Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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This rule detects the LausivLoader initial-stage obfuscated JavaScript dropper. It identifies the malware either by specific file hashes (MD5/SHA256) or by detecting characteristic behaviors: small file size (<1MB), the presence of 'String.fromCharCode' obfuscation techniques, excessive junk comments, and supply-chain related lure strings.
This rule detects the creation or pushing of a local Git branch where the branch name matches the pattern of a 40-character SHA-1 or 64-character SHA-256 hash. This behavior is indicative of the Plugin4Shell exploitation technique, where attackers create branches named after specific commit SHAs to bypass security checks on self-hosted Git services like Bitbucket by pinning them to unintended commits.
This rule detects DNS queries for domains associated with the SilkParasite campaign, which leverages typosquatting to impersonate Central Asian government, energy, and telecommunications entities for potential malicious activity.
Detects a sequence of events where a host connects to 'speedtest.net' followed by a burst of outbound SYN packets to TCP port 37777. This pattern may indicate an adversary using legitimate web traffic to calibrate their scanning rate or bypass network controls before performing a targeted scan.
This rule detects multiple distinct methods of modifying, impairing, or disabling Microsoft Defender Antivirus exclusions and tamper protection settings. It identifies suspicious activity through PowerShell commands (Add-MpPreference, Set-MpPreference, Invoke-CimMethod, TamperProtection modification), direct registry modification of Defender exclusion paths, and the use of scheduled tasks to maintain or enforce these changes. The rule flags endpoints where two or more of these distinct techniques are observed in a 24-hour period.
This rule detects the execution of NetSupport Manager related files, specifically 'client32.exe', or the presence of 'NetSupport' or 'Manager.zip' in command lines. NetSupport is a legitimate remote administration tool that is frequently abused by adversaries to maintain persistence and remote control over compromised hosts.
This rule detects potentially malicious messages within Microsoft Teams that use common social engineering keywords related to security configuration changes (e.g., passkey, MFA, SSO). The detection specifically filters for users who have successfully logged in within the last 30 days to identify potential compromised accounts acting as internal senders.
Detects the execution of PowerShell or pwsh with encoded command arguments containing a long base64 string, often used by attackers to hide malicious scripts from command-line logging and basic static analysis.
Detects anomalous, high-volume file access or download activity in Microsoft SharePoint Online or OneDrive for Business originating from a 'python-httpx' user agent. This pattern often indicates automated data collection or exfiltration attempts using programmatic tools.
Detects the creation of a Windows service named 'ProcAuditManager', which is associated with the SparroWocky threat. The rule flags the service creation event (Event ID 7045) and identifies if the service description matches the known malicious signature, which attempts to masquerade as a legitimate auditing tool.
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