Check Point researchers recently spotted a flaw in one of Android’s security mechanisms. This flaw exposes Android users to several types of attacks, including ransomware, banking malware and adware.
Check Point researchers say they have spotted a flaw in one of Android’s security mechanisms. Based on Google’s policy which grants extensive permissions to apps installed directly from Google Play, this flaw exposes Android users to several types of attacks, including ransomware, banking malware and adware. Check Point reported this flaw to Google, which responded that this issue is already being dealt with in the upcoming version of Android, currently dubbed “Android O”.
In Android version 6.0.0, dubbed “Marshmallow”, Google introduced a new permission model for apps. The new model consists of several groups of permissions, with permissions considered as “dangerous” granted only during runtime. This means that during the first time an app tries to access a “dangerous” resource, the user is required to approve the necessary permission.
In addition to the “dangerous” permissions, another category exists, which contains a single permission – SYSTEM_ALERT_WINDOW. Unlike the other permissions, to grant it, the user must go through several menus (Settings -> Apps -> Draw over other apps) and manually allow an app to use it.
The reason SYSTEM_ALERT_WINDOW is unique is the extensive capability it withholds, by enabling an app to display over any other app without notifying the user. This entails a significant potential for several malicious techniques, such as displaying fraudulent ads, phishing scams, click-jacking, and overlay windows, which are common with banking Trojans. It can also be used by ransomware to create a persistent on-top screen that will prevent non-technical users from accessing their devices. According to our findings, 74% of ransomware, 57% of adware, and 14% of banker malware abuse this permission as part of their operation. This is clearly not a minor threat, but an actual tactic used in the wild.
Since Google understood the problematic nature of this permission, and the apparent risks for user privacy it created the distinct process mentioned above to approve it. However, this soon caused problems, as this permission is also used by legitimate apps, such as Facebook, which requires it for its Messenger chat heads feature. Since most users won’t be able to approve the permission manually, such apps could be hurt by it.
As a temporary solution, Google applied a patch in Android version 6.0.1 that allows the Play Store app to grant run-time permissions, which are later used to grant SYSTEM_ALERT_WINDOW permission to apps installed from the app store. This means that a malicious app downloaded directly from the app store will be automatically granted this dangerous permission.
Based on Check Point research, nearly 45% of the applications using the SYSTEM_ALERT_WINDOW permission are apps from Google Play. With the granting of SYSTEM_ALERT_WINDOW permission to apps installed from the app store, Google effectively bypasses the security mechanism introduced in the previous version. Google relies heavily on “Bouncer”, which scans apps uploaded to Google Play, to keep harmful apps out of it. Unfortunately, malicious apps successfully infiltrate Google Play time after time. FalseGuide and Skinner discovered on Google Play are two recent examples.
Google is working on a fix
After Check Point reported this flaw, Google responded it has already set plans to protect users against this threat in the upcoming version “Android O”. This will be done by creating a new restrictive permission called TYPE_APPLICATION_OVERLAY, which blocks windows from being positioned above any critical system windows, allowing users to access settings and block an app from displaying alert windows.
How to stay protected in the meantime?
· Beware of fishy apps
Users should always beware of malicious apps, even when downloading from Google Play. Look for the comments left by other users, and grant only permissions which have relevant context for the app’s purpose.
· Implement advanced security measures
Just as you protect your PC with dedicated security solutions, you should also make sure to protect your mobile device using a protective solution capable of identifying and blocking known and unknown malware.
Data journalism takes top prize in revamped awards
The entries to the 2018 Vodacom Journalist of the Year Awards were extraordinarily varied and of an excellent standard, with new categories introduced which are based on content as opposed to platforms. This year, the judges decided that two entries were equally worthy of the coveted Vodacom Journalist of the Year Award.
The first co-winning entry, in the new Data Journalism category, is a set of stories by Alastair Otter and Laura Grant of Media Hack which showed how Data Journalism is shaping the future. The second co-winning entrant is Bongani Fuzile of the Daily Dispatch for his articles in the investigative category on how migrant workers were being ripped off by pension deductions (full citations below).
Convenor of the judging panel Ryland Fisher says: “This year we modernised the 12 categories that journalists could enter their work in and the change was embraced by entrants. In a turbulent time for media, the 2018 entries once again proved that there are excellent South African journalists delivering praiseworthy work, and we commend them for finding new and innovative ways to cover the news.”
Takalani Netshitenzhe, Chief Officer for Corporate Affairs at the Vodacom Group, says: “Vodacom is proud of its 17-year association with these prestigious awards, which make an important contribution to our society through the recognition of journalistic excellence. I’d like to congratulate all of tonight’s winners and, as always, I’d like to pay tribute to our hardworking judges. Ryland Fisher, Mathatha Tsedu, Arthur Goldstuck, Collin Nxumalo, Elna Rossouw, Patricia McCracken, Megan Rusi, Mary Papayya, Albe Grobbelaar and Obed Zilwa: thank you for making these awards a continued success.”
Veteran journalist and media stalwart Ms Amina Frense is the winner of the 2018 Vodacom Journalist of the Year Lifetime Achiever Award. She has spent decades in mainstream media both locally and internationally. She is a former Managing Editor: News and Current Affairs at the SA Broadcasting Corporation. She has worked in many countries abroad as a producer and a foreign correspondent, has written two books and is also a founding member of SANEF where she still serves as a council member (full citation below).
The overall winners share the R100 000 main prize. National winners in the various categories are as follows, with each winner taking home R10 000:
The entries in this category were of an exceptionally high standard. One entrant stood out and became the unanimous winner. This journalist showed an exceptional skill for story-telling and for finding unexpected angles and unknown facts. For his stories about Musangwe’s fight for recognition, Age cheating in SA football, and Hansie Cronje revisited, the winner is Ronald Masinda, and the team of Gift Kganyago, Nceba Ntlanganiso and Charles Lombard from eSAT TV.
Cons exploit Telegram ICO
Kaspersky Lab researchers have uncovered dozens of highly convincing fake websites claiming to be investment sites for an initial coin offering (ICO) by the Telegram messaging service. Many of these websites appear to belong to the same group. In one case alone, tens of thousands of US dollars’ worth of cryptocurrency were stolen from victims believing they were investing in ‘Grams’, Telegram’s rumoured new currency. Telegram has not officially confirmed an ICO and has warned people about fraudulent investor sites.
In late 2017, stories started to circulate that the Telegram messaging service was launching an initial coin offering (ICO) to finance a blockchain platform based on its TON (Telegram Open Network) technology. Unverified technical documentation was posted online, but there appears to have been no confirmation from Telegram itself. The resulting confusion seems to have allowed fraudsters to capitalise on investor interest by creating fake sites and stealing vast sums of money.
Kaspersky Lab researchers have discovered dozens of such sites, possibly belonging to the same group, claiming to sell tokens for ‘Grams’ and inviting investors to pay with cryptocurrencies including Bitcoin, Ethereum, lice litecoin, dash and Bitcoin dash. A record of transactions on one site revealed that the scammers were able to steal at least $35,000 US dollars’ worth of Ethereum from investors.
The researchers found that some of the websites were so convincing that even after Telegram and others began to issue warnings, they were still able to recruit potential investors. Most use a secure connection, require registration and generate a unique online wallet for each new victim, making it harder to track the money.
Judging by the content of the fake websites, it appears they may have common ownership. For example, several have the exactly the same ‘Our Team’ section.
“ICOs are a fairly risky investment and many people don’t yet fully understand how they work, so it is not surprising that high quality fake websites, with seemingly reassuring features such as a secure connection and registration are successful at luring people in. People wishing to invest in an ICO would do well to check with the company behind it and make sure they know exactly who they are giving their money to, or they may never see it again,” said Nadezhda Demidova, Lead Web-Content Analyst, Kaspersky Lab.
Kaspersky Lab offers the following advice for users considering investing in an ICO:
- Check for warning signs: for example, some of the fake Telegram ICO websites had the same wrong image next to the name of Telegram’s Chief Product Officer.
- Do your homework: always check with the brand’s official site to verify the legitimacy of the investment site and, if necessary contact the company’s ICO teams before investing any money or currency.
- Use reliable security solutions such as Kaspersky Internet Security and Kaspersky Internet Security for Android, which will warn you if you try to visit fake internet pages.