Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects Sauron Loader stage-2 payload execution: a randomly-named file dropped in %TEMP% and executed within 5 minutes by a native launcher (rundll32/regsvr32/msiexec/cmd/powershell/wscript). Scoped to devices that already show the confirmed rnpkeys.exe side-load from ProgramData\keyroll, turning a very noisy fleet-wide 'temp file executed by native binary' heuristic (matches countless legitimate installers/updaters) into a targeted next-stage check on hosts with corroborated Sauron Loader activity. Also fixes an unused/dead variable and an ambiguous post-join column reference.
Detects the Sauron Loader DLL side-loading chain: rnpkeys.exe (legitimate) side-loading malicious rnp.dll, which loads tdwp.dll to decrypt the loader in memory, all staged from C:\ProgramData\keyroll. Requires BOTH DLLs to be loaded by the same rnpkeys.exe process instance (not either/or) to eliminate single-artifact false positives, and surfaces SHA256 hashes of all three components for direct comparison against known IOCs (legitimate rnpkeys.exe: 194d7e8870ff783ce1e4e4e3015c895cc67ae52fd5e063c89dd1c069400d3991; malicious rnp.dll: 5606afdc5191d42f38d3c4f1692eda0a629c88810e29bfe78528733284ad1bf8; malicious tdwp.dll: 6551293e996d19755ba497f50b30a18c178f0d6e2a73b29ae742b8171e2985b7).
Detects the Sauron Loader DLL side-loading chain: rnpkeys.exe (legitimate) side-loading malicious rnp.dll, which loads tdwp.dll to decrypt the loader in memory, all staged from C:\ProgramData\keyroll. Requires BOTH DLLs to be loaded by the same rnpkeys.exe process instance (not either/or) to eliminate single-artifact false positives, and surfaces SHA256 hashes of all three components for direct comparison against known IOCs (legitimate rnpkeys.exe: 194d7e8870ff783ce1e4e4e3015c895cc67ae52fd5e063c89dd1c069400d3991; malicious rnp.dll: 5606afdc5191d42f38d3c4f1692eda0a629c88810e29bfe78528733284ad1bf8; malicious tdwp.dll: 6551293e996d19755ba497f50b30a18c178f0d6e2a73b29ae742b8171e2985b7).
ChainScript file manager 'files' task: node.exe performing high-volume recursive deletion within masqueraded ChainScript installation paths (drive enumeration, dir listing, file read/write, recursive delete)
This rule detects potential screen capture activity performed by either a suspicious executable (SearchTrustedRuntimeSvc.exe) that mimics a screen capture tool or a PowerShell script invoked by Node.js using .NET drawing libraries. This behavior is indicative of unauthorized information gathering, common in remote access trojans (RATs).
Detects the presence of an XMRig cryptocurrency miner masquerading as the systemd-logind process. The rule identifies processes named 'systemd-logind' that either reside in an incorrect file path ('/usr/sbin/systemd-logind') or utilize command-line arguments characteristic of XMRig mining activity. This behavior is associated with the CARBONATO botnet.
Detects the presence of an XMRig cryptocurrency miner masquerading as the systemd-logind process. The rule identifies processes named 'systemd-logind' that either reside in an incorrect file path ('/usr/sbin/systemd-logind') or utilize command-line arguments characteristic of XMRig mining activity. This behavior is associated with the CARBONATO botnet.
Detects the presence of an XMRig cryptocurrency miner masquerading as the systemd-logind process. The rule identifies processes named 'systemd-logind' that either reside in an incorrect file path ('/usr/sbin/systemd-logind') or utilize command-line arguments characteristic of XMRig mining activity. This behavior is associated with the CARBONATO botnet.
Detects executable files launched from torrent-related directories or parent processes that perform reconnaissance commands or registry queries indicative of sandbox or virtualization detection, a technique observed in the MovieReaper malware loader.
TokenGrabber Builder: Webhook XOR/Base64 Obfuscation Artifacts - detects webhook.txt persistence, XOR 0x5A + Base64 webhook obfuscation, WEBHOOK_PLACEHOLDER injection, and the _x() decode routine used to recover the exfiltration endpoint
Detects a sequence of activity where a process queries Windows Registry keys related to installed Python versions, followed shortly by the invocation of Python-to-executable compilation tools like Nuitka or PyInstaller. This pattern is indicative of an adversary or developer performing interpreter discovery before compiling a payload into a standalone executable.
Detects mshta.exe spawning suspicious child processes (cmd.exe, powershell.exe, or reg.exe) that are characteristic of the ReverseRAT backdoor. The rule identifies common discovery commands or persistence attempts via Registry Run keys triggered from mshta.exe.
Detects the execution of mshta.exe by explorer.exe with command line arguments containing script protocols (javascript:, vbscript:) or remote URLs. This is a common technique used by attackers to execute malicious HTA files or inline scripts, bypassing security controls.
Detects the execution of mshta.exe by explorer.exe with command line arguments containing script protocols (javascript:, vbscript:) or remote URLs. This is a common technique used by attackers to execute malicious HTA files or inline scripts, bypassing security controls.
Detects HTTP connections between internal hosts and suspected C2 infrastructure associated with the Operation SilkParasite campaign. The rule specifically monitors for connections to known malicious IPs and identifies the retrieval of a cloned RTX Corporation homepage content, which acts as a decoy for the SpiceRAT malware.
Detects the use of PowerShell to load .NET assemblies into memory using System.Reflection.Assembly::Load combined with indicators often associated with fileless payload execution, such as GZip decompression, AES decryption, or method invocation (EntryPoint.Invoke, GetType).
Detects the execution of PowerShell commands that utilize .NET cryptography classes (AesManaged) in conjunction with data compression (GZipStream) and base64 decoding (FromBase64String). This combination of classes is highly characteristic of malicious scripts designed to decrypt and execute obfuscated or packed payloads in memory.
Detects command-line activity indicating an attempt to bypass or tamper with Anti-Malware Scan Interface (AMSI) functionality. The rule flags processes invoking GetProcAddress or LoadLibrary to resolve and manipulate AMSI-specific functions like AmsiScanBuffer or AmsiScanString within amsi.dll, a common technique for disabling runtime script scanning.
Detects execution chains associated with the SideCopy threat group's ReverseRAT payload. The detection looks for mshta.exe being spawned by common shell processes (explorer, wscript, cmd, powershell) to execute remote HTA content or access 'docsportal.in'. It also monitors for subsequent reflective DLL loading via rundll32.exe or regsvr32.exe, which is indicative of the final ReverseRAT payload activation.
Detects execution chains associated with the SideCopy threat group's ReverseRAT payload. The detection looks for mshta.exe being spawned by common shell processes (explorer, wscript, cmd, powershell) to execute remote HTA content or access 'docsportal.in'. It also monitors for subsequent reflective DLL loading via rundll32.exe or regsvr32.exe, which is indicative of the final ReverseRAT payload activation.
Detects anomalous sign-in patterns indicative of real-time MFA relay attacks, where a user principal authenticates successfully from multiple distinct IP addresses and geographical locations within a short time window (15 minutes), suggesting the active interception of credentials and MFA challenges by a Phishing-as-a-Service platform.
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