"))
>>> df = pd.concat(gen_df, ignore_index=True)See also our accompanying Jupyter notebook.
We have also exported the IP and Host indicators from the Beacon dataset to a CSV file: iocs-export.csv.
You can find the CSV export code in the notebook. Note that actors can arbitrarily configure domain and host headers, and the IP address could be a CDN, such as Cloudflare. So, be careful when using this for blocking purposes.
Some handy tools for querying or exploring the CSV file:
- good old
grep(orgit grepwhen you have this repo checked out) - VisiData (
pip install visidata) - GitHub's Flat Viewer (flatgithub.com)
The dataset is a gzip compressed .jsonl file, i.e. each line is a JSON. Here is an example record:
$ zcat beacons-2018.jsonl.gz | head -n 1 | jq .
{
"digest": {
"md5": "d835cb78a451e0698e6b1a260bcc7d0f",
"sha1": "c6bf7773eed78bc9c816856e168e8ba5275594a0",
"sha256": "9be990a703227bee7be61c6713bda084a8f095eddf326c817ccdfa61454e76ab"
},
"filesize": 196608,
"tls_subject": null,
"tls_issuer": null,
"tls_fingerprint": {
"md5": null,
"sha1": null,
"sha256": null
},
"collected_from_ip": "217.182.71.175",
"collected_from_port": 443,
"collected_dt": "2018-07-04T00:00:00.000000",
"domains": [
"a0.awsstatic.com",
"images.instagram.com",
"media.tumblr.com",
"cdn.zendesk.com"
],
"max_setting_enum": 20,
"beacon_version": "Cobalt Strike 3.5 (Sep 22, 2016)",
"xorencoded": 0,
"config_block": "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",
"cert_der": null,
"xorkey": "0x69",
"stage_prepend": null,
"stage_append": null,
"magic_pe": "UEU=",
"magic_mz": "TVo=",
"pe_compile_stamp": 1474078205,
"pe_export_stamp": 1474078204,
"SETTING_PROTOCOL": 8,
"SETTING_PROTOCOL_TEXT": "BeaconProtocol.https",
"SETTING_PORT": 443,
"SETTING_SLEEPTIME": 500,
"SETTING_MAXGET": 1048616,
"SETTING_JITTER": 20,
"SETTING_MAXDNS": 255,
"SETTING_PUBKEY": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCDlYFyBZVGj7WfFVJUxPVklsHLnsl4QhCMkgdnPDqfkEI8oa7DGOzXtY90swjNj6iyut8WYHU3Wlhnb0vD4z1bKHKg3E+0Pky0Ww/vPzyhfNNmo5eC94Pl1zhT0l9uG/q00aKZL8l2YoEsX06GheQE6CvJ48EhsXPci5+8NONfrwIDAQAB",
"SETTING_PUBKEY_SHA256": "bc748561006feb7c46c34870a60ddf5c2b43ed56616c6a9f62a83114d7c76127",
"SETTING_DOMAINS": "YTAuYXdzc3RhdGljLmNvbSwvX191dG0uZ2lmLGltYWdlcy5pbnN0YWdyYW0uY29tLC9fX3V0bS5naWYsbWVkaWEudHVtYmxyLmNvbSwvX191dG0uZ2lmLGNkbi56ZW5kZXNrLmNvbSwvX191dG0uZ2lm",
"SETTING_USERAGENT": "TW96aWxsYS81LjAgKGNvbXBhdGlibGU7IE1TSUUgOS4wOyBXaW5kb3dzIE5UIDYuMTsgV2luNjQ7IHg2NDsgVHJpZGVudC81LjAp",
"SETTING_SUBMITURI": "L19fX3V0bS5naWY=",
"SETTING_C2_RECOVER": [
"print=True",
"prepend=15",
"prepend=15",
"prepend=10"
],
"SETTING_C2_REQUEST": [
"_PARAMETER=b'utmac=UA-2202604-2'",
"_PARAMETER=b'utmcn=1'",
"_PARAMETER=b'utmcs=ISO-8859-1'",
"_PARAMETER=b'utmsr=1280x1024'",
"_PARAMETER=b'utmsc=32-bit'",
"_PARAMETER=b'utmul=en-US'",
"_HEADER=b'Host: d2w6c6xrwsk1zr.cloudfront.net'",
"BUILD=metadata",
"NETBIOS=True",
"PREPEND=b'__utma'",
"PARAMETER=b'utmcc'"
],
"SETTING_C2_POSTREQ": [
"_HEADER=b'Content-Type: application/octet-stream'",
"BUILD=metadata",
"PREPEND=b'UA-220'",
"APPEND=b'-2'",
"PARAMETER=b'utmac'",
"_PARAMETER=b'utmcn=1'",
"_PARAMETER=b'utmcs=ISO-8859-1'",
"_PARAMETER=b'utmsr=1280x1024'",
"_PARAMETER=b'utmsc=32-bit'",
"_PARAMETER=b'utmul=en-US'",
"_HEADER=b'Host: d2w6c6xrwsk1zr.cloudfront.net'",
"BUILD=output",
"PRINT=True"
],
"SETTING_SPAWNTO": "cnVuZGxsMzIuZXhl",
"SETTING_PIPENAME": "XFwlc1xwaXBlXG1zYWdlbnRfJXg=",
"SETTING_DNS_IDLE": 0,
"SETTING_DNS_IDLE_IP": "0.0.0.0",
"SETTING_DNS_SLEEP": 0,
"SETTING_KILLDATE_YEAR": 0,
"SETTING_KILLDATE_MONTH": 0,
"SETTING_KILLDATE_DAY": 0,
"country": "France",
"country_code": "FR",
"city": null,
"longitude": 2.3387,
"latitude": 48.8582,
"asn": "16276",
"org": "OVH SAS"
}
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