Attention: We have transitioned to a new AAD or Microsoft Entra ID from the week of May 20, 2024. In case your tenant requires admin consent, please refer to this document located at Overview of user and admin consent - Microsoft Entra ID | Microsoft Learn and grant access to App ID: 6ba09155-cb24-475b-b24f-b4e28fc74365 with graph permissions for Directory.Read.All and User.Read for continued access. While the app may appear unverified, you can confirm its legitimacy by verifying the App ID provided.
This threat installs web browser plugins that can be used for a number of malicious activities on your PC. This can include stealing your sensitive information, Bitcoin mining, and sending spam emails.
It is installed by other malware in the Win32/Tofsee family.
This threat is usually installed by variants of the Win32/Tofsee malware family. It is downloaded along with configuration data received from Tofsee command and control servers.
The encrypted plugins are saved along with other configuration information in the following files:
In subkey: HKCU\SOFTWARE\Microsoft\DeviceControl Sets value: "DevData" With data: "<encrypted binary data>", for example "<FB 7F 38 A5 8E CC BB 5D AB 47 E1 7D 16 B3 4D E9 ...>"
When the threat is run it extracts and decrypts the configuration data and loads the plugins to memory.
Payload
Installs malicious plugins
This threat can install malicious plugins onto your PC. We have seen the following plugins being installed:
plg_antibot - Sha1: 1bbd298614c3ef5510bab6067cd7016e3b717259 - Used to terminate processes
plg_ddos - Sha1: 46a39d4561908d38a85e173730954fd3aeaed400 - Can perform DDOS attacks
plg_locs - Sha1: 50ce6332121b0a49961e6360b61ada2d29b8a0c7 - Steals your email credentials
plg_miner - Sha1: a1290ad41bf644a34b2fc6638298b41984936b5c - A digital coin miner
plg_protect - Sha1: b4f47b9b6d8900be6912085f78cfebc0f005edb4 - Protects the malware from being uninstalled
plg_proxy - Sha1: 70c81ed3a0c1793ed6a22c77e984ecd35664d8ba - Acts as proxy server
plg_smpt - Sha1: 5da345e23b2e9d78af8ed897a07e2e9c4f77714c - Send spam emails using Outlook
plg_sniff - Sha1: 11516f319e84473179ee3cdfc488c9e807cf006a - Can sniff traffic
plg_spread - Sha1: 6ccd64b905e044aabc0bbea9a0c26859d9da154a - Sends malicious messages on Facebook, Twitter, and Skype
plg_spread2 - Sha1: e5ecbb89acbc62fcecf5c5d7481483f940b35cc3 - Spreads the malware via removable drives
plg_sys - Sha1: 05e8e23575645a8af681125b202a90826d3b4c96 - Collect system information
plg_text - Sha1: e0cacdeb3a81fd5e98991220d021254b1c3e2616 - Logging for malware activity
plg_webb - Sha1: 279844d36e20ab94142b51ed5dba5be6ed879562 - Steal cookies
plg_webm - Sha1: 60a3d0988fce2ec9f663f77398e38c2271bbb8f2 - Sends spam email using web mail clients
