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Di video compromettenti, riscatti Bitcoin e ondate di phishing (Aggiornato)

Di video compromettenti, riscatti Bitcoin e ondate di phishing

Ne fai parte anche tu (in realtà il tuo indirizzo di posta elettronica aziendale e/o privato), inevitabilmente: “benvenuto a bordo” del più corposo gruppo di vittime di phishing che io ricordi da qualche anno a questa parte. Radio, TV, giornali, ormai puoi leggere articoli in proposito anche nei bagni degli Autogrill o delle stazioni ferroviarie, subito accanto ai numeri di cellulare associati a piccanti sconcerie. Hai visitato un sito web per adulti e qualcuno ha catturato video e audio passando rispettivamente da webcam e microfono del tuo PC, a prescindere che questo sia possibile o no (perché di vittime prive di entrambe le periferiche ne esistono eccome), si parla persino di indirizzi di posta elettronica non presidiati e magari utilizzati da software di terze parti, io ho scoperto che il software di HelpDesk aziendale visita siti web zozzi senza farsi scoprire, bravo!

Calmati, respira, nulla di quanto detto nella mail è vero, non esistono video compromettenti che ti riguardano a meno che non sia stato tu –coscientemente– a volerli mettere in rete, e in tal caso direi che la preoccupazione viaggia sotto lo zero.

Nella versione italiana, l’attuale ondata prevede un testo che si ripete (come ogni attacco classico) e che modifica solo il campo mittente / destinatario e il valore economico del riscatto richiesto, mantenendo inalterato tutto il resto.

Le e-mail

Ciao!

Come avrai notato, ti ho inviato un’email dal tuo account.
Ciò significa che ho pieno accesso al tuo account.

Ti sto guardando da alcuni mesi.
Il fatto è che sei stato infettato da malware attraverso un sito per adulti che hai visitato.
Se non hai familiarità con questo, ti spiegherò.
Virus Trojan mi dà pieno accesso e controllo su un computer o altro dispositivo.
Ciò significa che posso vedere tutto sullo schermo, accendere la videocamera e il microfono, ma non ne sai nulla.

Ho anche accesso a tutti i tuoi contatti e tutta la tua corrispondenza.

Perché il tuo antivirus non ha rilevato il malware?
Risposta: il mio malware utilizza il driver, aggiorno le sue firme ogni 4 ore in modo che Il tuo antivirus era silenzioso.

Ho fatto un video che mostra come ti accontenti nella metà sinistra dello schermo, e nella metà destra vedi il video che hai guardato.
Con un clic del mouse, posso inviare questo video a tutte le tue e-mail e contatti sui social network.
Posso anche postare l’accesso a tutta la corrispondenza e ai messaggi di posta elettronica che usi.

Se vuoi impedirlo, trasferisci l’importo di 238€ al mio indirizzo bitcoin (se non sai come fare, scrivi a Google: “Compra Bitcoin”).

Il mio indirizzo bitcoin (BTC Wallet) è: 17YKd1iJBxu616JEVo15PsXvk1mnQyEFVt

Dopo aver ricevuto il pagamento, eliminerò il video e non mi sentirai mai più.
Ti do 48 ore per pagare.
Non appena apri questa lettera, il timer funzionerà e riceverò una notifica.

Presentare un reclamo da qualche parte non ha senso perché questa email non può essere tracciata come e il mio indirizzo bitcoin.
Non commetto errori!

Se scopro di aver condiviso questo messaggio con qualcun altro, il video verrà immediatamente distribuito.

Auguri!

In inglese la storia non cambia (c’è un diverso BTC Wallet, se ci fai bene caso), questo è ciò che ho intercettato tramite l’Exchange in Cloud che utilizziamo in ufficio e una Transport Rule creata ad-hoc, di cui ti parlerò tra breve:

Hi! As you may have noticed, I sent you an email from your account. This means that I have full access to your acc: On moment of crack USER@CONTOSO.COM password: 54428949 You say: this is my, but old password! Or: I will change my password at any time! Of course! You will be right, but the fact is that when you change the password, my malicious code every time saved a new one! I’ve been watching you for a few months now. But the fact is that you were infected with malware through an adult site that you visited. If you are not familiar with this, I will explain. Trojan Virus gives me full access and control over a computer or other device. This means that I can see everything on your screen, turn on the camera and microphone, but you do not know about it. I also have access to all your contacts and all your correspondence from e-mail and messangers. Why your antivirus did not detect my malware? Answer: My malware uses the driver, I update its signatures every 4 hours so that your antivirus is silent. I made a video showing how you satisfy yourself in the left half of the screen, and in the right half you see the video that you watched. With one click of the mouse, I can send this video to all your emails and contacts on social networks. I can also post access to all your e-mail correspondence and messengers that you use. If you want to prevent this, transfer the amount of $791 to my bitcoin address (if you do not know how to do this, write to Google: “Buy Bitcoin”). My bitcoin address (BTC Wallet) is: 1KeCBKUgQDyyMpaXhfpRi2qUvyrjcsT44o After receiving the payment, I will delete the video and you will never hear me again. I give you 48 hours to pay. I have a notice reading this letter, and the timer will work when you see this letter. Filing a complaint somewhere does not make sense because this email cannot be tracked like my bitcoin address. I do not make any mistakes. If I find that you have shared this message with someone else, the video will be immediately distributed. Bye!

18/1/19

Una nuova variante è da poco comparsa, stavolta lo slang è molto “American-Yo”, la sostanza non cambia e si parla sempre di catture video, atti osceni in luogo evidentemente non pubblico e minacce di condivisione a contatti e amici su Facebook (la cosa simpatica è colpire gente che Facebook neanche lo ha, per dire):

ATTN: NomeUtente@contoso.com THIS IS NOT A JOKE – I AM DEAD SERIOUS! Hi perv, The last time you visited a p0rnographic website with teens, you downloaded and installed software I developed. My program has turned on your camera and recorded the process of your masturbation. My software has also downloaded all your email contact lists and a list of your friends on Facebook. I have both the ‘NomeUtente.mp4‘ with your masturbation as well as a file with all your contacts on my hard drive. You are very perverted! If you want me to delete both the files and keep the secret, you must send me Bitcoin payment. I give you 72 hours for payment. If you don’t know how to send Bitcoins, visit Google. Send 2.000 USD to this Bitcoin address immediately: 3E9Wbr5Wip7V5PFrrSxkur2tLfYeC5eiQm (copy and paste) 1 BTC = 3,580 USD right now, so send exactly 0.566837 BTC to the address provided above. Do not try to cheat me! As soon as you open this Email I will know you opened it. This Bitcoin address is linked to you only, so I will know if you sent the correct amount. When you pay in full, I will remove the files and deactivate my program. If you don’t send the payment, I will send your masturbation video to ALL YOUR FRIENDS AND ASSOCIATES from your contact list I hacked. Here are the payment details again: Send 0.566837 BTC to this Bitcoin address: —————————————- 3E9Wbr5Wip7V5PFrrSxkur2tLfYeC5eiQm —————————————- You саn visit police but nobody will help you. I know what I am doing. I don’t live in your country and I know how to stay anonymous. Don’t try to deceive me – I will know it immediately – my spy ware is recording all the websites you visit and all keys you press. If you do – I will send this ugly recording to everyone you know, including your family. Don’t cheat me! Don’t forget the shame and if you ignore this message your life will be ruined. I am waiting for your Bitcoin payment. If you need more time to buy and send 0.566837 BTC, open your notepad and write ’48h plz’. I will consider giving you another 48 hours before I release the vid. Anonymous Hacker

Nota di merito per il “open your notepad and write ’48h plz’“, onore al criminale che tutto sommato ha un cuore e permette di avere un po’ più di tempo per racimolare la cifra ?

21/1/19

Nuovo giro, nuova mail, in realtà ben poco differente dall’ultima che ho pubblicato in questa pagina, contiene infatti un “ultimo avvertimento” prima di diffondere il materiale rubato. In compenso c’è sempre l’ulteriore scappatoia del “ancora 5 minuti, mamma!” che si può mettere in atto lasciando un messaggio su blocco note ?

LAST WARNING NomeUtente@contoso.com! You have the last chance to save your social life – I am not kidding!! I give you the last 72 hours to make the payment before I send the video with your masturbation to all your friends and associates. The last time you visited a erotic website with young Teens, you downloaded and installed the software I developed. My program has turned on your camera and recorded your act of Masturbation and the video you were masturbating to. My software also downloaded all your email contact lists and a list of your Facebook friends. I have both the ‘NomeUtente.mp4‘ with your masturbation and a file with all your contacts on my hard drive. You are very perverted! If you want me to delete both files and keep your secret, you must send me Bitcoin payment. I give you the last 72 hours. If you don’t know how to send Bitcoins, visit Google. Send 2000 USD to this Bitcoin address immediately: 3LXeenwA2rTat1EeqNzhqXzZZmvYyCytUH (copy and paste) 1 BTC = 3470 USD right now, so send exactly 0.588204 BTC to the address above. Do not try to cheat me! As soon as you open this Email I will know you opened it. This Bitcoin address is linked to you only, so I will know if you sent the correct amount. When you pay in full, I will remove both files and deactivate my software. If you don’t send the payment, I will send your masturbation video to ALL YOUR FRIENDS AND ASSOCIATES from your contact list I hacked. Here are the payment details again: Send 0.588204 BTC to this Bitcoin address: —————————————- 3LXeenwA2rTat1EeqNzhqXzZZmvYyCytUH —————————————- You саn visit the police but nobody will help you. I know what I am doing. I don’t live in your country and I know how to stay anonymous. Don’t try to deceive me – I will know it immediately – my spy ware is recording all the websites you visit and all keys you press. If you do – I will send this ugly recording to everyone you know, including your family. Don’t cheat me! Don’t forget the shame and if you ignore this message your life will be ruined. I am waiting for your Bitcoin payment. Brandon Anonymous Hacker P.S. If you need more time to buy and send 0.588204 BTC, open your notepad and write ’48h plz’. I will consider giving you another 48 hours before I release the vid, but only when I really see you are struggling to buy bitcoin.

22/1/19

L’attacco è stato ormai sdoganato e chiunque può provarci cavalcando l’onda del panico ingiustificato. Rimane pressoché tutto invariato: come ti hanno spiato, come ti hanno registrato e come puoi pagare il riscatto per distruggere le fantomatiche prove. Cambiano i mittenti (indirizzi di posta elettronica sparsi per molti TLD, italiani compresi), l’oggetto della mail (con un ID progressivo) e il modo in cui si riportano i dollari richiesti (testuale / numero), anch’essi variabili in base a una scelta evidentemente casuale. Ti faccio dare un’occhiata ad alcune di queste mail intercettate per capire meglio di cosa sto parlando:

Passando poi al testo contenuto in una di queste; noterai che stavolta non si fa riferimento alcuno all’indirizzo della casella di posta “colpita“, il testo nasce generico.

Hello You as well as everybody have been warned many times.But,obviously you didnt use internet carefuly.Whats the problem?- U are thinking right now.Lets start with the fact that I put the virus on a webpage with videos for adults (site with pоrn content) (u know whats up).Object clicked on a play button and device began working as dedicated desktop with keylogger function.So all cameras and screen instantly started recording.Then my software collected all your contacts from messengers,e-mails and social networks. So what do we have now? I created the split screen video (1st part-screen record(you have a great taste lmao),2nd part- cam rec.) and all your contacts.I think its not good news. Hence I suppose that five hundred fifty usd is adequately for this smallwee fail. My bitcoin wallet – 1DGMALtWHn3z1EvXv4mDWxvwx99MUSWbdE Ask internet how to use it.It is not very hard.Just write “how to buy bitcoins” I give u 1 day after reading this message(I placed a special pixel in it,Ill see when you open it). If I don’t recieve the necessary amount All your contacts will recieve video with you Since I receive bitcoin- the сompromising will be destroyed.If u charge me to show evidence,reply yeah and Ill send this video to three contacts Ive collected from you. Can go to cops,but searching me is more long-lasting than 1 day,im Romanian,so you will be a star among friends.

25/1/19

Titolo nuovo, sostanza del contenuto invariata e ancora una volta generica, questo è il nuovo tipo di mail che viene intercettata con oggetto che spesso resta fisso sul “Be sure to read this message! Your personal data is threatened!

Hello! As you may have noticed, I sent you an email from your account. This means that I have full access to your account. I’ve been watching you for a few months now. The fact is that you were infected with malware through an adult site that you visited. If you are not familiar with this, I will explain. Trojan Virus gives me full access and control over a computer or other device. This means that I can see everything on your screen, turn on the camera and microphone, but you do not know about it. I also have access to all your contacts and all your correspondence. Why your antivirus did not detect malware? Answer: My malware uses the driver, I update its signatures every 4 hours so that your antivirus is silent. I made a video showing how you satisfy yourself in the left half of the screen, and in the right half you see the video that you watched. With one click of the mouse, I can send this video to all your emails and contacts on social networks. I can also post access to all your e-mail correspondence and messengers that you use. If you want to prevent this, transfer the amount of $664 to my bitcoin address (if you do not know how to do this, write to Google: “Buy Bitcoin”). My bitcoin address (BTC Wallet) is: 1Jh1miFmhTmGQvn6Zejaqg85viD4k1vVjG After receiving the payment, I will delete the video and you will never hear me again. I give you 48 hours to pay. I have a notice reading this letter, and the timer will work when you see this letter. Filing a complaint somewhere does not make sense because this email cannot be tracked like my bitcoin address. I do not make any mistakes. If I find that you have shared this message with someone else, the video will be immediately distributed. Best wishes!

1/2/19

Un solo aggiornamento per raccogliere altri tre tipi di mail che sto intercettando negli ultimi tempi. Nel terzo esempio si fa addirittura un salto indietro nel tempo per far capire alla potenziale vittima da quanto l’attaccante abbia possesso delle risorse della macchina colpita. In comune hanno il riferimento alle solite 48 ore per il pagamento e la costante del pagamento bitcoin (la cifra è sempre variabile). Solo l’ultima ripropone l’indirizzo di posta elettronica della vittima.

Your account has been hacked! You need to unlock.
Hello! I’m a programmer who cracked your email account and device about half year ago. You entered a password on one of the insecure site you visited, and I catched it. Of course you can will change your password, or already made it. But it doesn’t matter, my rat software update it every time. Please don’t try to contact me or find me, it is impossible, since I sent you an email from your email account. Through your e-mail, I uploaded malicious code to your Operation System. I saved all of your contacts with friends, colleagues, relatives and a complete history of visits to the Internet resources. Also I installed a rat software on your device and long tome spying for you. You are not my only victim, I usually lock devices and ask for a ransom. But I was struck by the sites of intimate content that you very often visit. I am in shock of your reach fantasies! Wow! I’ve never seen anything like this! I did not even know that SUCH content could be so exciting! So, when you had fun on intime sites (you know what I mean!) I made screenshot with using my program from your camera of yours device. After that, I jointed them to the content of the currently viewed site. Will be funny when I send these photos to your contacts! And if your relatives see it? BUT I’m sure you don’t want it. I definitely would not want to … I will not do this if you pay me a little amount. I think $700 is a nice price for it! I accept only Bitcoins. My BTC wallet: 18cFCmESfC6PKn8LL6HPbtK2EWLLdsryXp If you have difficulty with this – Ask Google “how to make a payment on a bitcoin wallet”. It’s easy. After receiving the above amount, all your data will be immediately removed automatically. My virus will also will be destroy itself from your operating system. My Trojan have auto alert, after this email is looked, I will be know it! You have 2 days (48 hours) for make a payment. If this does not happen – all your contacts will get crazy shots with your dirty life! And so that you do not obstruct me, your device will be locked (also after 48 hours) Do not take this frivolously! This is the last warning! Various security services or antiviruses won’t help you for sure (I have already collected all your data). Here are the recommendations of a professional: Antiviruses do not help against modern malicious code. Just do not enter your passwords on unsafe sites! I hope you will be prudent. Bye.

This account has been hacked! Change your password right now!
You may not know me and you are probably wondering why you are getting this e mail, right? I’m a hacker who cracked your email and devices a few months ago. Do not try to contact me or find me, it is impossible, since I sent you an email from YOUR hacked account. I setup a malware on the adult vids (porno) web-site and guess what, you visited this site to have fun (you know what I mean). While you were watching videos, your internet browser started out functioning as a RDP (Remote Control) having a keylogger which gave me accessibility to your screen and web cam. After that, my software program obtained all information. You entered a passwords on the websites you visited, and I intercepted it. Of course you can will change it, or already changed it. But it doesn’t matter, my malware updated it every time. What did I do? I backuped device. All files and contacts. I created a double-screen video. 1st part shows the video you were watching (you’ve got a good taste haha . . .), and 2nd part shows the recording of your web cam. exactly what should you do? Well, in my opinion, $1000 (USD) is a fair price for our little secret. You’ll make the payment by Bitcoin (if you do not know this, search “how to buy bitcoin” in Google). My Bitcoin wallet Address: 1CcYkUKB5ViUJyNdKynSmt7H4YHiru5Ecf (It is cAsE sensitive, so copy and paste it) Important: You have 48 hour in order to make the payment. (I’ve a unique pixel in this e mail, and at this moment I know that you have read through this email message). To track the reading of a message and the actions in it, I use the facebook pixel. Thanks to them. (Everything that is used for the authorities can help us.) If I do not get the BitCoins, I will certainly send out your video recording to all of your contacts including relatives, coworkers, and so on.

The decision to suspend your account. Waiting for payment.
Hello! I have very bad news for you. 12/10/2018 – on this day I hacked your OS and got full access to your account UTENTE@CONTOSO.COM So, you can change the password, yes… But my malware intercepts it every time. How I made it: In the software of the router, through which you went online, was a vulnerability. I just hacked this router and placed my malicious code on it. When you went online, my trojan was installed on the OS of your device. After that, I made a full dump of your disk (I have all your address book, history of viewing sites, all files, phone numbers and addresses of all your contacts). A month ago, I wanted to lock your device and ask for a not big amount of btc to unlock. But I looked at the sites that you regularly visit, and I was shocked by what I saw!!! I’m talk you about sites for adults. I want to say – you are a BIG pervert. Your fantasy is shifted far away from the normal course! And I got an idea…. I made a screenshot of the adult sites where you have fun (do you understand what it is about, huh?). After that, I made a screenshot of your joys (using the camera of your device) and glued them together. Turned out amazing! You are so spectacular! I’m know that you would not like to show these screenshots to your friends, relatives or colleagues. I think $641 is a very, very small amount for my silence. Besides, I have been spying on you for so long, having spent a lot of time! Pay ONLY in Bitcoins! My BTC wallet: 145SmyE7DBEQExsnXZobojbQqr5UdgbCHh You do not know how to use bitcoins? Enter a query in any search engine: “how to replenish btc wallet”. It’s extremely easy For this payment I give you two days (48 hours). As soon as this letter is opened, the timer will work. After payment, my virus and dirty screenshots with your enjoys will be self-destruct automatically. If I do not receive from you the specified amount, then your device will be locked, and all your contacts will receive a screenshots with your “enjoys”. I hope you understand your situation. – Do not try to find and destroy my virus! (All your data, files and screenshots is already uploaded to a remote server) – Do not try to contact me (this is not feasible, I sent you an email from your account) – Various security services will not help you; formatting a disk or destroying a device will not help, since your data is already on a remote server. P.S. You are not my single victim. so, I guarantee you that I will not disturb you again after payment! This is the word of honor hacker I also ask you to regularly update your antiviruses in the future. This way you will no longer fall into a similar situation. Do not hold evil! I just do my job. Have a nice day!

Complessità spicciole

Appurato che l’utilizzo non autorizzato di dispositivi come microfono e webcam è stato reso possibile in passato da backdoor scoperte e rese poi pubbliche, quindi ormai inutilizzabili (anche di questi argomenti puoi leggere ciò che vuoi sul web, non è difficile), e che è quindi consigliato prendere precauzioni (molti PC oggi propongono occhielli che è possibile chiudere quando non si utilizza la webcam, e ci sono delle applicazioni che avvisano nel caso in cui un qualsiasi software o servizio stia tentando l’accesso silente al microfono, per esempio), quanto affermato dall’autore dell’attacco è abbastanza improbabile:

pourparler

Consigli

Immagino tu ne stia cercando, è ragionevole considerando che forse non sei ferrato in materia e probabilmente un piccolo attacco di panico lo hai anche avuto. Provo a buttare giù qualche linea guida che spero possa tornarti utile, ma se vuoi chiedere dell’altro non farti problemi, sei il benvenuto, puoi utilizzare l’area commenti qui di seguito o se preferisci (e sei iscritto a Reddit) il sub /r/Gioxx.

Exchange in Cloud

Se sei amministratore di server Exchange in Cloud (la soluzione proposta da Office 365) crea una nuova Transport Rule per proteggere i tuoi utenti. Collegati all’ECP e spostati sotto mail flowrules, quindi crea la regola partendo dal template di Bypass spam filtering (anche se così non sarà) e:

If the message…

Do the following…

Rule mode

Additional properties

La regola potrebbe certamente fermare in Quarantena del materiale lecito che nulla c’entra con l’attacco, ma considerando la quantità di mail oggi in ingresso ti assicuro che i falsi positivi possono essere contati sulle dita di una sola mano. Ti toccherà quindi tenere d’occhio la coda di mail bloccate, ma è cosa assai semplice (per il momento), che potrai fare più volte nel corso di una giornata (protection.office.com/#/quarantine, da mostrare per “Criterio“).

Sono ancora in contatto con il supporto Microsoft per migliorare ulteriormente l’intercettazione di queste mail tramite RegEx, aggiornerò l’articolo non appena ci saranno sviluppi (testati e funzionanti) in merito.

Letture e conclusioni

Ottenere il tuo indirizzo di posta elettronica e bersargliarlo con attacchi di questo tipo è cosa ormai assai semplice. Se non sei tu a inserirlo in moduli (e quindi database) facilmente attaccabili e dai quali ottenere –come manna dal cielo– informazioni facilmente rivendibili, saranno altri a farlo per conto tuo (senza necessariamente la tua autorizzazione), esempi pratici di ciò sono quelli discussi da Troy Hunt (ripresi poi in italiano da Michele Nasi) nel suo articolo The 773 Million Record “Collection #1” Data Breach (in italiano qui: ilsoftware.it/articoli.asp?tag=Diffuso-in-rete-un-archivio-con-773-milioni-di-indirizzi-email-e-password-verificate-se-ci-sono-anche-i-vostri_18617).

19/1/19

Aggiungo: krebsonsecurity.com/2019/01/773m-password-megabreach-is-years-old (merita qualche minuto del tuo tempo, perché non sempre ciò che gli occhi vedono corrisponde al vero).

Ti ho parlato già di strumenti come HIBP o Firefox Monitor, trovi qualche informazione in più qui: Firefox Monitor ti avvisa in caso di furto credenziali.

Occhi sempre bene aperti! ;-)


immagine di copertina: unsplash.com / author: rawpixel

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