Was my Dropbox account hacked?
If you think your Dropbox account may have been hacked, check to see if any of the following apply to you: Click on the unfamiliar file and click Version history on the right to find out who added the file.
How secure is Dropbox?
Documents like the Dropbox security whitepaper outline how Dropbox Business protects its users’ devices, but there isn’t an equivalent for the security of personal files. Dropbox has been around for almost 13 years and has more than 600 million users.
Are there any problems with Dropbox?
During this time, there hasn’t been a shortage of problems. Hackers caused some of these, but they all show the issue is with how this cloud service deals with user data. The first mistake was in 2011, when an error in an update allowed anyone to access any Dropbox account with only the email address.
What happened to Dropbox encryption keys?
The 2012 leak was due to an employee’s compromised Dropbox account, and in 2014 there was criticism around employees having access to encryption keys. However, there was no policy change here, and your files can still be decrypted and viewed at any time.
How to remove DropboxAES RAT?
What is DropboxAES RAT?
How does DropboxAES work?
What is a valid authorization token?
Does DropboxAES use AES?
About this website
Can you be hacked from a Dropbox?
If Dropbox doesn't take serious action towards security, they could be hacked once again. A notorious Dropbox hack was the result of an employee using their company password on other websites. There are two important takeaways from this. One is that Dropbox remains a popular target for cyber attacks.
What is a Dropbox hacking?
About the Dropbox hack Hackers had used usernames and passwords from another data breach to sign-in to Dropbox accounts. One of these accounts belonged to a Dropbox employee, who had used the same password for both the breached site and for their Dropbox account.
Has Dropbox been hacked 2021?
Dropbox was quick to fire back that no breach had happened on its servers. Instead, according to a Dropbox blog post, “Your stuff is safe. The usernames and passwords…were stolen from unrelated services, not Dropbox.
Why is Dropbox not secure?
Dropbox doesn't provide for client-side encryption. Dropbox also doesn't support the creation of your own private keys. However, Dropbox users are free to add their own encryption. There are many third party applications that provide encryption at both the file and container level.
What is Dropbox used for?
If you install the Dropbox app on your iOS or Android device, you can access and work on files from your phone or tablet and share them with others. If you don't have your device with you, you can still log into Dropbox from any device with an internet browser and access your files.
When was Dropbox hacked?
2012The 2012 leak was due to an employee's compromised Dropbox account, and in 2014 there was criticism around employees having access to encryption keys. However, there was no policy change here, and your files can still be decrypted and viewed at any time.
Can Dropbox view your files?
Dropbox employees may access, but not view the contents of, files in your Dropbox account when assisting Dropbox in complying with a legal obligation, such as responding to a search warrant.
How does a Dropbox work?
Dropbox is designed to be an invisible app. It gives you a folder on your computer that automatically backs up and syncs your files across all your devices—and also keeps them in the cloud so you can access them from any computer, anywhere in the world.
Clear links to other Turla malware
ESET researchers were able to link Crutch to the Russian Turla advanced persistent threat (APT) group based on similarities with the second-stage Gazer (aka WhiteBear) backdoor the threat actors used between 2016 and 2017.
Dropbox abused as storage for stolen data
Turla delivered Crutch as a second stage backdoor on already compromised machines using first-stage implants like Skipper during 2017, months after the initial compromise in some cases, and the open-source PowerShell Empire post-exploitation framework
Unorthodox espionage group
In total, throughout their espionage campaigns, Turla has compromised thousands of systems belonging to governments, embassies, as well as education and research facilities from more than 100 countries.
How to remotely wipe Dropbox?
We also recommend that you: 1 Reset your password with something unique, and never give it out to anyone 2 Dropbox users on certain plans have the ability to remote wipe their Dropbox files from their devices. If you’re not on one of those plans, you can still remotely sign out of your devices. 3 Turn on two-step verification, which adds an extra layer of security to your account
Can Dropbox admin sign in as user?
If you're a member of a Dropbox Business team, your admin may have signed in to your account using the Sign in as user feature. They have the ability to do any of the following:
How to secure Dropbox?
To secure Dropbox and get the privacy this service doesn’t already offer, you should look at third-party encryption software. These protect your files before you use cloud storage, and the keys are held on your devices so you know everything is safe.
Why Does Dropbox Keep Having Security Problems?
If the files needed to first be decrypted by your device, the whole process would slow down. To get around this, Dropbox holds on to your encryption key so they can look at your files whenever they want.
Why did Dropbox leak in 2012?
The 2012 leak was due to an employee’s compromised Dropbox account, and in 2014 there was criticism around employees having access to encryption keys. However, there was no policy change here, and your files can still be decrypted and viewed at any time.
How long has Dropbox been around?
Dropbox has been around for almost 13 years and has more than 600 million users. During this time, there hasn’t been a shortage of problems. Hackers caused some of these, but they all show the issue is with how this cloud service deals with user data.
Why did Dropbox reappear?
Supposedly this was caused by an error that didn’t remove some files, and when fixing it, a mistake led to these files being sent back to users. This means that some data from six years ago was never deleted and was vulnerable to a leak.
When was the first mistake in Dropbox?
The first mistake was in 2011, when an error in an update allowed anyone to access any Dropbox account with only the email address. There was a fix within four hours, but the update shouldn’t have gone live without proper testing.
Is Dropbox safe to use?
With basic protections, such as two-step verification, your information isn’t open to every prying eye. As long as you make sure your Dropbox account is using these systems and you use a randomly generated, secure password, most people shouldn’t have any serious problems with Dropbox.
Updated Variants
Researchers don’t think Crutch is a first-stage backdoor; instead, it is deployed after the attackers already had initially compromised a victim network.
Turla Attribution
ESET connected Crutch to the Turla APT due to what researchers called “strong links” between a Crutch dropper from 2016 and a second-stage backdoor used by Turla from 2016 to 2017 (called Gazer, also known as WhiteBear ).
How to report suspicious items on Dropbox?
Report any suspicious items that appear to be from Dropbox by sending an email to abuse@dropbox.com
What to do if you receive a suspicious email?
If you received a suspicious email, forward the complete message to abuse@dropbox.com
What to do if you don't trust a link in an email?
If you don’t trust a link in an email, go directly to the normal login or home page for a service (for example, typing www.dropbox.com instead of clicking on a link) If you’re not sure who an email is from, don’t click anything in the message.
Does Dropbox have official websites?
Official Dropbox websites and emails will only appear on or come from any of our verified Dropbox domains (such as dropbox.com or dropboxmail.com).
Does Dropbox require a passcode?
If you use the Dropbox mobile app on your smartphone or tablet, set a passcode that will be required every time the app is launched
FlowCloud targeted attacks
The FlowCloud campaigns pushed the RAT payload using PE attachments between July and September 2019, and switched to Microsoft Word documents with malicious macros in November 2019.
LookBack and FlowCloud infrastructure overlaps
Proofpoint says that there is an obvious overlap with another malware with a RAT module named LookBack that was also used in similar spear-phishing campaigns targeting U.S. utility providers.
What is Bandook malware?
Bandook malware is a remote access trojan (RAT) first seen in 2007 and active for several years.
How many commands does Bandook use?
In this wave, Bandook used a custom version of the malware with only 11 supported commands:
What is the point of Bandook Malspam?
An interesting point about Bandook malspam documents is after a certain amount of time, criminals change the malicious external template to benign to bypass defenses and deliver the best possible scenario.
How to remove DropboxAES RAT?
Remove all traces of DropboxAES RAT from the compromised system, including deleting the ‘online’ check-in file present on the C2 server, removing all persistence mechanisms (registry Run key and Windows Service), performing a shallow deletion of DropboxAES RAT executables via the del.cmd batch script, and terminating the currently running DropboxAES RAT executable
What is DropboxAES RAT?
DropboxAES RAT hashes the current executable’s path and filename (lines 15 and 16) and returns a two-byte hexadecimal value. The hexadecimal value is converted to a lowercase string and is used as the mutex name in the CreateMutexA call (line 18).
How does DropboxAES work?
DropboxAES RAT sets up its working environment by first creating a subfolder within %AllUsersProfile% using the name “Service” specified in its configuration (see Figure 4) . The malware sets the Hidden and System attributes, copies the original executable (asOELnch.exe) and DLL (MSVCR100.dll), and creates a file named Service.ini in this subfolder. The Service.ini file contains a single integer, which is specified at the beginning of the DropboxAES RAT configuration (e.g., 0x3E8 hex = 1000 decimal). CTU researchers believe this value may be a campaign identifier.
What is a valid authorization token?
A valid Authorization token value allows DropboxAES RAT to view, download, upload, and delete files located in Dropbox folders owned by the threat actor.
Does DropboxAES use AES?
Despite BRONZE VINEWOOD naming the malware DropboxAES RAT, the version analyzed by CTU researchers does not use the Advanced Encryption Standard ( AES ). Rather, it implements a ChaCha20 stream cipher to encode and decode data. Older versions of the malware may have leveraged AES encryption when encrypting data.
