Query: alert when An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, Amm
Matching passage: Sigma rule: An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, Amm. Logsource: windows / dns_query. Rule: title: DNS Query To Remote Access Software Domain From Non-Browser App id: 4d07b1f4-cb00-4470-b9f8-b0191d48ff52 related: - id: 71ba22cb-8a01-42e2-a6dd-5bf9b547498f type: obsolete - id: 7c4cf8e0-1362-48b2-a512-b606d2065d7d type: obsolete - id: ed785237-70fa-46f3-83b6-d264d1dc6eb4 type: obsolete status: test description: 'An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks. These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment. Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land) ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-3---logmein-files-detected-test-on-windows - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-6---ammyy-admin-software-execution - https://redcanary.com/blog/misbehaving-rats/ - https://techcommunity.microsoft.com/t5/microsoft-sentinel-blog/hunting-for-omi-vulnerability-exploitation-with-azure-sentinel/ba-p/2764093 - https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-320a - https://blog.sekoia.io/scattered-spider-laying-new-eggs/ - https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist#disable-quick-assist-within-your-organization author: frack113, Connor Martin date: 2022-07-11 modified: 2024-12-17 tags: - attack.command-and-control - attack.t1219.002 logsource: product: windows category: dns_query detection: selection_generic: QueryName|endswith: - agent.jumpcloud.com - agentreporting.atera.com - ammyy.com - api.parsec.app - api.playanext.com - api.splashtop.com - app.atera.com - assist.zoho.com - authentication.logmeininc.com - beyondtrustcloud.com - cdn.kaseya.net - client.teamviewer.com - comserver.corporate.beanywhere.com - control.connectwise.com - downloads.zohocdn.com - dwservice.net - express.gotoassist.com - getgo.com - getscreen.me - integratedcha
Near-miss passage: Sigma rule: Detects the execution of powershell scripts with calls to the "Start-NetEventSession" cmdlet. Which allows an attacker t. Logsource: windows / ps_script. Rule: title: Potential Packet Capture Activity Via Start-NetEventSession - ScriptBlock id: da34e323-1e65-42db-83be-a6725ac2caa3 status: test description: 'Detects the execution of powershell scripts with calls to the "Start-NetEventSession" cmdlet. Which allows an attacker to start event and packet capture for a network event session. Adversaries may attempt to capture network to gather information over the course of an operation. Data captured via this technique may include user credentials, especially those sent over an insecure, unencrypted protocol. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/5f866ca4517e837c4ea576e7309d0891e78080a8/atomics/T1040/T1040.md#atomic-test-16---powershell-network-sniffing - https://github.com/0xsyr0/Awesome-Cybersecurity-Handbooks/blob/7b8935fe4c82cb64d61343de1a8b2e38dd968534/handbooks/10_post_exploitation.md - https://github.com/forgottentq/powershell/blob/9e616363d497143dc955c4fdce68e5c18d28a6cb/captureWindows-Endpoint.ps1#L13 author: frack113 date: 2024-05-12 tags: - attack.credential-access - attack.discovery - attack.t1040 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection: ScriptBlockText|contains: Start-NetEventSession condition: selection falsepositives: - Legitimate network diagnostic scripts. level: medium