Quante minacce in famiglia in un giorno?

Quanti threat in un giorno accadono ad una famiglia che usa mobile, laptop, smart tv ecc?

E’ sempre stata una risposta a cui ho voluto dare una forma precisa.

In particolar modo questa ricercam si basa sui threat ricevuti da una famiglia normale navigando semplicemente browser + app.

Per capirlo ho installato una semplice distro come Nethserver a casa di alcuni amici che usano la tecnologia puramente per email, navigare e social media.

Nethserver si presta bene per questo, facile da installare e configurare, funzioni di firewall, ips, threatshield.

Configurazione:

Firewall
Configurazione standard traffico verso e da internet allowed bloccando solo smb, rpc e simili, in modo da non diventare una honeypot ma concentrandosi sul traffico app e browser


IPS
Nethserver ha un modulo per installare suricata e alcune rules che usano IoC da abuseipdb e alienvault.
Configurato in modo da bloccare solo malware,compromised,malicious dns e le regole DShield


Threatshield
Altro modulo scaricabile e di facile installazione configurato con IP blacklist e DNS blacklist direttamente da url, senza creare una repo personale, (dns blacklist repo non aggiornata da circa 5 mesi). La confgiurazione usata non bloccava nessun inoltro li registrava semplicemente


DNS usati
Ho usato i dns di cloudflare e quad9 per avere un altro layer di filtraggio.


Ogni client (pc,laptop,mobile,smartv) + stato configurato in statico in modo da usare il nethserver come gateway

Una volta configurato e sicuri che tutto funzionasse in modo decente, sono state eseguite prove su malicious website e ip in blocco per vedere il comportamento, tutto ok.

L’esperimento è durato circa 2 mesi e i risultati sono stati tragicomici.

Infatti abbiamo una media di 1.000 threat registrati nella mattinata che diventano circa 8.000 threat verso le 23 dello stesso giorno.

Ma di che tipo sono questi threat?
Qui la parte interessante

La maggior parte delle “threat” proviene dai tracker dei siti blasonati:

Qui siamo intorno al 37,14% di threat ratio secondo Threatshield.

Andando a vedere i log notiamo che i siti “malevoli” intesi come dropper di trojan o malware sono circa lo 0,2% della settimana.
Il resto sono come vediamo tracker di social e di google.

Tutti noi sappiamo di esser feed per questi colossi e questo articolo non fa altro che concretizzare quanto abbiamo sempre pensato e saputo senza dati alla mano.
Quindi è possibile togliersi dallo sfamare i leviatani? Penso di si e sarà materia del prossimo esperimento che combinerà blocchi e datanoise.

Malicious powershell script uninstall antivirus

PowerShell will attempt to uninstall Antivirus products that match names like: “Kaspersky”, “avast”, “Eset”, “avp”, “Security”, “AntiVirus”, “Norton Security”. It will reconfigure “Malwarebytes Anti-Malware”.
First appearance on 2020-07 recently back with mass network crawling and downloading “gim.jsp” into open services (SMB)

***IP was reported 14 October as dropper of Lemon Duck Crypto Miner***

The example was dropped into one of our honeypot, sample on demand

OTX Alienvault IoC

Virustotal


for sample request: info@centurialabs.org

Maladvertisement huge campaign and scam

A huge and aggressive maladvertisement campaign and in some case scam hit Italy and Europe generally. Is quite aggressive (3 email every 25 minutes) and the body of email contain template for other phishing attempts. No malware find right now but account manipolation. – Often u can see reply to a rambler and gmail addressess. Behind everything seem a domain called affpartners.com (nothing on it) and that domain use efty.com as hosting provider.

Alienvault OTX IoC

phishing campaign

NORTON
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reply to: jeletaturik@rambler.ru
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Havelsan leaks?

Sta iniziando a girare in rete un leak di circa 800 MB di corrispondenza email della Havelsan.

HAVELSAN è una società di software e sistemi turca con presenza commerciale nei settori della difesa e IT. Ha sede ad Ankara, in Turchia, con società sussidiarie e uffici in Turchia e all’estero.

Chi ha postato il file dichiara:
These files were downloaded from multiple email accounts that were used by the employees of Havelsan and include highly confidential documents regarding the military tech developed by Havelsan which is currently in use by Turkey and other NATO members. The main reason for posting this leak is to warn NATO and its members to not attempt to step out of its boundries or to seek global dominance. The government of Turkey should know that violence only breeds more violence.

In un altro file vengono fornite le email da cui si son presi i leaks e le corrispettive password

l’Archivio contiene:
documenti word, pdf, excel
archivi
email
software

esempio di file: