Prevent being scammed by the 'On This Day I Hacked Your OS' email

Also Known As: possible malware infections
Damage level: Medium

What is "On this day I hacked your OS"?

"On this day I hacked your OS" is an email scam, which uses a blackmailing tactic called "sextortion" - it extorts money from users via threats to expose evidence of their 'sexual activity'. This scam claims to have obtained audio and visual content via the device's camera and microphone.

It informs users that this evidence will be sent to all of their contacts, unless a certain sum in transferred to the account of cyber criminals behind the rogue email. Note that these claims are false and no such compromising material exists. Emails of this type should be ignored.

On this day I hacked your OS spam campaign

The email entitled "Security alert! Review the sign-in details." states that the users' OS (Operating Systems) have been hacked and their email accounts are within the full control of cyber criminals. They claim to have access to users' address books, browsing history, file inventory, contacts' email addresses and telephone numbers.

Furthermore, users are informed that they have been under observation for several months due to an infection from a compromised adult-site, which they have visited previously. The virus then supposedly gave the criminals full access and control of the device, including webcam and microphone.

The anti-virus software was unable to detect this infection, since the malware uses a driver and its signature is updated every four hours. Through this alleged hacking, video/audio and screen recordings were made of users "satisfying" themselves.

The cyber criminals demand 771 USD to be transferred to their Bitcoin crypto-wallet, otherwise this humiliating material will be sent to all users' contacts. If payment is not made within 48 hours, the compromising video and content watched during the recording will apparently be sent to their contacts.

Users are promised that once the transaction is made, the video will be deleted and they will not be disturbed by these individuals again. The 48-hour countdown starts from the moment the email is opened. The message informs users that filing any type of complaint will not aid them, since the email and Bitcoin addresses cannot be traced.

The message ends with a warning informing users not to share this email with anyone, as this will result in immediate distribution of the compromising video. As mentioned, "On this day I hacked your OS" is a scam and none of the alleged content exists.

Additionally, the cyber criminals behind this scam have not infected your system - no evidence of sexual activity could have been acquired and the device's integrity has not been compromised. Never trust emails such as "On this day I hacked your OS" and simply ignore them.

Threat Summary:
Name "On this day I hac­ked your OS" email spam campaign.
Threat Type Phishing, Scam, Social Engineering, Fraud.
Fake Claim Cyber criminals claim to have infected the device with malware, which allowed them to record compromising audio/video. They threaten to share this content with the victim's contacts, unless a payment is made within the given time frame.
Cyber Criminal Cryptowallet Address (Bitcoin) 17Hni3UPjcS1BTKUwXFkJXoyF8oHwk7MiC, 1Q2pVgd9YradB42risptr8tsydKrVDSD2A, 17fjtBvkQCMJduzZQB4GZtxJvxgXrceSMt, 1D1CJ5msCAzvc838x5ZmfNWVv6d94U5grH
Ransom Size $771 in Bitcoin
Symptoms Unauthorized online purchases, changed online account passwords, identity theft, illegal access of the computer.
Distribution methods Deceptive emails, rogue online pop-up ads, search engine poisoning techniques, misspelled domains.
Damage Loss of sensitive private information, monetary loss, identity theft.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Scam emails are distributed using massive scale spam campaigns. Various tactics can be employed, not just "sextortion".

They range from "import" alerts to "prize" announcements. "Hacker Who Has Access To Your Operating System", "Your Device Was Infected With My Private Malware", and "WannaCry Hacker Group" are a few examples of other scams similar to "On this day I hacked your OS".

Typically, they involve threats to distribute compromising videos/screenshots of the victim, unless ransoms are paid. Cyber criminals prefer these payments to be made in digital currencies (e.g. cryptocurrencies, pre-paid vouchers, etc.), as these transactions are difficult/impossible to trace.

Note that the functions of these emails can differ - they can be used to proliferate ransomware and other malware.

How do spam campaigns infect computers?

Infections via spam campaigns are caused by opening attached files found within deceptive emails. These are often marked as "official", "important", "urgent" or similarly highlighted as priority mail. The infectious attachments come in various formats, such as archive (ZIP, RAR) and executable (.exe, .run) files, Microsoft Office and PDF documents, JavaScript, etc.

When these files are run, executed or otherwise opened, they begin downloading/installing malicious software. For example, MS Office documents ask users to enable macro commands (to enable editing). If allowed, they are triggered to infect systems.

How to avoid installation of malware

Do not read suspicious/irrelevant emails, especially those received from unknown senders. Attachments found in these messages must never be opened, since the files are the source of potential infections.

Use Microsoft Office versions released after year 2010, as they have a "Protected View" mode, which prevents dangerous documents from downloading/installing malware.

Download only from official and verified sources. P2P sharing networks (BitTorrent, eMule, Gnutella, etc.), free file-hosting websites, third party downloaders and similar channels are classed as untrustworthy and should not be used. Untrusted download sources are more likely to offer content bundled with malicious software.

Programs should be activated and updated using functions/tools provided by genuine developers. Illegal activation tools ("cracks") and third party updaters are high-risk. Have a reputable anti-virus/anti-spyware suite installed and kept up-to-date. Use this software to perform regular system scans and for the removal of detected threats.

If you have already opened malicious attachments, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the "On this day I hacked your OS" email message:


09/08/2019 - on this day I hacked your OS and got full access to your account ************

You can check it - I sent this message from your account.

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).

This means that I have full access to your device and accounts. 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.
Virus gives me full access and control your devices.
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.
If you want to prevent this, transfer the amount of $771 to my bitcoin address
(if you do not know how to do this, write to Google: "Buy Bitcoin").
My bitcoin address (BTC Wallet) is: 1Q2pVgd9YradB42risptr8tsydKrVDSD2A, 17fjtBvkQCMJduzZQB4GZtxJvxgXrceSMt, 1D1CJ5msCAzvc838x5ZmfNWVv6d94U5grH

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.

Appearance of a Polish version of "On This Day I Hacked Your OS" email scam:

On This Day I Hacked Your OS scam email Polish version

Text presented within this email:

Pozdrawiam was!

Mam dla ciebie złe wieści.
02/01/2020 - w tym dniu włamałem się do twojego systemu operacyjnego i uzyskałem pełny dostęp do twojego konta ****.

Jak to zrobiłem:
Oprogramowanie routera, do którego podłączono Cię tego dnia w celu uzyskania dostępu do Internetu, miało lukę w zabezpieczeniach.
Najpierw zhakowałem ten router i umieściłem na nim mój złośliwy kod.
Po podłączeniu się do niego w celu uzyskania dostępu do Internetu mój trojan został zainstalowany w systemie operacyjnym urządzenia.

Potem zrobiłem pełną kopię twojego dysku (mam całą książkę adresową, historię przeglądania stron, wszystkie twoje pliki, numery telefonów i adresy wszystkich kontaktów).

Na początku chciałem zaszyfrować twoje urządzenie i poprosić o niewielką kwotę do odblokowania.
Ale przypadkowo widziałem witryny, które regularnie odwiedzasz. Jestem zszokowany twoimi ulubionymi zasobami.
Mówię o witrynach dla dorosłych.

Chcę powiedzieć - jesteś wielkim zboczeńcem. Masz nienormalną fantazję, której nie wszyscy zrozumieją poprawnie!

Potem wpadłem na to:
Zrobiłem zrzut ekranu z intymnej strony, na którym "cieszyłeś się"(wiesz o co mi chodzi, prawda?).
Zrobiłem zdjęcie twojej masturbacji (za pomocą aparatu na twoim urządzeniu), i w końcu połączyłem dwa zdjęcia:
masturbujesz się po lewej stronie i obiekt wzbudzenia po prawej stronie.
Świetna robota! Nie mam wątpliwości, że twoi przyjaciele lub znajomi będą zszokowani, jeśli to zobaczą.

Jestem głęboko przekonany, że nie chciałbyś nikomu pokazywać tych zdjęć.
Myślę, że 950€ to niewielka kwota za moje milczenie.
Ponadto - spędziłem nad tym dużo czasu!

Akceptuję pieniądze tylko w Bitcons.
Mój portfel BTC: 17Hni3UPjcS1BTKUwXFkJXoyF8oHwk7MiC

Nie wiesz, jak uzupełnić portfel Bitcoin?
W dowolnej wyszukiwarce napisz "jak uzupełnić portfel btc".
To łatwiejsze niż przelanie pieniędzy na kartę kredytową!

W przypadku płatności masz trochę więcej niż dwa dni (dokładnie 50 godzin).
Timer włączy się, gdy tylko otworzy się ten list. Tak, tak ... już się zaczęło!

Po dokonaniu płatności natychmiast zniszczę mojego wirusa i usuwa wszystkie pliki, które Cię narażą, a zapomnisz o tym nieprzyjemnym incydencie.
Pamiętaj, że jeśli nie otrzymam od ciebie powyższej kwoty, twoje urządzenie zostanie zablokowane, a wszystkie twoje kontakty otrzymają zdjęcia z twoją masturbacją.

Chcę, abyście zrozumieli powagę tej sytuacji:
- Nie próbuj znaleźć i zniszczyć mojego wirusa! (Wszystkie twoje dane są już przesłane na serwer zdalny).
- Nie próbuj się ze mną kontaktować (nie jest to możliwe, wysłałem ci ten e-mail z twojego zhakowanego konta).
- Różne usługi bezpieczeństwa nie pomogą, formatowanie dysku lub niszczenie urządzenia również nie pomoże, ponieważ dane są już na serwerze zdalnym.

P.S. Gwarantuję ci, że nie będę ci przeszkadzał po wypłacie, ponieważ nie jesteś jedyną osobą, z którą "pracuję".
To jest kod honoru hakera.

Od tej pory radzę korzystać z dobrych programów antywirusowych i aktualizować je regularnie (kilka razy dziennie)!

Nie bądź na mnie zły, każdy ma własną pracę.
Do widzenia

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically.

To remove this malware we recommend using Combo Cleaner Antivirus for Windows. If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

malicious process running on user's computer sample

If you checked the list of programs running on your computer, for example, using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

screenshot of autoruns application

manual malware removal step 2Restart your computer into Safe Mode:

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup.

Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button.

In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":


manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

extract autoruns.zip and run autoruns.exe

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Click 'Options' at the top and uncheck 'Hide Empty Locations' and 'Hide Windows Entries' options

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

locate the malware file you want to remove

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware name on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, be sure to remove it.

searching for malware file on your computer

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs.

These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software.

To be sure your computer is free of malware infections, we recommend scanning it with Combo Cleaner Antivirus for Windows.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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