![]() ![]() Īstaroth loads its module with the XSL script parameter vShow set to zero, which opens the application with a hidden window. Īstaroth exfiltrates collected information from its r1.log file to the external C2 server. ĭynamic Resolution: Domain Generation AlgorithmsĪstaroth has used a DGA in C2 communications. Īstaroth uses a fromCharCode() deobfuscation method to avoid explicitly writing execution commands and to hide its code. Īstaroth collects data in a plaintext file named r1.log before exfiltration. ![]() Īstaroth encodes data using Base64 before sending it to the C2 server. Īstaroth uses an external software known as NetPass to recover passwords. Ĭommand and Scripting Interpreter: JavaScriptĪstaroth uses JavaScript to perform its core functionalities. Ĭommand and Scripting Interpreter: Visual BasicĪstaroth has used malicious VBS e-mail attachments for execution. Ĭommand and Scripting Interpreter: Windows Command ShellĪstaroth spawns a CMD process to execute commands. Īstaroth collects information from the clipboard by using the OpenClipboard() and GetClipboardData() libraries. īoot or Logon Autostart Execution: Shortcut ModificationĪstaroth's initial payload is a malicious. Enterprise Layer download view Techniques Used Domainīoot or Logon Autostart Execution: Registry Run Keys / Startup FolderĪstaroth creates a startup item for persistence. ![]()
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