Query: detect Detects requests to exclude files, folders or processes from Antivirus scanning using PowerShell cmdlets in logs
Matching passage: Sigma rule: Detects requests to exclude files, folders or processes from Antivirus scanning using PowerShell cmdlets. Logsource: windows / process_creation. Rule: title: Powershell Defender Exclusion id: 17769c90-230e-488b-a463-e05c08e9d48f related: - id: c1344fa2-323b-4d2e-9176-84b4d4821c88 type: similar status: test description: Detects requests to exclude files, folders or processes from Antivirus scanning using PowerShell cmdlets references: - https://learn.microsoft.com/en-us/defender-endpoint/configure-process-opened-file-exclusions-microsoft-defender-antivirus - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md - https://twitter.com/AdamTheAnalyst/status/1483497517119590403 author: Florian Roth (Nextron Systems) date: 2021-04-29 modified: 2022-05-12 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection1: CommandLine|contains: - 'Add-MpPreference ' - 'Set-MpPreference ' selection2: CommandLine|contains: - ' -ExclusionPath ' - ' -ExclusionExtension ' - ' -ExclusionProcess ' - ' -ExclusionIpAddress ' condition: all of selection* falsepositives: - Possible Admin Activity - Other Cmdlets that may use the same parameters level: medium
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