Aaron Beardslee
@abeardsleeTrusted contributorCompletionist
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28 detections
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Detects exploitation attempts of CVE-2025-42944, a critical insecure deserialization vulnerability in SAP NetWeaver AS Java RMI-P4 module. This rule identifies when SAP Java processes spawn system shells or execute suspicious commands, which is indicative of successful exploitation of the deserialization flaw. Attackers can exploit this vulnerability by sending malicious serialized Java objects to exposed RMI-P4 ports (typically 50004 or 50014), leading to arbitrary OS command execution with full system privileges. This pattern detects the post-exploitation behavior where the compromised Java process spawns interactive shells, creates scheduled tasks, or executes system commands.
Detects processes opening a handle to the device symbolic link '\\.\HtAntiCheatDriver'. This is the static interface for the vulnerable GameDriverX64.sys driver (CVE-2025-61155) used by the Interlock ransomware group in Bring Your Own Vulnerable Driver (BYOVD) attacks to disable security software.
Detects processes opening a handle to the device symbolic link '\\.\HtAntiCheatDriver'. This is the static interface for the vulnerable GameDriverX64.sys driver (CVE-2025-61155) used by the Interlock ransomware group in Bring Your Own Vulnerable Driver (BYOVD) attacks to disable security software.
Detects the creation or start of a Windows service with a name pattern 'UpdateCheckerX64_{random-numbers}'. This is a characteristic behavior of the 'Hotta Killer' tool used by the Interlock ransomware group to load a vulnerable driver (CVE-2025-61155) for disabling security products.
Detects the execution of 'polers.dll' via rundll32.exe, a command-line pattern used by the Interlock ransomware group's 'Hotta Killer' tool to terminate security software by exploiting CVE-2025-61155.
Detects PowerShell execution using Get-CimInstance to query Win32_ComputerSystem, Win32_BIOS, Win32_BaseBoard, or other WMI classes commonly checked by malware to detect virtual machine or sandbox environments. This technique is frequently used by malware families to evade analysis in virtualized security research environments.
Detects PowerShell scripts that query the system's total physical memory and compare it against common low-resource thresholds (e.g., < 4GB). This is a known sandbox evasion technique used by malware to identify and avoid analysis environments, which are often configured with limited RAM.
Detects exploitation attempts targeting a code injection vulnerability in XWiki's SolrSearch macro (CVE-2025-24893). Attackers can inject malicious Groovy code through specially crafted requests to the SolrSearch endpoint, leading to unauthenticated remote code execution.
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