Arnold Chan
@slazTrusted contributorCompletionist
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7,544 detections
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Detects the ESET Remote Administrator (ERAAgent.exe) process loading the 'dpapisvc.dll' module. This behavior is indicative of potential DLL side-loading where an attacker places a malicious DLL with the same name as a legitimate system library in the agent's directory to achieve code execution.
Detects behavior where the ERAAgent process writes a file to disk and executes that same file shortly after (within 5 minutes). This pattern is consistent with staged payload delivery, decompression, or assembly often observed in malicious activity, specifically referencing SLEEPWALKER malware patterns.
This rule detects potentially malicious memory manipulation and thread execution activity originating from the ERAAgent.exe process. It specifically identifies when ERAAgent.exe calls VirtualProtect or VirtualAlloc to set memory as PAGE_EXECUTE_READWRITE, followed shortly by a CreateThread or CreateRemoteThread operation. This behavior is indicative of process injection or reflective code loading, where an executable image is manually mapped into memory and executed, bypassing traditional file-based detection.
Detects the ESET Management Agent (ERAAgent.exe) initiating outbound network connections using non-standard socket families, specifically AF_VSOCK (virtual socket) or VMCI (Virtual Machine Communication Interface). These interfaces are typically used for inter-process communication between a host and a guest virtual machine, or between guest virtual machines, and may indicate malicious activity such as lateral movement from a virtualized environment, virtual machine escape attempts, or unauthorized communication within an ESXi host environment.
Detects ERAAgent.exe performing suspicious dynamic API resolution for functions commonly used by the SLEEPWALKER malware (VirtualProtect, SetSecurityDescriptorDacl, and CryptGenRandom). By resolving these functions at runtime via GetProcAddress rather than including them in the static import table, the malware attempts to evade detection and analysis.
Detects ERAAgent.exe (ESET Remote Administrator Agent) interacting with suspicious named pipes (e.g., mojo, spoolss) and attempts to extract credentials from command line parameters, indicating potential credential dumping or lateral movement techniques using the agent process.
Detects a suspicious pattern associated with the SLEEPWALKER technique, involving multiple memory write operations followed by a memory protection change within an ERAAgent.exe process. This behavior suggests code injection or dynamic code loading within a process.
This rule detects suspicious file system activity (creation, modification, or renaming) performed by the ESET Remote Administrator (ERA) Agent process, excluding files within standard ESET installation and ProgramData directories. This behavior may indicate an adversary attempting to leverage the legitimate ERA agent to perform unauthorized file operations or masquerading as the agent.
Detects instances where processes other than the primary web browsers (Chrome, Brave, Firefox) create, rename, or modify sensitive browser data files like 'Cookies' or 'Login Data'. This behavior is indicative of credential theft or data exfiltration attempts where an adversary is accessing browser-stored information.
Detects instances where the NW.js (Node-Webkit) framework binaries (nw.exe, node.exe) spawn common command-line interpreters or script-hosting utilities (e.g., cmd.exe, powershell.exe, wscript.exe) while executing associated application files like main.js or nw.pak. This behavior is indicative of potential exploitation of a browser-based application to gain shell access or execute arbitrary code on the host system.
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