Arnold Chan
@slazTrusted contributorCompletionist
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This rule detects the creation or modification of a file named 'ClipBoard.txt' within the directory 'AppData\Roaming\ConfigsEx\', as well as the creation of the 'ConfigsEx' directory using command-line tools. This behavior is indicative of an adversary staging sensitive information, such as harvested clipboard data, for potential exfiltration.
This rule detects the creation or modification of a file named 'ClipBoard.txt' within the directory 'AppData\Roaming\ConfigsEx\', as well as the creation of the 'ConfigsEx' directory using command-line tools. This behavior is indicative of an adversary staging sensitive information, such as harvested clipboard data, for potential exfiltration.
Detects unauthorized file operations (creation, modification, or renaming) against the Windows hosts file located at C:\Windows\System32\drivers\etc\hosts. This is a common technique used by attackers to redirect network traffic, hijack domains, or disrupt communications to security services. The rule excludes common system processes known to perform legitimate maintenance on this file.
Detects unauthorized file operations (creation, modification, or renaming) against the Windows hosts file located at C:\Windows\System32\drivers\etc\hosts. This is a common technique used by attackers to redirect network traffic, hijack domains, or disrupt communications to security services. The rule excludes common system processes known to perform legitimate maintenance on this file.
Detects unauthorized file operations (creation, modification, or renaming) against the Windows hosts file located at C:\Windows\System32\drivers\etc\hosts. This is a common technique used by attackers to redirect network traffic, hijack domains, or disrupt communications to security services. The rule excludes common system processes known to perform legitimate maintenance on this file.
Detects potential remote service session hijacking by monitoring for RDP session ID reuse by a different user or unauthorized SSH session reattachment (e.g., tmux/screen hijacking). It correlates logon events with process execution to identify instances where an existing session is accessed by an account other than the original owner, while excluding legitimate service/support account activity.
Detects unauthorized file operations (creation, modification, or renaming) against the Windows hosts file located at C:\Windows\System32\drivers\etc\hosts. This is a common technique used by attackers to redirect network traffic, hijack domains, or disrupt communications to security services. The rule excludes common system processes known to perform legitimate maintenance on this file.
Detects instances where browser processes or related credential files are accessed or targeted by process termination (e.g., taskkill.exe) followed by attempts to access sensitive files like Login Data, logins.json, or key4.db. This pattern is indicative of credential theft from web browsers.
Detects instances where browser processes or related credential files are accessed or targeted by process termination (e.g., taskkill.exe) followed by attempts to access sensitive files like Login Data, logins.json, or key4.db. This pattern is indicative of credential theft from web browsers.
Detects anomalous remote interactive or network logons where the specific account and remote host/IP combination has not been observed in the previous 14 days. The rule correlates these new login events with subsequent process execution on the destination host within a short window (5 minutes) to identify potential lateral movement where an adversary uses valid credentials to log in and immediately execute commands.
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