Query: detect Detects potential DLL sideloading of vcruntime140.dll, a common C++ runtime library. Threat actors have been observed us in logs
Matching 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
Near-miss passage: Sigma rule: Detects external IP address lookups by non-browser processes via services such as "api.ipify.org". This could be indicat. Logsource: windows / network_connection. Rule: title: Suspicious Network Connection to IP Lookup Service APIs id: edf3485d-dac4-4d50-90e4-b0e5813f7e60 related: - id: ec82e2a5-81ea-4211-a1f8-37a0286df2c2 type: derived status: test description: Detects external IP address lookups by non-browser processes via services such as "api.ipify.org". This could be indicative of potential post compromise internet test activity. references: - https://github.com/rsp/scripts/blob/c8bb272d68164a9836e4f273d8f924927f39b8c6/externalip-benchmark.md - https://www.cisa.gov/news-events/cybersecurity-advisories/aa20-302a - https://thedfirreport.com/2022/11/28/emotet-strikes-again-lnk-file-leads-to-domain-wide-ransomware/ - https://www.trendmicro.com/en_us/research/23/e/managed-xdr-investigation-of-ducktail-in-trend-micro-vision-one.html author: Janantha Marasinghe, Nasreddine Bencherchali (Nextron Systems) date: 2023-04-24 modified: 2024-03-22 tags: - attack.discovery - attack.t1016 logsource: category: network_connection product: windows detection: selection: - DestinationHostname: - www.ip.cn - l2.io - DestinationHostname|contains: - api.2ip.ua - api.bigdatacloud.net - api.ipify.org - bot.whatismyipaddress.com - canireachthe.net - checkip.amazonaws.com - checkip.dyndns.org - curlmyip.com - db-ip.com - edns.ip-api.com - eth0.me - freegeoip.app - geoipy.com - getip.pro - icanhazip.com - ident.me - ifconfig.io - ifconfig.me - ip-api.com - ip.360.cn - ip.anysrc.net - ip.taobao.com - ip.tyk.nu - ipaddressworld.com - ipapi.co - ipconfig.io - ipecho.net - ipinfo.io - ipip.net - ipof.in - ipv4.icanhazip.com - ipv4bot.whatismyipaddress.com - ipv6-test.com - ipwho.is - jsonip.com - myexternalip.com - seeip.org - wgetip.com - whatismyip.akamai.com - whois.pconline.com.cn - wtfismyip.com filter_optional_brave: Image|endswith: \brave.exe filter_optional_chrome: Image: - C:\Program Files\Google\Chrome\Application\chrome.exe - C:\Program Files (x86)\Google\Chrome\Application\chrome.exe filter_optional_firefox: Image: - C:\Program Files\Mozilla Firefox\firefox.exe - C:\Program Files (x86)\Mozilla Firefox\firefox.exe filter_optional_ie: Image: - C:\Program Files (x86)\Internet Explorer\iexplore.exe - C:\Program Files\Internet Explorer\iexplore.exe filter_optional_maxthon: Image|endswith: \maxthon.exe filter_optional_edge_1: - Image|startswith: C:\Program Files (x86)\Microsoft\EdgeWebView\Application\ - Image|endswith: \WindowsApps\MicrosoftEdge.exe - Image: - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe - C:\Program Files\Mi