Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,458 downloads7,116 copies47 likes38,527 views
11,679 detections
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Detects the silent installation or execution of Remote Monitoring and Management (RMM) tools when launched by script hosts (wscript.exe, mshta.exe, powershell.exe) which themselves were spawned by browser processes or explorer.exe. This pattern is characteristic of social engineering delivery chains, such as 'ClickFix', where a user is tricked into executing a script that subsequently fetches and runs RMM payloads for persistent remote access.
Detects behavior indicative of the MLTBackdoor malware, specifically the creation or modification of a DLL file (such as *dlp.dll) shortly after or before the creation of an RC4-encrypted 'data.bin' file on the same host. The rule also looks for an optional preceding archive extraction event of common file types from Temp or Downloads directories by standard extraction utilities, which may indicate the staging of the initial payload.
Detects the execution of 'filemanager.exe' and its subsequent access to sensitive browser credential stores (e.g., 'Login Data', 'cookies.sqlite'), occurring within a short window following a PowerShell-based ClickFix-style attack chain. The rule correlates initial suspicious script execution (often involving hidden windows, obfuscated commands, or web requests) with follow-on credential harvesting behavior on the same host.
Detects mshta.exe initiating outbound network connections, followed closely by the execution of a powershell.exe process with an unusually large command line, or PowerShell script block events containing large, potentially obfuscated scripts. This behavior is indicative of 'DeepLoad' or 'ClickFix' style staging, where legitimate binaries are leveraged to download and execute heavily obfuscated payloads.
Detects potential credential theft or malicious browser extension installation (DeepLoad-style) by monitoring for browser extension manifest file drops or registry-based extension force-installs occurring shortly after suspicious PowerShell command execution (ClickFix-style) on the same device.
Detects a sequence of activity where an endpoint performs multiple anti-analysis or sandbox evasion checks (using commands like wmic, powershell, or reg to query system information or look for debugger/VM artifacts) followed within 10 minutes by an outbound network connection to a domain that has not been observed from that specific device in the last 7 days.
Detects potential supply chain attacks where a common external script (e.g., a widget) is loaded across multiple unrelated domains, followed by correlation with suspicious user-executed commands indicative of 'ClickFix' tactics (copying and pasting malicious code from a browser-based overlay into the Windows Run dialog).
Detects a potential ClickFix delivery attack where a user navigates to an automotive-themed website, interacts with the system via the Windows Run dialog (RunMRU), and subsequently executes command-line interpreters (powershell, cmd, wscript, mshta) spawned by explorer.exe within a short time window.
Detects the execution of PowerShell with suspicious command-line arguments and obfuscation techniques commonly used by attackers to execute malicious code, including base64 encoded commands, bypass of execution policies, dynamic assembly loading, and caret-based obfuscation.
This rule detects potentially suspicious activity within a Git repository environment, specifically monitoring for code pushes, administrative changes (such as added collaborators, permission changes, or ownership transfers), and force push operations. It identifies high-impact repository modifications that could indicate unauthorized access, persistence, or attempts to disrupt repository integrity.
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