Query: alert when Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and es
Matching passage: Sigma rule: Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and es. Logsource: aws / cloudtrail. Rule: title: AWS STS GetSessionToken Misuse id: b45ab1d2-712f-4f01-a751-df3826969807 status: test description: Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and escalate privileges. references: - https://github.com/elastic/detection-rules/pull/1213 - https://docs.aws.amazon.com/STS/latest/APIReference/API_GetSessionToken.html author: Austin Songer @austinsonger date: 2021-07-24 modified: 2022-10-09 tags: - attack.lateral-movement - attack.privilege-escalation - attack.t1548 - attack.t1550 - attack.t1550.001 logsource: product: aws service: cloudtrail detection: selection: eventSource: sts.amazonaws.com eventName: GetSessionToken userIdentity.type: IAMUser condition: selection falsepositives: - GetSessionToken may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. GetSessionToken from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule. level: low
Near-miss passage: Sigma rule: Detects potential DLL sideloading of vcruntime140.dll, a common C++ runtime library. Threat actors have been observed us. Logsource: windows / image_load. Rule: title: Potential Vcruntime140 DLL Sideloading id: d7a63acb-1284-49bc-bfea-7771146c8b1c status: experimental description: 'Detects potential DLL sideloading of vcruntime140.dll, a common C++ runtime library. Threat actors have been observed using DLL sideloading techniques to load malicious payloads under the guise of legitimate applications such as SqlWriter, SqlDumper etc. Notably, APT29 has been documented leveraging WinELOADER to sideload vcruntime140.dll for executing malicious code. ' references: - https://www.mandiant.com/resources/blog/apt29-wineloader-german-political-parties - https://www.zscaler.com/blogs/security-research/european-diplomats-targeted-spikedwine-wineloader - https://www.nextron-systems.com/2023/09/15/detecting-janelarat-with-yara-and-thor/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2026-01-12 modified: 2026-05-18 tags: - attack.persistence - attack.privilege-escalation - attack.execution - attack.stealth - attack.t1574.001 logsource: category: image_load product: windows detection: selection: ImageLoaded|endswith: \vcruntime140.dll filter_main_legitimate_path: ImageLoaded|startswith: - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Program Files\ - C:\Program Files (x86)\ filter_main_legitimate_signer: Signed: true SignatureStatus: Valid Description|endswith: C Runtime Library filter_optional_onedrive: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\OneDrive\ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/image_load/image_load_side_load_vcruntime140/info.yml