Ibrahim Saud
@tektrixIndiaCompletionist
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Detects the execution of taskkill.exe to terminate known security software processes, when the command is initiated from sqlservr.exe or via a command shell child process of sqlservr.exe. This activity is a common post-exploitation step after abusing xp_cmdshell to neutralize defenses before deploying further payloads.
Detects the execution of the encryptbase64.ps1 PowerShell script when invoked by a process other than PowerShell or PowerShell Core. This behavior is indicative of NeedyMantis malware attempting to evade detection by executing scripts outside standard script hosts.
Detects network activity associated with the RatHat Android malware, specifically tracking device registration, log uploads to '/api/node/', and subsequent WebSocket protocol upgrades used for command-and-control communications.
Detects HTTP traffic associated with the NeedyMantis malware, specifically identifying initial beacons to a known C2 domain using a specific User-Agent, followed by command-and-control response headers that suggest the exfiltration of reconnaissance data via the Set-Cookie field.
Detects specific malicious archive payloads associated with NeedyMantis that contain a second-stage loader and spoofed system DLLs (e.g., dnsapi.dll, ws2_32.dll, msvcrt140.dll). These archives utilize XOR encoding or RtlDecompressBuffer packing and are designed for DLL sideloading.
This rule identifies potential prompt injection attempts against Microsoft Copilot and Azure OpenAI services by monitoring CloudAppEvents for specific adversarial markers, encoded instruction blocks, or hidden text patterns. It flags recurring attempts from a single user as suspicious probing activity.
Detects the execution of 'sqlcmd.exe' when spawned by web application pools (w3wp.exe) or general command shell (cmd.exe) processes that do not appear to be related to authorized database administration or IIS appcmd activity.
Detects the use of 'findstr' or PowerShell to query sensitive configuration files (such as web.config or applicationHost.config) for credential-related keywords like 'connectionString', 'AccountKey', or 'machineKey'. This behavior is indicative of an adversary attempting to harvest credentials or sensitive configuration data stored in cleartext on the filesystem.
Detects the Microsoft IIS worker process (w3wp.exe) spawning common command-line shells (cmd.exe or powershell.exe) and executing discovery-related commands. This is highly indicative of potential web shell activity where an adversary uses an existing web application vulnerability to gain remote code execution.
Detects the presence of known SHA256 hashes associated with the 'ccrtc' planter PowerShell scripts and C2 SDK JavaScript components. These files were identified as being dropped into 'C:\Windows\Temp' during the STAC4924 webshell intrusion campaign.
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