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マルウェアの分類はどこまで必
要とされているのか、いないの
か
2020年1月 OWASP Nagoya Chapter meeting LT
マルウェアの分類を
どんなときに必要としますか?
分類の体系
感染目的に着目した分類
ランサムウェア DDoS
機能に着目した分類
(バックドア) ボット
感染形態に着目した分類
ワーム トロイの木馬
ファミリ名による分類
(コードによる分類)
Mirai
WannaCry
Win32、OSX、SWF、Linux、Docとか見た目の分類
感染形態に着目した分類
 ウイルス
 ワーム
 トロイの木馬
 ルートキット
 キーロガー
バンキン
グトロイ
RAT
(RemoteAccessTrojan)
機能に着目した分類
 ダウンローダー
 ドロッパー
 ボット
 バックドア
感染目的に着目した分類
 スパイウェア (盗んで稼ぐ)
 ランサムウェア (脅して稼ぐ)
 スケアウェア (脅して稼ぐ)
 アドウェア (広告で稼ぐ)
 コインマイナー (コイン掘って稼ぐ)
 (DoS攻撃/システム破壊)
 (スキャン/スパムメール送信)
Virus Totalの一例 これは何?
Emotet どうしましょう?
トロイの木馬 バックドア
スパイウェア
80-130のC2に接続し続ける
メール情報や認証情報を
窃取するモジュール追加
ワーム 感染拡大モジュールの追加
ダウンローダー Trickbot, Ursnif, Ryuk をダウンロード
してインストール
ボット ボットネットを形成
スパムメール送
信
マルウェア分類とは、もはや
混同しやすいラベル付けなのか!?
 軸が異なるラベリングが混同する
 バンキングトロイ、RATなどは2軸を持っているた
め、業界でも混同する
エイリアス(別名 aka.)により混同する
ファミリ名
Sunbladeの別名は?
一つのマルウェアがオンメモリで進化するか
ら混同する
マルウェアの分類はどこまで必
要とされているのか、いないの
か
Google検索して情報を得るためのキーワードであればよいのでは?
あまりラベル名の意味にこだわりすぎず、マルウェア or NOT の判断できる情報
が重要
カンガルー
• 哺乳綱(ほにゅうこう)
– 有袋類(ゆうたい類)
• 双前歯目(そうぜんしもく)
– カンガルー科
» カンガルー属
• アカカンガルー
• オオカンガルー
• ・・・

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OWASP_NAGOYA_2020年1月LT_マルウェアの分類はどこまで必要とされているのか、いないのか.pptx

Notas do Editor

  1. ウイルススキャンでマルウェアが検知された時 怪しいファイルをみつけてVirusTotalに投げた時
  2. Webサーバーに感染して設置されるタイプは、バックドアとコインマイナーがほとんど。
  3. スケアウェアとは,ユーザに虚偽の情報を提示し不安 (scare) を煽ることで,無意味なソ フトウェアを販売することを目的としたマルウェアである.典型的な例として,偽のマ ルウェア感染情報をユーザに提示することで Web サイトに誘導し,何も意味の持たない プログラムをアンチウイルスソフトとして販売しようとするものがある. FakeAVなど
  4. 進化するマルウェアは分類しづらい  「Emotet」マルウェアは2014年にバンキングマルウェアとして報告されたのが最初ですが、その後改修などが行われ他のマルウェアをダウンロードするローダーとしての役割を持つようになりました
  5. Emdivi
  6. IoCでもハッシュでも
  7. 生物学は見た目の特徴ベースでうまく分類できている気がする マルウェアが難しいのは見えないから??