Showing posts with label Sysadmin. Show all posts
Showing posts with label Sysadmin. Show all posts

Aug 31, 2017

Malicious Traffic Detection System 101Scratch

Introduction

Maltrail is a malicious traffic detection system, utilizing publicly available (black)lists containing malicious and/or generally suspicious trails, along with static trails compiled from various AV reports and custom user defined lists, where trail can be anything from domain name (e.g. zvpprsensinaix.com for Banjori malware), URL (e.g. http://109.162.38.120/harsh02.exe for known malicious executable), IP address (e.g. 185.130.5.231 for known attacker) or HTTP User-Agent header value (e.g. sqlmap for automatic SQL injection and database takeover tool). Also, it uses (optional) advanced heuristic mechanisms that can help in discovery of unknown threats (e.g. new malware).
Malicious Traffic Detection System
Malicious Traffic Detection System.
The following (black)lists (i.e. feeds) are being utilized:
alienvault, autoshun, badips, bambenekconsultingc2dns,
bambenekconsultingc2ip, bambenekconsultingdga, bitcoinnodes,
blocklist, botscout, bruteforceblocker, ciarmy, cruzit,
cybercrimetracker, deepviz, dataplanesipinvitation,
dataplanesipquery, dataplane, dshielddns, dshieldip,
emergingthreatsbot, emergingthreatscip, emergingthreatsdns,
feodotrackerdns, malwaredomainlist, malwaredomains, malwarepatrol,
maxmind, myip, nothink, openbl, openphish, packetmailcarisirt,
packetmailramnode, palevotracker, policeman, proxylists, proxyrss,
proxy, ransomwaretrackerdns, ransomwaretrackerip,
ransomwaretrackerurl, riproxies, rutgers, sblam, securityresearch,
snort, socksproxy, sslipbl, sslproxies, torproject, torstatus,
turris, urlvir, voipbl, vxvault, zeustrackerdns, zeustrackerip,
zeustrackermonitor, zeustrackerurl, etc.
As of static entries, the trails for the following malicious entities (e.g. malware C&Cs or sinkholes) have been manually included (from various AV reports and personal research):
aboc, adwind, alienspy, almalocker, alureon, android_acecard,
android_adrd, android_alienspy, android_arspam,
android_backflash, android_basebridge, android_boxer,
android_chuli, android_claco, android_coolreaper,
android_counterclank, android_cyberwurx, android_dendoroid,
android_dougalek, android_droidjack, android_droidkungfu,
android_enesoluty, android_ewalls, android_exprespam,
android_fakebanco, android_fakedown, android_fakeinst,
android_fakelog, android_fakemart, android_fakemrat,
android_fakeneflic, android_fakesecsuit, android_feabme,
android_flexispy, android_frogonal, android_geinimi,
android_ghostpush, android_ginmaster, android_gmaster,
android_godwon, android_golddream, android_gonesixty,
android_ibanking, android_kemoge, android_lockdroid,
android_lovetrap, android_maistealer, android_maxit,
android_oneclickfraud, android_opfake, android_ozotshielder,
android_pikspam, android_pjapps, android_qdplugin,
android_repane, android_roidsec, android_samsapo,
android_sandorat, android_selfmite, android_simplocker,
android_skullkey, android_sndapps, android_spytekcell,
android_stealer, android_stels, android_teelog, android_tetus,
android_tonclank, android_torec, android_uracto,
android_usbcleaver, android_walkinwat, android_windseeker,
android_zertsecurity, androm, andromem, angler, anuna, arec,
aridviper, artro, autoit, avalanche, avrecon, axpergle, babar,
bachosens, badblock, balamid, bamital, bankapol, bankpatch,
banloa, banprox, bayrob, bedep, blackenergy, blackvine,
blockbuster, bredolab, bubnix, bucriv, buterat, camerashy,
carbanak, carberp, careto, casper, cerber, changeup, chanitor,
chekua, cheshire, chewbacca, chisbur, cleaver, cloud_atlas,
conficker, contopee, copykittens, corebot, cosmicduke,
couponarific, criakl, cridex, crilock, cryakl, cryptinfinite,
cryptodefense, cryptolocker, cryptowall, ctblocker, cutwail,
darkhotel, defru, desertfalcon, destory, dnschanger,
dnsmessenger, dnstrojan, dorifel, dorkbot, drapion, dridex,
dukes, dursg, dyreza, elf_aidra, elf_billgates, elf_darlloz,
elf_ekoms, elf_fysbis, elf_groundhog, elf_hacked_mint,
elf_mayhem, elf_mokes, elf_pinscan, elf_rekoobe, elf_shelldos,
elf_sshscan, elf_themoon, elf_turla, elf_xnote, elf_xorddos,
elpman, emogen, emotet, equation, evilbunny, ewind, expiro,
fakeav, fakeran, fantom, fareit, fbi_ransomware, fiexp,
fignotok, fin4, finfisher, fraudload, fynloski, fysna, gamarue,
gauss, gbot, generic, golroted, gozi, groundbait, harnig,
hawkeye, helompy, hiloti, hinired, htran, immortal, injecto,
ios_keyraider, ios_muda, ios_oneclickfraud, ios_specter,
ismdoor, jenxcus, kegotip, keydnap, kingslayer, kolab,
koobface, korgo, korplug, kovter, kradellsh, kulekmoko,
lazarus, locky, lollipop, lotus_blossom, luckycat, majikpos,
malwaremustdie, marsjoke, mdrop, mebroot, mestep, mhretriev,
miniduke, misogow, modpos, morto, nanocor, nbot, necurs,
nemeot, neshuta, nettraveler, netwire, neurevt, nexlogger,
nivdort, nonbolqu, nuqel, nwt, nymaim, odcodc, oficla, onkods,
optima, osx_keranger, osx_keydnap, osx_salgorea,
osx_wirelurker, palevo, pdfjsc, pegasus, pepperat, phytob,
picgoo, pift, plagent, plugx, ponmocup, poshcoder, potao,
powelike, proslikefan, pushdo, pykspa, qakbot, quasar, ramnit,
ransirac, reactorbot, redoctober, redsip, remcos, renocide,
reveton, revetrat, rovnix, runforestrun, russian_doll, rustock,
sakurel, sality, satana, sathurbot, scarcruft, scarletmimic,
scieron, seaduke, sednit, sefnit, selfdel, shifu, shylock,
siesta, silentbrute, silly, simda, sinkhole_abuse,
sinkhole_anubis, sinkhole_arbor, sinkhole_bitdefender,
sinkhole_blacklab, sinkhole_botnethunter, sinkhole_certgovau,
sinkhole_certpl, sinkhole_checkpoint, sinkhole_cirtdk,
sinkhole_conficker, sinkhole_cryptolocker, sinkhole_drweb,
sinkhole_dynadot, sinkhole_dyre, sinkhole_farsight,
sinkhole_fbizeus, sinkhole_fitsec, sinkhole_fnord,
sinkhole_gameoverzeus, sinkhole_georgiatech, sinkhole_gladtech,
sinkhole_honeybot, sinkhole_kaspersky, sinkhole_microsoft,
sinkhole_rsa, sinkhole_secureworks, sinkhole_shadowserver,
sinkhole_sidnlabs, sinkhole_sinkdns, sinkhole_sofacy,
sinkhole_sugarbucket, sinkhole_tech, sinkhole_unknown,
sinkhole_virustracker, sinkhole_wapacklabs, sinkhole_zinkhole,
skeeyah, skynet, skyper, smsfakesky, snake, snifula, snort,
sockrat, sofacy, sohanad, spyeye, stabuniq, stonedrill,
stuxnet, synolocker, tdss, teamspy, teerac, teslacrypt,
themida, tibet, tinba, torpig, torrentlocker, troldesh, turla,
unruy, upatre, utoti, vawtrak, vbcheman, vinderuf, virtum,
virut, vittalia, vobfus, volatilecedar, vundo, waledac,
waterbug, wecorl, wndred, xadupi, xcodeghost, xtrat, yenibot,
yimfoca, zaletelly, zcrypt, zemot, zeroaccess, zeus, zherotee,
zlader, zlob, zombrari, zxshell, etc.

Architecture

Maltrail is based on the Traffic -> Sensor <-> Server <-> Client architecture. Sensor(s) is a standalone component running on the monitoring node (e.g. Linux platform connected passively to the SPAN/mirroring port or transparently inline on a Linux bridge) or at the standalone machine (e.g. Honeypot) where it "monitors" the passing Traffic for blacklisted items/trails (i.e. domain names, URLs and/or IPs). In case of a positive match, it sends the event details to the (central) Server where they are being stored inside the appropriate logging directory (i.e. LOG_DIR described in the Configuration section). If Sensor is being run on the same machine as Server (default configuration), logs are stored directly into the local logging directory. Otherwise, they are being sent via UDP messages to the remote server (i.e. LOG_SERVER described in the Configuration section).
Server's primary role is to store the event details and provide back-end support for the reporting web application. In default configuration, server and sensor will run on the same machine. So, to prevent potential disruptions in sensor activities, the front-end reporting part is based on the "Fat client" architecture (i.e. all data post-processing is being done inside the client's web browser instance). Events (i.e. log entries) for the chosen (24h) period are transferred to the Client, where the reporting web application is solely responsible for the presentation part. Data is sent toward the client in compressed chunks, where they are processed sequentially. The final report is created in a highly condensed form, practically allowing presentation of virtually unlimited number of events.
Note: Server component can be skipped altogether, and just use the standalone Sensor. In such case, all events would be stored in the local logging directory, while the log entries could be examined either manually or by some CSV reading application.

Quick start

The following set of commands should get your Maltrail Sensor up and running (out of the box with default settings and monitoring interface "any"):
sudo apt-get install git python-pcapy
git clone https://github.com/stamparm/maltrail.git
cd maltrail
sudo python sensor.py
To start the (optional) Server on same machine, open a new terminal and execute the following:
[[ -d maltrail ]] || git clone https://github.com/stamparm/maltrail.git
cd maltrail
python server.py
To test that everything is up and running execute the following:
ping -c 1 136.161.101.53
cat /var/log/maltrail/$(date +"%Y-%m-%d").log
To stop Sensor and Server instances (if running in background) execute the following:
sudo pkill -f sensor.py
pkill -f server.py
Access the reporting interface (i.e. Client) by visiting the http://127.0.0.1:8338 (default credentials: admin:changeme!) from your web browser:
Malicious Traffic Detection System
Malicious Traffic Detection System 101Scratch

Aug 30, 2017

Disable IPv6 Permantly

this tutorial is how to disable ipv6 on linux, for the first go to /etc/sysctl.conf and add the following script:

sudo nano /etc/sysctl.conf and add following lines

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
Disable IPv6 Permantly On Linux
Disable IPv6 Permantly.
Now run following command:
sudo sysctl -p
then your ipv6 automatically disabled by sysctl, to open it again simply delete the script above and do update sysctl back :)

How to Record Terminal Sessions

Install Asciinema

Record Terminal
How to Record Terminal Sessions.


Linux Distro

Fedora


sudo yum install asciinema

Ubuntu


sudo apt-add-repository ppa:zanchey/asciinema

sudo apt-get update

sudo apt-get install asciinema

Arch Linux


pacman -S asciinema

Gentoo Linux


emerge -av asciinema

openSUSE

zypper in asciinema

via Pip

asciinema is available on PyPI and can be installed with pip (Python 3 required):
sudo pip3 install asciinema
This is the universal installation method for all operating systems, which always provides the latest version.

Record terminal session

This is the single most important command in asciinema, since it is how you utilize this tool’s main job.

By running asciinema rec [filename] you start a new recording session. The command (process) that is recorded can be specified with -c option (see below), and defaults to $SHELL which is what you want in most cases.

Recording finishes when you exit the shell (hit Ctrl+D or type exit). If the recorded process is not a shell then recording finishes when the process exits.

If the filename argument is given then the resulting recording (called asciicast) is saved to a local file. It can later be replayed with asciinema play <filename> and/or uploaded to asciinema.org with asciinema upload <filename>. If the filename argument is omitted then (after asking for confirmation) the resulting asciicast is uploaded to asciinema.org for further playback in a web browser.

ASCIINEMA_REC=1 is added to recorded process environment variables. This can be used by your shell’s config file (.bashrc, .zshrc) to alter the prompt or play a sound when shell is being recorded.

Replay recorded asciicast in a terminal

This command replays given asciicast (as recorded by rec command) directly in your terminal.

Playing from a local file:
asciinema play /path/to/asciicast.json

Playing from HTTP(S) URL:
asciinema play https://asciinema.org/a/22124.json
asciinema play http://example.com/demo.json

Playing from asciicast page URL (requires <link rel="alternate" type="application/asciicast+json" href="....json"> in page’s HTML):
asciinema play https://asciinema.org/a/22124
asciinema play http://example.com/blog/post.html

Playing from stdin:
cat /path/to/asciicast.json | asciinema play -
ssh user@host cat asciicast.json | asciinema play -

Playing from IPFS:
asciinema play ipfs:/ipfs/QmcdXYJp6e4zNuimuGeWPwNMHQdxuqWmKx7NhZofQ1nw2V
asciinema play fs:/ipfs/QmcdXYJp6e4zNuimuGeWPwNMHQdxuqWmKx7NhZofQ1nw2V

Available options:
-w, --max-wait=<sec> - Reduce replayed terminal inactivity to max seconds

NOTE: it is recommended to run asciinema play in a terminal of dimensions not smaller than the one used for recording as there’s no “transcoding” of control sequences for new terminal size.

Upload recorded asciicast to asciinema.org site

This command uploads given asciicast (as recorded by rec command) to asciinema.org for further playback in a web browser.

asciinema rec demo.json + asciinema play demo.json + asciinema upload demo.json is a nice combo for when you want to review an asciicast before publishing it on asciinema.org.

Manage recordings on asciinema.org account

If you want to manage your recordings on asciinema.org (set title/description, delete etc) you need to authenticate. This command displays the URL you should open in your web browser to do that.

On every machine you run asciinema recorder, you get a new, unique API token. If you’re already logged in on asciinema.org website and you run asciinema auth from a new computer then this new device will be linked to your account.

You can synchronize your config file (which keeps the API token) across the machines so all of them use the same token, but that’s not necessary. You can assign new tokens to your account from as many machines as you want.
Nara: Here

 

AdBlock Detected!

Like this blog? Keep us running by whitelisting this blog in your ad blocker.

This is how to whitelisting this blog in your ad blocker.

Thank you!

×