Query: detect Detects the presence of the "u202+E" character, which causes a terminal, browser, or operating system to render text in in logs
Matching passage: Sigma rule: Detects the presence of the "u202+E" character, which causes a terminal, browser, or operating system to render text in. Logsource: windows / process_creation. Rule: title: Potential Defense Evasion Via Right-to-Left Override id: ad691d92-15f2-4181-9aa4-723c74f9ddc3 related: - id: e0552b19-5a83-4222-b141-b36184bb8d79 type: derived - id: 584bca0f-3608-4402-80fd-4075ff6072e3 type: derived status: test description: 'Detects the presence of the "u202+E" character, which causes a terminal, browser, or operating system to render text in a right-to-left sequence. This character is used as an obfuscation and masquerading techniques by adversaries to trick users into opening malicious files. ' references: - https://redcanary.com/blog/right-to-left-override/ - https://www.malwarebytes.com/blog/news/2014/01/the-rtlo-method - https://unicode-explorer.com/c/202E - https://tria.ge/241015-l98snsyeje/behavioral2 - https://unprotect.it/technique/right-to-left-override-rlo-extension-spoofing/ author: Micah Babinski, @micahbabinski, Swachchhanda Shrawan Poudel (Nextron Systems), Luc Génaux date: 2023-02-15 modified: 2026-03-20 tags: - attack.stealth - attack.t1036.002 logsource: category: process_creation product: windows detection: selection: CommandLine|contains: - \u202e - '[U+202E]' - ‮ condition: selection falsepositives: - Commandlines that contains scriptures such as arabic or hebrew might make use of this character level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_susp_right_to_left_override/info.yml
Near-miss passage: Sigma rule: Detects execution of devcon.exe with commands that disable the VMware Virtual Machine Communication Interface (VMCI) dev. Logsource: windows / process_creation. Rule: title: Devcon Execution Disabling VMware VMCI Device id: 85f520e7-6f5e-43ca-874c-222e5bf9c0de status: experimental description: 'Detects execution of devcon.exe with commands that disable the VMware Virtual Machine Communication Interface (VMCI) device. This can be legitimate during VMware Tools troubleshooting or driver conflicts, but may also indicate malware attempting to hijack communication with the hardware via the VMCI device. This has been used to facilitate VMware ESXi vulnerability exploits to escape VMs and execute code on the ESXi host. ' references: - https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/devcon - https://communities.vmware.com/t5/VMware-Workstation-Pro/VMCI-driver-issues/td-p/2866060 - https://github.com/search?q=devcon+disable+VMWVMCIHOSTDEV - https://huntress.com/blog/esxi-vm-escape-exploit author: Matt Anderson, Dray Agha, Anna Pham (Huntress) date: 2026-01-02 tags: - attack.persistence - attack.privilege-escalation - attack.defense-impairment - attack.t1543.003 - attack.t1685 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \devcon.exe - OriginalFileName: DevCon.exe selection_action: CommandLine|contains: ' disable ' selection_vmci_pci: CommandLine|contains: - 15AD&DEV_0740 - VMWVMCIHOSTDEV condition: all of selection_* falsepositives: - Legitimate VMware administration, Tools installation/uninstallation, or troubleshooting driver conflicts. - Automated scripts in virtualized environments for device cleanup. level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_devcon_disable_vmci_driver/info.yml