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[ "A", "possible", "indication", "for", "timing", "might", "be", "when", "the", "app", "reaches", "a", "specific", "number", "of", "downloads", "or", "infected", "devices", "." ]
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[ "The", "coding", "style", "suggests", "that", "the", "cybercriminals", "behind", "this", "campaign", "are", "amateurs", "." ]
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[ "Users", "are", "cautioned", "to", "research", "and", "check", "reviews", "before", "they", "download", "apps", "." ]
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[ "Make", "sure", "that", "all", "other", "apps", "installed", "and", "the", "device", "operating", "systems", "are", "updated", "to", "the", "latest", "version", "." ]
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419
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420
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430
[ "What", "’", "s", "innovative", "about", "this", "ransomware", "is", "how", "it", "displays", "its", "ransom", "note", "." ]
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[ "No", "matter", "what", "button", "is", "pressed", ",", "the", "window", "stays", "on", "top", "of", "all", "other", "windows", "." ]
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[ "To", "catch", "these", "threats", ",", "security", "solutions", "used", "heuristics", "that", "focused", "on", "detecting", "this", "behavior", "." ]
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[ "Google", "later", "implemented", "platform-level", "changes", "that", "practically", "eliminated", "this", "attack", "surface", "." ]
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453
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454
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455
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456
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457
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458
[ "The", "frozen", "TinyML", "model", "is", "useful", "for", "making", "sure", "images", "fit", "the", "screen", "without", "distortion", "." ]
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459
[ "In", "the", "case", "of", "this", "ransomware", ",", "using", "the", "model", "would", "ensure", "that", "its", "ransom", "noteβ€”typically", "fake", "police", "notice", "or", "explicit", "images", "supposedly", "found", "on", "the", "deviceβ€”would", "appear", "less", "contrived", "and", "more", "believable", ",", "increasing", "the", "chances", "of", "the", "user", "paying", "for", "the", "ransom", "." ]
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460
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461
[ "We", "will", "continue", "to", "monitor", "this", "ransomware", "family", "to", "ensure", "customers", "are", "protected", "and", "to", "share", "our", "findings", "and", "insights", "to", "the", "community", "for", "broad", "protection", "against", "these", "evolving", "mobile", "threats", "." ]
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462
[ "Protecting", "organizations", "from", "threats", "across", "domains", "and", "platforms", "Mobile", "threats", "continue", "to", "rapidly", "evolve", ",", "with", "attackers", "continuously", "attempting", "to", "sidestep", "technological", "barriers", "and", "creatively", "find", "ways", "to", "accomplish", "their", "goal", ",", "whether", "financial", "gain", "or", "finding", "an", "entry", "point", "to", "broader", "network", "compromise", "." ]
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463
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464
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465
[ "Microsoft", "Defender", "for", "Endpoint", "on", "Android", ",", "now", "generally", "available", ",", "extends", "Microsoft", "’", "s", "industry-leading", "endpoint", "protection", "to", "Android", "." ]
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466
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467
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468
[ "Learn", "more", "about", "our", "mobile", "threat", "defense", "capabilities", "in", "Microsoft", "Defender", "for", "Endpoint", "on", "Android", "." ]
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469
[ "Malware", ",", "phishing", ",", "and", "other", "threats", "detected", "by", "Microsoft", "Defender", "for", "Endpoint", "are", "reported", "to", "the", "Microsoft", "Defender", "Security", "Center", ",", "allowing", "SecOps", "to", "investigate", "mobile", "threats", "along", "with", "endpoint", "signals", "from", "Windows", "and", "other", "platforms", "using", "Microsoft", "Defender", "for", "Endpoint", "’", "s", "rich", "set", "of", "tools", "for", "detection", ",", "investigation", ",", "and", "response", "." ]
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470
[ "Threat", "data", "from", "endpoints", "are", "combined", "with", "signals", "from", "email", "and", "data", ",", "identities", ",", "and", "apps", "in", "Microsoft", "365", "Defender", "(", "previously", "Microsoft", "Threat", "Protection", ")", ",", "which", "orchestrates", "detection", ",", "prevention", ",", "investigation", ",", "and", "response", "across", "domains", ",", "providing", "coordinated", "defense", "." ]
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471
[ "Microsoft", "Defender", "for", "Endpoint", "on", "Android", "further", "enriches", "organizations", "’", "visibility", "into", "malicious", "activity", ",", "empowering", "them", "to", "comprehensively", "prevent", ",", "detect", ",", "and", "respond", "to", "against", "attack", "sprawl", "and", "cross-domain", "incidents", "." ]
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472
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473
[ "One", "of", "the", "tell-tale", "signs", "of", "an", "obfuscated", "malware", "is", "the", "absence", "of", "code", "that", "defines", "the", "classes", "declared", "in", "the", "manifest", "file", "." ]
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474
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475
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476
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477
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478
[ "It", "’", "s", "a", "messaging", "object", "that", "can", "be", "used", "to", "request", "an", "action", "from", "another", "app", "component", "." ]
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479
[ "The", "Intent", "object", "carries", "a", "string", "value", "as", "β€œ", "action", "”", "parameter", "." ]
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480
[ "The", "malware", "creates", "an", "Intent", "inside", "the", "decryption", "function", "using", "the", "string", "value", "passed", "as", "the", "name", "for", "the", "Intent", "." ]
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481
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482
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483
[ "The", "callee", "then", "invokes", "the", "getAction", "method", "to", "get", "the", "decrypted", "content", "." ]
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484
[ "Payload", "deployment", "Once", "the", "static", "block", "execution", "is", "complete", ",", "the", "Android", "Lifecycle", "callback", "transfers", "the", "control", "to", "the", "OnCreate", "method", "of", "the", "main", "class", "." ]
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485
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486
[ "Malware", "code", "showing", "decryption", "of", "assets", "Figure", "10", "." ]
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487
[ "Decrypting", "the", "assets", "After", "being", "decrypted", ",", "the", "asset", "turns", "into", "the", ".dex", "file", "." ]
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488
[ "This", "is", "a", "notable", "behavior", "that", "is", "characteristic", "of", "this", "ransomware", "family", "." ]
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489
[ "Comparison", "of", "code", "of", "Asset", "file", "before", "and", "after", "decryption", "Figure", "11", "." ]
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490
[ "Asset", "file", "before", "and", "after", "decryption", "Once", "the", "encrypted", "executable", "is", "decrypted", "and", "dropped", "in", "the", "storage", ",", "the", "malware", "has", "the", "definitions", "for", "all", "the", "components", "it", "declared", "in", "the", "manifest", "file", "." ]
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491
[ "It", "then", "starts", "the", "final", "detonator", "function", "to", "load", "the", "dropped", ".dex", "file", "into", "memory", "and", "triggers", "the", "main", "payload", "." ]
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492
[ "Malware", "code", "showing", "loading", "of", "decrypted", "dex", "file", "Figure", "12", "." ]
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493
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494
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495
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496
[ "Malware", "code", "showing", "definition", "of", "populateConfigMap", "Figure", "14", "." ]
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497
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498
[ "This", "action", "registers", "code", "components", "to", "get", "notified", "when", "certain", "system", "events", "happen", "." ]
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499
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