{"id":"fdeebdf0-9f3f-4d08-84a6-4c4d13e39fe4","title":"Network Connection Initiated To Mega.nz","description":"Detects a network connection initiated by a binary to \"api.mega.co.nz\".\nAttackers were seen abusing file sharing websites similar to \"mega.nz\" in order to upload/download additional payloads.\n","author":"Florian Roth (Nextron Systems)","status":"test","level":"low","date":"2021-12-06","modified":"2024-05-31","tags":["attack.exfiltration","attack.t1567.002"],"technique_ids":["T1567.002"],"logsource":{"category":"network_connection","product":"windows"},"falsepositives":["Legitimate MEGA installers and utilities are expected to communicate with this domain. Exclude hosts that are known to be allowed to use this tool."],"references":["https://megatools.megous.com/","https://www.mandiant.com/resources/russian-targeting-gov-business"],"source_path":"rules/windows/network_connection/net_connection_win_domain_mega_nz.yml","source_sha256":"82c67957109ac524fc47a56d6f2164624ec8cdc29e9e267e1762727ffeda4da1","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/network_connection/net_connection_win_domain_mega_nz.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Network Connection Initiated To Mega.nz\nid: fdeebdf0-9f3f-4d08-84a6-4c4d13e39fe4\nstatus: test\ndescription: |\n    Detects a network connection initiated by a binary to \"api.mega.co.nz\".\n    Attackers were seen abusing file sharing websites similar to \"mega.nz\" in order to upload/download additional payloads.\nreferences:\n    - https://megatools.megous.com/\n    - https://www.mandiant.com/resources/russian-targeting-gov-business\nauthor: Florian Roth (Nextron Systems)\ndate: 2021-12-06\nmodified: 2024-05-31\ntags:\n    - attack.exfiltration\n    - attack.t1567.002\nlogsource:\n    category: network_connection\n    product: windows\ndetection:\n    selection:\n        Initiated: 'true'\n        DestinationHostname|endswith:\n            - 'mega.co.nz'\n            - 'mega.nz'\n    condition: selection\nfalsepositives:\n    - Legitimate MEGA installers and utilities are expected to communicate with this domain. Exclude hosts that are known to be allowed to use this tool.\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1567.002","id":"T1567.002","name":"Exfiltration to Cloud Storage","page":"techniques/enterprise/T1567.002/"}],"data_path":"data/detection-rules/fdeebdf0-9f3f-4d08-84a6-4c4d13e39fe4.json","kind":"sigma"}