Duo Tech
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2,481 detections
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Detects the execution of an AppleScript file via the osascript utility that initiates a network connection within a 5-minute window of execution. This behavior is often indicative of automated script-based network activity, such as command-and-control communication or data exfiltration.
Detects file creation, modification, or renaming events within sensitive macOS Application Support directories that mimic core system components such as Finder or Software Update. This behavior is indicative of potential masquerading or persistence techniques where an attacker replaces legitimate application resources with malicious ones.
Detects the Finder application on macOS loading authentication modules (libpam.dylib) from within the 'Application Support' directory. The rule further correlates this by checking if common system utility tools (dscl, security, osascript) were initiated by the same Finder process path, flagging cases where legitimate system activity is absent, which may indicate potential dylib hijacking or suspicious process behavior.
Detects access to sensitive browser internal pages (profile-internals) via command line or the generation of error PDF files, which may indicate browser-based reconnaissance, credential harvesting, or data exfiltration attempts.
Detects processes attempting to copy or access browser cookie files, indicated by strings associated with unauthorized data collection tools or custom scripts.
Detects execution of PowerShell commands that contain strings indicative of an in-memory AMSI (Antimalware Scan Interface) bypass. The rule searches for the combination of memory manipulation API calls (VirtualProtect, LoadLibrary, GetProcAddress) and specific byte signatures (0xB8, 0xC3) often used to patch AMSI in the current process memory.
Detects the creation of a scheduled task via schtasks.exe identified by the specific command-line string associated with 'CrysomeLoader', configured to execute every 5 minutes.
This rule detects processes accessing sensitive browser credential files ('passwords.json' or 'cookies.json') located in common browser profile output directories. Accessing these files is a common technique used by malware and adversaries to steal stored credentials from web browsers.
Detects execution of processes associated with the CrySome Remote Access Trojan (RAT), identified by known binary names ('patch_diag.exe', 'patch.exe') or file hash. Additionally, it monitors for outbound network connections to a specific, hardcoded C2 IP address (193.26.115.42) on port 5555, which is associated with CrySome RAT's hVNC-enabled client.
Detects high-integrity or system-level processes launched by specific shellcode-like filenames or processes containing 'ICMLuaUtil' in the command line. This technique is often indicative of a UAC bypass attempt, where malicious actors attempt to elevate privileges by abusing the ICMLuaUtil COM interface, while excluding the standard Windows consent dialog processes.
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