Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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This rule detects a behavioral chain characteristic of the KongTuke/LandUpdate808 threat actor group. It identifies the correlation between a browser initiating a network connection to a domain with a low-reputation top-level domain (TLD) and that same browser process launching 'explorer.exe' within a 60-second window. This behavior is associated with social engineering lures (fake CAPTCHA) that encourage users to execute clipboard commands, which trigger file-picker dialogs via explorer.exe to facilitate follow-on malicious activity.
FileFix JavaScript silently writes the malicious command to the clipboard the instant the lure button is clicked, producing a much shorter human-reaction interval between browser launch and shell spawn than a manually typed path would allow.
This rule detects incoming email messages containing .zip attachments with filenames that mimic financial documents (e.g., NFe, DANFE, invoice-related keywords) combined with numerical strings. This naming pattern is commonly associated with phishing campaigns attempting to deliver malicious archives.
This rule detects a correlation between a successful user login from an IP address not previously seen for that specific user in the last 14 days, followed immediately (within 1 hour) by sensitive administrative operations performed by the same user, such as adding members to roles or modifying application permissions.
Detects reconnaissance and lateral movement activity via kubectl. The rule monitors for the enumeration of Kubernetes secrets or configmaps, and the deployment or application of privileged workloads featuring flags such as hostPath mounts, privileged execution, hostNetwork, or hostPID.
Detects the use of the WinGet 'configure' command to process PowerShell DSC configuration files. This method can be abused to execute arbitrary PowerShell code within a Script resource without explicitly invoking powershell.exe, potentially bypassing certain monitoring or security controls focused solely on the PowerShell executable.
Detects access or interrogation of the WinGet configuration history database (config.db) by non-standard or user-supplied Python scripts, which may indicate an attempt to enumerate installed package configurations or extract sensitive information from the local configuration state.
Detects instances where cmd.exe spawns a PowerShell process with the '-executionpolicy bypass' argument. This pattern is commonly used by attackers to execute malicious scripts while circumventing Windows PowerShell execution policy restrictions.
Detects the download and subsequent extraction of the Python embeddable zip package to directories under 'C:\Users\Public'. This activity is consistent with techniques used by threat actors, such as APT37, to establish a covert Python runtime environment on a compromised host for further malicious operations.
Detects the execution of cmd.exe spawned by explorer.exe that contains suspicious command line parameters. The rule specifically targets the use of obfuscated Windows batch substring expansion (e.g., %VAR:~0,1%) or commands being executed directly from common user-writable directories like Temp or Downloads, which are common indicators of malicious LNK file abuse.
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