![]() ![]() Example command: certutil -addstore -f -user ROOT ProgramData\r. certutil may be used to Base64 encode collected data. Subvert Trust Controls: Install Root CertificateĬertutil can be used to install browser root certificates as a precursor to performing Adversary-in-the-Middle between connections to banking websites. Ĭertutil can be used to download files from a given URL. 1 2 Some data encoding systems may also result in data compression, such as gzip. Common data encoding schemes include ASCII, Unicode, hexadecimal, Base64, and MIME. ![]() Ĭertutil has been used to decode binaries hidden inside certificate files as Base64 information. Command and control (C2) information can be encoded using a standard data encoding system that adheres to existing protocol specifications. Uses Certutil decode to decode the file from base64 and output to a specified file type. ![]() Enterprise Layer download view Techniques Used DomainĪrchive Collected Data: Archive via UtilityĬertutil may be used to Base64 encode collected data. Atomic Test 1 - Deobfuscate/Decode Files Or Information Atomic Test 2 - Certutil Rename and Decode Atomic Test 3 - Base64 decoding with Python. Uses Certutil URL cache to download from C2 server. ![]()
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