{"id":"4c4af3cd-2115-479c-8193-6b8bfce9001c","title":"PowerShell ICMP Exfiltration","description":"Detects Exfiltration Over Alternative Protocol - ICMP. Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.","author":"Bartlomiej Czyz @bczyz1, oscd.community","status":"test","level":"medium","date":"2020-10-10","modified":"2022-12-25","tags":["attack.exfiltration","attack.t1048.003"],"technique_ids":["T1048.003"],"logsource":{"product":"windows","category":"ps_script","definition":"Requirements: Script Block Logging must be enabled"},"falsepositives":["Legitimate usage of System.Net.NetworkInformation.Ping class"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-2---exfiltration-over-alternative-protocol---icmp"],"source_path":"rules/windows/powershell/powershell_script/posh_ps_icmp_exfiltration.yml","source_sha256":"53d84dc0ff8ff03d918be95c608070d5e919d036e32d02f9297ad343e595d7ff","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/powershell/powershell_script/posh_ps_icmp_exfiltration.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: PowerShell ICMP Exfiltration\nid: 4c4af3cd-2115-479c-8193-6b8bfce9001c\nstatus: test\ndescription: Detects Exfiltration Over Alternative Protocol - ICMP. Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-2---exfiltration-over-alternative-protocol---icmp\nauthor: 'Bartlomiej Czyz @bczyz1, oscd.community'\ndate: 2020-10-10\nmodified: 2022-12-25\ntags:\n    - attack.exfiltration\n    - attack.t1048.003\nlogsource:\n    product: windows\n    category: ps_script\n    definition: 'Requirements: Script Block Logging must be enabled'\ndetection:\n    selection:\n        ScriptBlockText|contains|all:\n            - 'New-Object'\n            - 'System.Net.NetworkInformation.Ping'\n            - '.Send('\n    condition: selection\nfalsepositives:\n    - Legitimate usage of System.Net.NetworkInformation.Ping class\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1048.003","id":"T1048.003","name":"Exfiltration Over Unencrypted Non-C2 Protocol","page":"techniques/enterprise/T1048.003/"}],"data_path":"data/detection-rules/4c4af3cd-2115-479c-8193-6b8bfce9001c.json","kind":"sigma"}