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1. Stockfolio mac app download serial number#
2. Stockfolio mac app download archive#
3. Stockfolio mac app download download#

The first one contains a pair of shell scripts and connects to a remote site to decrypt its encrypted codes while the second sample, despite using a simpler routine involving a single shell script, actually incorporates a persistence mechanism. We found the first sample (detected as ) while checking suspicious shell scripts that were flagged by our machine learning system. At first glance, it was challenging to directly identify its malicious behavior because the shell script references other files such as AppCode. The suspicious shell script which was flagged by our system To verify that the behavior was indeed malicious, we sourced the parent file using both our infrastructure and the aggregate website VirusTotal (which had the sample but lacked detections from other major security vendors at the time of writing).įigure 1.

Stockfolio mac app download archive#

The initial sample we analyzed was a zip archive file (detected as ) that contained an app bundle ( Stockfoli.app) and a hidden encrypted file (.app). The fake app presents itself as legitimate to trick users, but we found that it contained several malicious components.įigure 2.

Note that the app bundle is missing the “o” at the end, whereas the legitimate app is called Stockfolio. The first suspicious component we found was an app bundle under the Resources directory, which seems to be a copy of the legitimate Stockfolio version 1.4.13 but with the malware author’s digital certificate.Ĭomparing it to the Resources directory of the current version (1.5) found on the Stockfolio website revealed a number of differences, as shown in the figure below.įigure 3. Comparison of the app bundle folder structure between the malware variant (top) and the legitimate app (version 1.5, bottom). When the app is executed, an actual trading app interface will appear on-screen. Interface displayed when the malware app bundle is executed However, unbeknownst to the user, the malware variant is already performing its malicious routines in the background.įigure 4. The plugin shell script collects the following information from the infected system: The main Mach-O executable will launch the following bundled shell scripts in the Resources directory: It then encodes the collected information using base64 encoding and saves the collected information in a hidden file: /tmp/.info.

Stockfolio mac app download serial number#

It then uploads the file to hxxps:///panel/uploadphp using the collected username and machine serial number as identifiers.

Stockfolio mac app download download#

If a successful response is sent from the URL, it will write the response in another hidden file ~/Library/Containers/.pass #STOCKFOLIO MAC DOWNLOAD SERIAL NUMBER#

The stock shell script will copy Stockfoli.app/Contents/Resources/appcode to /private/var/tmp/appcode. app file, executes it, then drops the following: #STOCKFOLIO MAC DOWNLOAD ZIP#Īpp file, which is the hidden file in the zip bundle that comes with Stockfoli.app app file then check if the file ~/Library/Containers/.pass exists. Using the contents of the ‘.pass’ file as the key, the malware variant will decrypt /private/var/tmp/appcode, which is encrypted using AES-256-CBC. It then saves the decrypted file to /tmp/appcode.