Ursnif steals system information and attempts to steal banking and online account credentials.
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Upon execution, Ursnif checks for the presence of any virtual or debugging environments; if found, it will show a fake alert message box with the text, "Error Initializing Client App!". It also performs process hollowing on svchost.exe or explorer.exe and injects a dll file (client.dll) based on the system enviornment (whether it is 32- or 64-bit).
Afterwards, it tries to steal multiple pieces of information from the system and store them in a file. It then connects to a malicious command and control (C&C) server.
Ursnif is typically encountered when the user inadvertently opens a malicious file attachment that arrives via a spam email message.
Adds the following registry key to run at startup:
It connects to the following server:
Where encrypted_data contains the Username, Compute Name, Version of Injected process, System IP address and malware specific configuration details.
The malware also has the capability to:
Analysis on file: b3764e1a3d0f7d164436d565226800f3c06a58ec
Analysis by: Neeraj Singh