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 Threats

No sooner was Cyberpunk 2077 released for Windows and consoles than we came across a “beta version for Android” online. It was completely free to download from a site bearing the name cyberpunk2077mobile[.]com. The game’s actual developer has yet to announce any mobile version of the game, so we   show more ...

decided to investigate. Cyberpunk 2077 for Android? No, it’s ransomware The website for the alleged mobile version looks nothing like Cyberpunk 2077‘s official site — it looks more like Google Play, in fact. Its creators claim the beta version was released on the same day as the official release, and (at the time of this post) had been downloaded about 1,000 times. Some users had even left feedback, saying it wasn’t bad for a beta version. Shades of Google Play Although the website lists the app’s size at 3.4GB, the file is less than 3MB. Did the developers also create some kind of futuristic compression technology on the side? Not likely. Moving along, on its initial run, the fake beta requests access to files on the device. In theory, an app might need some file access to save or open something, but no game needs your photos and videos just to load. Nevertheless, this app will not run without the permission. If a user grants that permission, however, they will see a ransom demand, not the game they wanted. Why does a game need access to your files? To encrypt them, of course! The message is in rather garbled English, and it informs the victim that all of their selfies and other important files are now encrypted. To recover them, the cybercriminals demand $500 in bitcoin within 24 hours. (Or 10 hours. The ransom note mentions both periods.) Anyway, the note continues, if the victim doesn’t deliver the money in time, the malware will permanently erase everything. According to the note, any attempt to remove the ransomware will be futile and result in the loss of the files. Are the encrypted files recoverable? We checked to see what really happens to the files on an infected device. The files are indeed encrypted and assigned the extension .coderCrypt. In addition, the malware places a README.txt file, containing the same ransom message, in each folder. The fake Cyberpunk 2077 for Android does encrypt files — its creators are honest about that part However, the files are recoverable. That’s because the malware uses the RC4 symmetric encryption algorithm. The symmetric part means the same key both encrypts and decrypts the files. In this case, the key was hard-coded into the app, and in all of the samples that we encountered, it was this: 21983453453435435738912738921. Because RC4 is quite common, it is possible to recover the files for yourself, for example, by using an online RC4 decryption service or contacting our user support team. What’s more, at least for the version of the malware we examined, the 10- (or 24-) hour deadline is completely irrelevant. The ransomware won’t delete anything after a time — its code contains no such function. That said, saving a copy of the encrypted files before attempting to restore them is worth your time, just in case the recovery utility fails. Cyberpunk 2077 ransomware: Windows version Regrettably, files encrypted by ransomware are not always easy to recover. For example, the authors of the fake beta Cyberpunk 2077 for Android are also distributing ransomware for Windows disguised as the same game. In that case, however, the key is not hard-coded into the app, but randomly generated for each infection case, so victims have no easy way to decrypt affected files. The ransom note for Windows users demands $1,000 in bitcoin for decryption Should you pay up? At the time of this writing, more than $8,000 in bitcoin had been transferred to the cybercriminals’ wallet. Meanwhile, file recovery is in no way guaranteed. The ransomware creators might simply disappear with the money or, finding victims willing to pay, demand more. Therefore, we strongly advise against paying the ransom. Kaspersky experts help ransomware victims by studying malicious code and inventing ways to decrypt files — in other words, we write free decryptors. You can find many of them on the NoMoreRansom website, created specially to counter such attacks, or on our support website. If you do get hit by ransomware, make those resources your first port of call. Even if no decryptor exists for your particular problem yet, it is possible, even likely, that one will appear in due course with a corresponding utility. How to stay safe from ransomware The best tip, obviously, is to avoid ransomware in the first place — even ransomware temptingly disguised as a popular game. To protect yourself, observing basic digital hygiene may suffice. Download apps only from official stores or from the developer’s official website. Scan for news of beta versions, releases, and promotions on the developer’s website. If the developer has no information, or the game is not officially out yet, anything else is fake. Use a reliable security solution on all devices to catch malware before it can do any harm. For example, our products nail the fake–Cyberpunk 2077 ransomware for Android with the verdict HEUR:Trojan-Ransom.AndroidOS.Agent.bs, and the version for Windows as Trojan-Ransom.Win32.Alien.ao. Back up important files so you can recover them promptly in case of damage or loss.

 Malware and Vulnerabilities

Multiple security researchers note the return of an email campaign attempting to spread the malware, which is often used to drop the Ryuk ransomware and Trickbot banking Trojan.

 Trends, Reports, Analysis

Of those who were offered training, 82% claimed that it was a short briefing rather than something more comprehensive. Less than a fifth (17%) said they had regular training sessions.

 Threat Actors

Joker’s Stash, a popular carding site where cybercriminals trade their payment-card wares, has suffered a blow after law enforcement apparently seized one of its domains.

 Threat Actors

While tracking the Lazarus group’s campaigns targeting various industries, Kaspersky found that they recently went after COVID-19-related entities, including a pharma firm and a government ministry.

 Breaches and Incidents

The Jefferson County Property Valuation Administrator's office has been hit by a ransomware attack, in which hackers are holding the agency's data hostage, PVA Colleen Younger said in an interview.

 Feed

CVE-2020-0986, which was exploited in the wild, was not fixed. The vulnerability still exists, just the exploitation method had to change. A low integrity process can send LPC messages to splwow64.exe (Medium integrity) and gain a write-what-where primitive in splwow64’s memory space. The attacker controls the destination, the contents that are copied, and the number of bytes copied through a memcpy call.

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Asterisk Project Security Advisory - A crash can occur in Asterisk when a SIP message is received that has a History-Info header, which contains a tel-uri. Note, the remote client must be authenticated, or Asterisk must be configured for anonymous calling in order for this problem to manifest.

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The US Federal Bureau of Investigation (FBI) and Interpol have allegedly seized proxy servers used in connection with Blockchain-based domains belonging to Joker's Stash, a notorious fraud bazaar known for selling compromised payment card data in underground forums. The takedown happened last week on December 17. The operators of Joker's Stash operate several versions of the platform, including 

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The US Cybersecurity Infrastructure and Security Agency (CISA) has warned of critical vulnerabilities in a low-level TCP/IP software library developed by Treck that, if weaponized, could allow remote attackers to run arbitrary commands and mount denial-of-service (DoS) attacks. The four flaws affect Treck TCP/IP stack version 6.0.1.67 and earlier and were reported to the company by Intel. Two of

 Feed

As if the exponential rise in phishing scams and malware attacks in the last five years wasn't enough, the COVID-19 crisis has worsened it further. The current scenario has given a viable opportunity to cybercriminals to find a way to target individuals, small and large enterprises, government corporations. According to Interpol's COVID-19 Cybercrime Analysis Report, based on the feedback of 194

2020-12
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