Query: write Sigma for Detects Visual Studio Code tunnel execution. Attackers can abuse this functionality to establish a C2 channel
Matching passage: Sigma rule: Detects Visual Studio Code tunnel execution. Attackers can abuse this functionality to establish a C2 channel. Logsource: windows / process_creation. Rule: title: Visual Studio Code Tunnel Execution id: 90d6bd71-dffb-4989-8d86-a827fedd6624 status: test description: Detects Visual Studio Code tunnel execution. Attackers can abuse this functionality to establish a C2 channel references: - https://ipfyx.fr/post/visual-studio-code-tunnel/ - https://badoption.eu/blog/2023/01/31/code_c2.html - https://code.visualstudio.com/docs/remote/tunnels author: Nasreddine Bencherchali (Nextron Systems), citron_ninja date: 2023-10-25 modified: 2025-10-29 tags: - attack.command-and-control - attack.t1071.001 - attack.t1219 logsource: category: process_creation product: windows detection: selection_only_tunnel: OriginalFileName: null CommandLine|endswith: .exe tunnel selection_tunnel_args: CommandLine|contains|all: - .exe tunnel - --accept-server-license-terms selection_parent_tunnel: ParentCommandLine|endswith: ' tunnel' Image|endswith: \cmd.exe CommandLine|contains|all: - '/d /c ' - \servers\Stable- - code-server.cmd condition: 1 of selection_* falsepositives: - Legitimate use of Visual Studio Code tunnel level: medium
Near-miss passage: Sigma rule: Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware. Logsource: windows / image_load. Rule: title: Load Of RstrtMgr.DLL By An Uncommon Process id: 3669afd2-9891-4534-a626-e5cf03810a61 related: - id: b48492dc-c5ef-4572-8dff-32bc241c15c8 type: derived status: test description: 'Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware campaigns to kill processes that would prevent file encryption by locking them (e.g. Conti ransomware, Cactus ransomware). It has also recently been seen used by the BiBi wiper for Windows. It could also be used for anti-analysis purposes by shut downing specific processes. ' references: - https://www.crowdstrike.com/blog/windows-restart-manager-part-1/ - https://www.crowdstrike.com/blog/windows-restart-manager-part-2/ - https://web.archive.org/web/20231221193106/https://www.swascan.com/cactus-ransomware-malware-analysis/ - https://taiwan.postsen.com/business/88601/Hamas-hackers-use-data-destruction-software-BiBi-which-consumes-a-lot-of-processor-resources-to-wipe-Windows-computer-data--iThome.html author: Luc Génaux date: 2023-11-28 modified: 2026-07-28 tags: - attack.impact - attack.defense-impairment - attack.t1486 - attack.t1685 logsource: category: image_load product: windows detection: selection: - ImageLoaded|endswith: \RstrtMgr.dll - OriginalFileName: RstrtMgr.dll filter_main_generic: Image|startswith: - C:\$WINDOWS.~BT\ - C:\$WinREAgent\ - C:\Program Files (x86)\ - C:\Program Files\ - C:\ProgramData\ - C:\Windows\explorer.exe - C:\Windows\SoftwareDistribution\ - C:\Windows\SysNative\ - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Windows\WinSxS\ - C:\WUDownloadCache\ filter_main_user_software_installations: Image|startswith: C:\Users\ Image|contains|all: - \AppData\Local\Temp\is- - .tmp\ Image|endswith: .tmp filter_main_admin_software_installations: Image|startswith: C:\Windows\Temp\ filter_optional_onedrive_1: Image|startswith: C:\Users\ Image|endswith: - \AppData\Local\Microsoft\OneDrive\OneDrive.exe - \AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe filter_optional_onedrive_2: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\OneDrive\ Image|endswith: \OneDrive.Sync.Service.exe condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Other legitimate Windows processes not currently listed - Processes related to software installation level: low