Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects the execution of PowerShell commands using '[scriptblock]::Create' in conjunction with character array decoding or large negative integer-array patterns. This technique is commonly used to deobfuscate and execute obfuscated PowerShell scripts at runtime.
This rule detects potentially malicious traffic patterns associated with 'ClickFix' phishing campaigns, specifically those leveraging a combination of Google Ads redirects through ChatGPT Custom GPT URLs and malicious landing pages hosted on Google Sites that contain 'antibot' identifiers.
Detects the execution of msiexec.exe with flags indicating a silent installation (/passive) where the package source is a remote URL (http:// or https://). This behavior is commonly associated with ClickFix campaigns and other malware delivery methods that attempt to trick users into installing malicious Windows Installer packages.
Detects execution of msiexec.exe via the Windows Run dialog (launched by explorer.exe) that utilizes a remote URL for an MSI installer alongside suspicious property flags ('ORG_NOTE', 'passive'). This pattern is associated with 'ClickFix' social engineering campaigns where users are instructed to copy-paste commands to 'fix' a display issue, leading to the execution of malicious installers.
Detects a suspicious PowerShell execution chain originating from explorer.exe, typically associated with ClickFix social engineering campaigns. The command uses 'Invoke-RestMethod' (irm) to download content, saves it to the user's TEMP directory, and immediately executes the downloaded script.
This rule detects a single host performing a high volume of connection attempts to internal IP addresses across standard management and file-sharing ports (SMB 445, RDP 3389, WinRM 5985) within a 5-minute window. Such behavior is characteristic of network scanning or reconnaissance activities performed by adversaries attempting to identify targets for lateral movement.
Detects persistence mechanisms used by The Gentlemen ransomware, specifically the creation of malicious scheduled tasks (UpdateUser, UpdateSystem, or gentlemen_system) and modification of registry Run keys (GupdateS or GupdateU). The rule also monitors for the presence of the operator password string 'G7Vz9eyG' within command line arguments.
Detects attempts by malicious software to inhibit system recovery by deleting Volume Shadow Copies. The rule monitors for the execution of vssadmin.exe with deletion flags or wmic.exe with shadowcopy deletion commands combined with non-interactive flags, which are common indicators of ransomware preparation.
Detects reconnaissance and persistence behaviors associated with the Akira ransomware attack chain, specifically the execution of the Cloudflare Tunnel daemon for remote access or the creation/modification of local user accounts via standard Windows tools.
Detects the execution of PowerShell from web browser parent processes (chrome, edge, firefox, iexplore) using obfuscation techniques (hidden window, encoded command, no profile) combined with an indicator of WebDAV access (DavWWWRoot), which is commonly used to execute payloads from remote network shares.
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