Query: rule covering Detects LOLBINs and applications that should not legitimately drop script files to disk. This may indicate malware stagi
Matching 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
Near-miss passage: Sigma rule: Identifies when suspicious SAML activity has occurred in AWS. An adversary could gain backdoor access via SAML.. Logsource: aws / cloudtrail. Rule: title: AWS Suspicious SAML Activity id: f43f5d2f-3f2a-4cc8-b1af-81fde7dbaf0e status: test description: Identifies when suspicious SAML activity has occurred in AWS. An adversary could gain backdoor access via SAML. references: - https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateSAMLProvider.html - https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithSAML.html author: Austin Songer date: 2021-09-22 modified: 2022-12-18 tags: - attack.initial-access - attack.lateral-movement - attack.persistence - attack.privilege-escalation - attack.stealth - attack.t1078 - attack.t1548 - attack.t1550 - attack.t1550.001 logsource: product: aws service: cloudtrail detection: selection_sts: eventSource: sts.amazonaws.com eventName: AssumeRoleWithSAML selection_iam: eventSource: iam.amazonaws.com eventName: UpdateSAMLProvider condition: 1 of selection_* falsepositives: - Automated processes that uses Terraform may lead to false positives. - SAML Provider could be updated by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. - SAML Provider being updated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule. level: medium