Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects potential session replay or cookie theft attacks against Google Workspace accounts. The rule identifies anomalous session activity where a single session ID is associated with multiple country codes within a short timeframe (less than 60 minutes), suggesting that a stolen session token is being used by an adversary in a different location than the legitimate user.
Detects modifications to Windows LSA and LanmanServer registry keys (RestrictAnonymous, NullSessionPipes) in conjunction with ERAAgent.exe process execution, as well as ERAAgent creating named pipes accessible by anonymous logon, which may indicate configuration tampering to facilitate unauthorized access or credential collection.
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 rapid ICMP (ping) traffic directed towards specific internal and external hosts, characteristic of the RedTail Linux malware attempting to perform network discovery or validate connectivity to command-and-control infrastructure.
Detects RedTail malware samples: UPX-packed, statically linked ELF executables across multiple architectures (x86_64, ARM, ARM64, i686, RISC-V). Requires UPX packing signature to co-occur with RedTail-specific filename strings to reduce false positives on generic UPX-packed binaries.
Detects RedTail malware samples: UPX-packed, statically linked ELF executables across multiple architectures (x86_64, ARM, ARM64, i686, RISC-V). Requires UPX packing signature to co-occur with RedTail-specific filename strings to reduce false positives on generic UPX-packed binaries.
Detects attempts to access or create copies of the Active Directory 'ntds.dit' database or the Windows Security Account Manager (SAM) registry hive using unauthorized processes. Attackers often target these files to extract credential hashes from Domain Controllers or local systems.
Detects rapid, repeated execution of process control utilities (kill, strace, inotifywait, timeout) directed at monitored processes, often used by malware (such as 'redtail') to disable security monitoring, debugging, or auditing tools on Linux systems.
Detects rapid, repeated execution of process control utilities (kill, strace, inotifywait, timeout) directed at monitored processes, often used by malware (such as 'redtail') to disable security monitoring, debugging, or auditing tools on Linux systems.
Matches known RedTail malware payloads and staging scripts by exact SHA-256 hash equality
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