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However, many of these malware are fileless only while entering a user\u00e2\u20ac\u2122s system, as they eventually reveal themselves when they execute their payload. Attacks that use completely fileless malware are a rare occurrence, so we thought it important to discuss a new trojan known as JS_POWMET (Detected by Trend Micro as JS_POWMET.DE), which arrives via an autostart registry procedure. By utilizing a completely fileless infection chain, the malware will be more difficult to analyze using a sandbox, making it more difficult for anti-malware engineers to examine.\r\n\r\nInitial reports from our Smart Protection Network (SPN) data reveals JS_POWMET affecting APAC the most, with almost 90% of the infections coming from the region." }, { "type": "observed-data", "spec_version": "2.1", "id": "observed-data--5982cc29-8840-4c94-84a8-e78402de0b81", "created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f", "created": "2017-08-03T07:15:39.000Z", "modified": "2017-08-03T07:15:39.000Z", "first_observed": "2017-08-03T07:15:39Z", "last_observed": "2017-08-03T07:15:39Z", "number_observed": 1, "object_refs": [ "url--5982cc29-8840-4c94-84a8-e78402de0b81" ], "labels": [ "misp:type=\"link\"", "misp:category=\"External analysis\"", "osint:source-type=\"blog-post\"" ] }, { "type": "url", "spec_version": "2.1", "id": "url--5982cc29-8840-4c94-84a8-e78402de0b81", "value": "http://blog.trendmicro.com/trendlabs-security-intelligence/look-js_powmet-completely-fileless-malware/" }, { "type": "indicator", "spec_version": "2.1", "id": "indicator--5982cc88-5c08-41f0-8089-c46702de0b81", "created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f", "created": "2017-08-03T07:15:39.000Z", "modified": "2017-08-03T07:15:39.000Z", "description": "TROJ_PSINJECT.A", "pattern": "[file:hashes.SHA256 = '7004b6c1829a745002feb7fbb0aad1a4d32c640a6c257dc8d0c39ce7b63b58cc']", "pattern_type": "stix", "pattern_version": "2.1", "valid_from": "2017-08-03T07:15:39Z", "kill_chain_phases": [ { "kill_chain_name": "misp-category", "phase_name": "Payload delivery" } ], "labels": [ "misp:type=\"sha256\"", "misp:category=\"Payload delivery\"", "misp:to_ids=\"True\"" ] }, { "type": "indicator", "spec_version": "2.1", "id": "indicator--5982cc88-602c-40a7-aa70-c46702de0b81", "created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f", "created": "2017-08-03T07:15:39.000Z", "modified": "2017-08-03T07:15:39.000Z", "description": "JS_POWMET.DE", "pattern": "[file:hashes.SHA256 = 'e27f417b96a33d8449f6cf00b8306160e2f1b845ca2c9666081166620651a3ae']", "pattern_type": "stix", "pattern_version": "2.1", "valid_from": "2017-08-03T07:15:39Z", "kill_chain_phases": [ { "kill_chain_name": "misp-category", "phase_name": "Payload delivery" } ], "labels": [ "misp:type=\"sha256\"", "misp:category=\"Payload delivery\"", "misp:to_ids=\"True\"" ] }, { "type": "indicator", "spec_version": "2.1", "id": "indicator--5982cc88-d6a0-4a83-aa9a-c46702de0b81", "created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f", "created": "2017-08-03T07:15:39.000Z", "modified": "2017-08-03T07:15:39.000Z", "description": "BKDR_ANDROM.ETIN", "pattern": "[file:hashes.SHA256 = 'bff21cbf95da5f3149c67f2c0f2576a6de44fa9d0cb093259c9a5db919599940']", "pattern_type": "stix", "pattern_version": "2.1", "valid_from": "2017-08-03T07:15:39Z", "kill_chain_phases": [ { "kill_chain_name": "misp-category", "phase_name": "Payload delivery" } ], "labels": [ "misp:type=\"sha256\"", "misp:category=\"Payload delivery\"", "misp:to_ids=\"True\"" ] }, { "type": "indicator", "spec_version": "2.1", "id": "indicator--5982cd9b-d078-4bf7-9650-c41602de0b81", "created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f", "created": "2017-08-03T07:15:39.000Z", "modified": "2017-08-03T07:15:39.000Z", "description": "BKDR_ANDROM.ETIN - 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