Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the installation of specific known malicious NPM packages (indexed-btree, btree-core, mutex-forge) or execution of npm install commands targeting these packages, which are indicative of software supply chain compromise attempts.
Detects the use of the Windows certutil utility to decode Base64-encoded files into executable, library, or script formats. This technique is commonly used by adversaries to decode malicious payloads that were dropped on a system in an encoded form to bypass signature-based security controls.
Detects the on-disk presence of a malicious Firefox browser extension, 'pdf-para-texto@extensao.local', used for credential or data harvesting. The rule monitors for the creation of its manifest file or XPI package in specific directories, indicating the staging or installation of the malicious extension.
This rule detects the presence of the malicious 'pdf-para-texto@extensao.local' Firefox extension on disk. This extension is known to perform browser-based credential interception by patching the WebAuthn PublicKeyCredential interface at document_start on Google-related domains to facilitate account takeover.
Detects potential multimodal prompt injection attacks where an AI agent process ingests a file (PDF, image, etc.) from a browser or mail client and subsequently performs suspicious downstream activity, such as spawning a shell with execution primitives or making network connections to rare, non-reputable external domains. Covers T1204, T1059, T1105
Detects potential multimodal prompt injection attacks where an AI agent process ingests a file (PDF, image, etc.) from a browser or mail client and subsequently performs suspicious downstream activity, such as spawning a shell with execution primitives or making network connections to rare, non-reputable external domains. Covers T1204, T1059, T1105
Detects potential multimodal prompt injection attacks where an AI agent process ingests a file (PDF, image, etc.) from a browser or mail client and subsequently performs suspicious downstream activity, such as spawning a shell with execution primitives or making network connections to rare, non-reputable external domains. Covers T1204, T1059, T1105
Detects the execution of PowerShell with a bypass execution policy that performs a download or web request to save content to a file in the user's temp directory, followed by the immediate execution of that file. This pattern is characteristic of multi-stage malware droppers or fileless attack techniques attempting to stage and execute malicious scripts from temporary locations.
Detects the execution of PowerShell with a bypass execution policy that performs a download or web request to save content to a file in the user's temp directory, followed by the immediate execution of that file. This pattern is characteristic of multi-stage malware droppers or fileless attack techniques attempting to stage and execute malicious scripts from temporary locations.
Detects the WAV-based loader staging technique: a RIFF/WAVE file carrying a high-entropy appended blob, or a companion DLL chain (rdCore.dll/WMPCL.dll/WPFLocalizeExtension.dll) referencing the hidden audio payload and the encrypted monitor.raw container used to unpack the final RAT
Detects the WAV-based loader staging technique: a RIFF/WAVE file carrying a high-entropy appended blob, or a companion DLL chain (rdCore.dll/WMPCL.dll/WPFLocalizeExtension.dll) referencing the hidden audio payload and the encrypted monitor.raw container used to unpack the final RAT
Detects the WAV-based loader staging technique: a RIFF/WAVE file carrying a high-entropy appended blob, or a companion DLL chain (rdCore.dll/WMPCL.dll/WPFLocalizeExtension.dll) referencing the hidden audio payload and the encrypted monitor.raw container used to unpack the final RAT
Detects a file named dnsapi.dll created/modified outside System32/SysWOW64/WinSxS (the only legitimate locations for the real system DLL). Now requires the file to BOTH land in one of the known NeedyMantis sideload staging folders AND match the published 3448-byte spoofed-config size -- previously the size check alone could match unrelated dnsapi.dll copies anywhere on disk; requiring both signals together removes that bypass.
Detects a file named dnsapi.dll created/modified outside System32/SysWOW64/WinSxS (the only legitimate locations for the real system DLL). Now requires the file to BOTH land in one of the known NeedyMantis sideload staging folders AND match the published 3448-byte spoofed-config size -- previously the size check alone could match unrelated dnsapi.dll copies anywhere on disk; requiring both signals together removes that bypass.
Detects a file named dnsapi.dll created/modified outside System32/SysWOW64/WinSxS (the only legitimate locations for the real system DLL). Now requires the file to BOTH land in one of the known NeedyMantis sideload staging folders AND match the published 3448-byte spoofed-config size -- previously the size check alone could match unrelated dnsapi.dll copies anywhere on disk; requiring both signals together removes that bypass.
Detects >=2 of the four NeedyMantis archive-extraction artifacts (encryptbase64.ps1, dnsapi.dll, ws2_32.dll, msvcrt140.dll) written by the same process within 60 seconds. Anchored to the known sideload staging directories (ProgramData/ProgramFiles subfolders used by the Poedit/curl/Vim/TightVNC/Office/Broadcom/Intel/NVIDIA-masquerading bundles) and excludes System32/SysWOW64, since ws2_32.dll and dnsapi.dll are legitimate system DLL names that would otherwise cause noise if matched by name alone anywhere on disk.
Detects >=2 of the four NeedyMantis archive-extraction artifacts (encryptbase64.ps1, dnsapi.dll, ws2_32.dll, msvcrt140.dll) written by the same process within 60 seconds. Anchored to the known sideload staging directories (ProgramData/ProgramFiles subfolders used by the Poedit/curl/Vim/TightVNC/Office/Broadcom/Intel/NVIDIA-masquerading bundles) and excludes System32/SysWOW64, since ws2_32.dll and dnsapi.dll are legitimate system DLL names that would otherwise cause noise if matched by name alone anywhere on disk.
Detects >=2 of the four NeedyMantis archive-extraction artifacts (encryptbase64.ps1, dnsapi.dll, ws2_32.dll, msvcrt140.dll) written by the same process within 60 seconds. Anchored to the known sideload staging directories (ProgramData/ProgramFiles subfolders used by the Poedit/curl/Vim/TightVNC/Office/Broadcom/Intel/NVIDIA-masquerading bundles) and excludes System32/SysWOW64, since ws2_32.dll and dnsapi.dll are legitimate system DLL names that would otherwise cause noise if matched by name alone anywhere on disk.
Detects >=2 of the four NeedyMantis archive-extraction artifacts (encryptbase64.ps1, dnsapi.dll, ws2_32.dll, msvcrt140.dll) written by the same process within 60 seconds. Anchored to the known sideload staging directories (ProgramData/ProgramFiles subfolders used by the Poedit/curl/Vim/TightVNC/Office/Broadcom/Intel/NVIDIA-masquerading bundles) and excludes System32/SysWOW64, since ws2_32.dll and dnsapi.dll are legitimate system DLL names that would otherwise cause noise if matched by name alone anywhere on disk.
Detects Impacket-style hands-on-keyboard staging: a NeedyMantis bundle file dropped by cmd.exe/wmiprvse.exe/services.exe carrying the distinctive remote-execution fingerprint (ADMIN$ share reference, %COMSPEC% invocation, or 2>&1 output redirection used by wmiexec/smbexec/atexec), followed within 15 minutes by execution referencing the same bundle folder with the same fingerprint. Requiring the ADMIN$/%COMSPEC%/redirection fingerprint on both the copy and the execution -- rather than just matching on common process names like cmd.exe or svchost.exe -- removes the bulk of ordinary software installation and update activity that also uses cmd.exe to stage files.
Detects NeedyMantis-style DLL sideloading: a DLL is dropped at an anomalous ProgramData/ProgramFiles path mirroring known first-stage loader naming/path conventions (masquerading as Poedit, curl, Vim, TightVNC, Office, Broadcom, Intel, or NVIDIA components), AND that exact same DLL is subsequently loaded by a process within 10 minutes. Requiring the corroborating load event (rather than file presence alone) filters out benign drops such as installer staging, AV quarantine copies, or backup/sync tools that never execute the file.
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