Query: detection rule: Detects the loading of unsigned .node files. Adversaries may abuse a lack of .node integrity checking to execute arbitra
Matching passage: Sigma rule: Detects the loading of unsigned .node files. Adversaries may abuse a lack of .node integrity checking to execute arbitra. Logsource: windows / image_load. Rule: title: Unsigned .node File Loaded id: e5f5c693-52d7-4de5-88ae-afbfbce85595 status: experimental description: 'Detects the loading of unsigned .node files. Adversaries may abuse a lack of .node integrity checking to execute arbitrary code inside of trusted applications such as Slack. .node files are native add-ons for Electron-based applications, which are commonly used for desktop applications like Slack, Discord, and Visual Studio Code. This technique has been observed in the DripLoader malware, which uses unsigned .node files to load malicious native code into Electron applications. ' references: - https://www.coreycburton.com/blog/driploader-case-study - https://github.com/CoreyCBurton/DripLoaderNG - https://www.electronjs.org/docs/latest/tutorial/native-code-and-electron author: Jonathan Beierle (@hullabrian) date: 2025-11-22 tags: - attack.execution - attack.privilege-escalation - attack.persistence - attack.stealth - attack.t1129 - attack.t1574.001 - attack.t1036.005 logsource: category: image_load product: windows detection: selection_node_extension: ImageLoaded|endswith: .node selection_status: - Signed: 'false' - SignatureStatus: Unavailable filter_optional_vscode_jupyter: Image|endswith: \Code.exe ImageLoaded|contains: .vscode\extensions\ms-toolsai.jupyter- ImageLoaded|endswith: - \electron.napi.node - \node.napi.glibc.node condition: all of selection_* and not 1 of filter_optional_* falsepositives: - VsCode extensions or similar legitimate tools might use unsigned .node files. These should be investigated on a case-by-case basis, and whitelisted if determined to be benign. level: medium
Near-miss passage: Sigma rule: Detects LOLBINs and applications that should not legitimately drop script files to disk. This may indicate malware stagi. Logsource: windows / file_event. Rule: title: Legitimate Application Dropped Script id: 7d604714-e071-49ff-8726-edeb95a70679 status: test description: 'Detects LOLBINs and applications that should not legitimately drop script files to disk. This may indicate malware staging or abuse of a trusted binary for script-based code execution. ' references: - https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326 - https://dmpdump.github.io/posts/TelegramRat/ - https://www.virustotal.com/gui/file/a0d5b30578acd1df9139e7a8a4bfc659dc2cf48f4dc0c5804b70890adeb9fa21/behavior author: frack113, Florian Roth (Nextron Systems) date: 2022-08-21 modified: 2026-05-11 tags: - attack.stealth - attack.t1218 logsource: product: windows category: file_event detection: selection: Image|endswith: - \eqnedt32.exe - \wordpad.exe - \wordview.exe - \certutil.exe - \certoc.exe - \CertReq.exe - \Desktopimgdownldr.exe - \esentutl.exe - \mshta.exe - \AcroRd32.exe - \RdrCEF.exe - \hh.exe - \finger.exe TargetFilename|endswith: - .bat - .chm - .csproj - .hta - .js - .jse - .proj - .ps1 - .py - .scf - .vbe - .vbs - .wsf - .wsh filter_main_mshta: Image|endswith: \mshta.exe TargetFilename|endswith: .hta condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/file/file_event/file_event_win_susp_legitimate_app_dropping_script/info.yml