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防毒擋不住?勒索病毒猖獗與實作
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adr
March 18, 2016
Technology
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防毒擋不住?勒索病毒猖獗與實作
SITCON2016, 淺談現代防毒惡意分析行為與模糊弱點與勒索軟體猖獗與實作 by aaaddress1
http://sitcon.org/2016/
adr
March 18, 2016
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Transcript
㏂㏰懀臶樿䁩卓秝惂苌 勭䃒墰㢝↛⋲⃮磑嶨群䥥熲㥸橃 5+6%10$[CCCFFTGUU 防毒擋不住︖ 勒索軟體猖獗與實作
ō沍絭彋 CCCFFTGUUCFT ō劊Ⰸ⹙羝峫テ粕Ⅽㅕ俻 ō%% %8$/#5/2[VJQP5YKHV ō4GXGTUG'PIKPGGTKPI5MKNNU ō9KPFQYU/CE15#PFTQKF ō⋬↛揉圞㬝獌adr.horse ō6&1*CEMGT%QTG/GODGT
+54+峩䡌征徍↛ ō*+6%10 ō%/6#+&5巼勦 ō%/6Z㔬縂崱㸛绮巼勦
㇃嵒
⛥∮厐㏔綌綌㧪梽 羝瞗䥥㩒㩒
⃫傓㉩♒榋䥥猳
⃫傓㉩♒榋䥥猳 䎛↡熝獑
缙宾椓禖猳 䎛↡熝獑 䎛↡熝獑
⃮宾椓禖㧤ℎ禖猳 㧤㉸砵䆬猳
䎛↡熝獑䎛↡熝獑䎛 ↡熝獑䎛↡熝獑䎛↡ 熝獑䎛↡熝獑䎛↡熝獑 䎛↡熝獑䎛↡熝獑䎛 ↡熝獑䎛↡熝獑䎛↡
勤撰≠㥏剦Ⰸ䨟 㣴✙㠗䁩甙
㔡⇆⃮㧤瓴⛋巼△倃懀臶苌 勭㤐懤瓴橃䥥槜呇䢦禖䫆帹 ㏔綌↷幑粕䥥⛐⇆恑Ⅷ3AAA3 綌沍用用巼⛅猺⡣猳
None
實務分辨病毒與非病毒
病毒是什麼
%JTQOGA5GVWRGZG 替使⽤者安裝Chrome瀏覽器
None
%JTQOGA5GVWRGZG 替使⽤者安裝Chrome瀏覽器 + Hao123
%JTQOGA5GVWRGZG 替使⽤者安裝Chrome瀏覽器 + 百度全家桶
%JTQOGA5GVWRGZG 替使⽤者安裝Chrome瀏覽器 + 百度全家桶
⠐⃡矦┆⨉ 懀臶桬䥝勦䥥㏰疍
⎔糺⃫䢦禖㧪聅石䴏䧏䥥 ㏂∽╨Ϝ♒瞘ㆇ⻇⃮涹 汷櫢偢㪗Ϝ♒瞘ㆇ⅀⃮涹 縸榧⋂䠉甞纝珮⋬羝 砒桡㨉沍
㛿䬕⮿猺Ⰸ揉ⓧ㤐⌻⮿Ⅷ猻
蒐集信⽤卡號、個資 後⾨⽊⾺ 䵠耼椓稱䔧⦿⎔羝㡺 Ⰸ撰勜㫆㠰㐀㡨⇗ 㟵㔋傓櫢ㄔ⺧嬭䎛 䵠耼椓稱䔧⦿⎔羝㡺 桬祚界▶櫦 㟘甩织ㄶ䡌橃
䢦禖䮝 猺/CNYCTG*CUJ猻
XKTWUGZG 我要偷偷上傳使⽤者裸照 我要偷偷幫磺胺粉絲團按讚 我要偷偷上傳使⽤者信⽤卡號 偷偷幫使⽤者過年存壓歲錢
XKTWUGZG 你這個壞寶寶!檔名為virus.exe 就不準使⽤者下載(加入到雲端⿊名單)
ECVGZG珮XTWUGZG珮8+475GZG 哇!是好寶寶捏,放⾏~放⾏~
㢝㤐磷砒椓禖⛋痙
8+475GZG 好的,VIRUS.exe先⽣, 您的指紋是 MD5( 三圍+身⾼+體重... ) 我已經把您備份到壞蛋資料庫囉!
嗯...⿊名單中好像還沒看到這位先 ⽣呀,應該不是壞⼈吧︖
嗯...⿊名單中好像還沒看到這位先 ⽣呀,應該不是壞⼈吧︖ 長⼤啦~~~
嗯...⿊名單中好像還沒看到這位先 ⽣呀,應該不是壞⼈吧︖ 變⾊龍yo
⧁䎛/&5*#⺗㢰粹榽䄫ⓞ磕 䧏㳺㤐甩㉸戙⑆㡨⇗珮⚤磕䥥 ⠐⃡帹┆猺㗨俬猻
獟&㝿䥞⛮⢏
箞㊖䮝 猺䢦禖劊䮝猻
我要不停地彈出⾊情網⾴ 18upSeaDog.com
聅磢⋺椓禖礱勦㏔Ⅷ⃬⃡
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TFCVC☡㺖
那我就檢測程式靜態⽂字中帶有 18upSeaDog.com就禁⽌開啟 我要不停地彈出⾊情網⾴ 18upSeaDog.com
我要下終端機命令: taskkill -f -im Anti-Virus.exe #PVK8KTWUGZG
↫Ⰺ≁㏔俥痏䠀磢獌 ň⻰瘤假俥⢯獑ʼn猺獪猻 ň⻰瘤苌㓲㏔䡗≁⹊⸱䥥䔙ʼn猺獡猻
我要不停地彈出⾊情網⾴ 18upSeaDog.com 那我就檢測程式靜態⽂字中帶有 18upSeaDog.com就禁⽌開啟
我要不停地彈出⾊情網⾴ Deec(17upSeadog.com)
None
None
磷ㄙ䠉䥥㔬㺖⼒㤐:14苌 ⃮職:14▁⺧⻇㉩痙䬕缷 㔡⇆砒≧肪㇗∙ⓛⅧ&'5珮4%粹∽㾶
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㕟㫆椓禖箞㊖䮝6QQN /[%%.8KT6GUVŎGVE
1 2 3 4 5 6 7 8 9
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6B ? ? ? ? E8 ? ? ? ?
E8 ? ? ? ? 83 C4 30
None
眂眂ㄗ⻰⹊
⃮䫆聼≁⋲㧪㽳㧪䷆ㅕ
Lv.20 胙۱磪绚樌ѿ磪䌌揔純 ࢿ盚ॊ 裡ᶎ盚ᘏ 脒䵹盚ᘏ
ٍ磪ਠ碉 C&C ጱ纷ୗ膏緳矒ጱ盅槹 क़ጼ፡蚏㬵蠅脀牏詂獧ग़ ፡犲篷疏ݝ䨝薹瓟婘䁆ᤈጱ纷ୗ 䘣䰬 䋿褬盅槹 䵹ҁShell҂
None
None
None
䡗竅肪㧪㧕⯻側 ⼒⃮㚱Ⅷ2 哔㢝㠩㩽痞∶獑
None
None
6JGOKFCZ䔩
None
6JGOKFCZ䔩
None
⃮職⧁䎛▁㺝完䚊Ⰻ苌 㔡⇆揉ⓧ椓禖㚂甩 ň≁䥥㺝㓲硵⃮㙪㓲⼒䡗㧪禖ʼn䥥丷䡆 ⊾羅䡗Ⅼ↛禆䦫ビ沍忞
㢝㤐椓禖Ⰸ㇁⋲俼俼㣯䥞苌 樽㐬ⓧ㩱ビ側㞬⃮∰⛥ㇰⰨ䃌㕡トⅧ
到此為⽌, 以上都屬於靜態部分的攻防戰
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在網路上查詢「免殺教程」 教程都在教你如何過「靜態檢測」
ℜ▶ⓧ㩱
嬭䎛㟵㔋 猺#2+*QQM猻
⫣⫣㹄㹄䥥ℎ⧬↛
⫣⫣㹄㹄䥥ℎ⧬↛
䧕碉㕫椓禖ㅚ㙪 ⃡⽒⃮Ⅽ纗[Q
砗懀哋ヒ峯嶷☡㤐聅熝磐≠䠉勦痞∶⚮瞗宾 /KETQUQHV5GEWTKV['UUGPVKCNU椓禖䠃➢䥥
蝡֖य़ᐟ梊ਁler (´ŋ_ŋ`)牧犋ฎ౯梊ਁQQ
None
⍘伞䷁≧䠉䠉
None
㘟硺伞䷁
⌀⼮肪舎 猺舍␂聜粕猻
Malware
Malware 羬翄๐率
Malware 羬翄๐率 Malware
None
None
⌀憌臶 猺⺥⺠⻮羖猻
None
None
.+8'&'/1 ⃡緈砒桡痞∶⍘悲聜≁槜呇 猺⇆(CEGDQQM/GUUGPIGT&GUMVQR㈒熿猻
粕ㇰ䮝㿉⑆
⌨▶∽嬭䎛 䃘䂧椓禖屷綌
%QFG+PGLEVKQP +(KNG1RGTCVKQP 5KFGNQCFKPI %QFG+PGLEVKQP +(KNG1RGTCVKQP 7PKPUVCNNGZG*KLCEMKPI 9WUCGZG 㕶㠟㡨⇗ 5KFGNQCFKPI
9/+䵛䥞缷㩱㈒熿㧠碍㧮甒㡨⇗ 4WPFNNGZG缷㩱㈒熿 OUJVONFNN ,CXCUETKRV2TQVQEQN ╖㇛俜糺䥞⛮⢏聜粕 5XEJQUVU[URTG 㴂倥㧠碍 䃜▁峩䡌⇜甒苌⇜甒貼㌈ℎ⇆磷涹禆椱聴嬭 UFD羝㡺ㆌ瞗宾粕ㇰ㈒熿 ↷'ZRNQKV獑猺GZŎ46(珮 FQE FNN猻
勒索軟體與實作
CryptoWall 4.0 5384f752e3a2b59fad9d0f143ce0215a
None
None
None
Ransomware 疥ᛔ蛪ဳ獈 Explorer.exe 疥ᛔ蛪戢㲘樄秚珸㵕殻 疥ᛔ蛪ဳ獈ک Svchost.exe ݻ֑๐瑊覿玲RSA獍槄 䋿֢ےੂ
Ransomware 㵕眲ኞ౮褰秚AESᰂ槄 犥AESᰂ槄ےੂկ 疥獍槄ےੂ盅ጱ AESᰂ槄狒ਂ 蠣ֵአᘏ՞ѽѽ
䨀標㼄癕殉⼭穯ℬ △倃懀臶
䨀標㼄癕殉⼭穯ℬ △倃懀臶
伂椬⻇䠉%2⌝涹䥥 △倃懀臶
伂椬⻇䠉%2⌝涹䥥 △倃懀臶 倶⻮㤐㎉╖礱䥞㔬群⺗䥥 痙Ⰶ∕猺⡣
Ransomware 戢㲘樄秚珸㵕 ኞ叨褰秚AES Key ኞ叨褰秚RSA蟴䌘 狒ਂRSA獍槄ෝ秚 獍ᐺ槄ࢧ㯽C&C RSAےੂAES Key㪔狒ਂ 犥AESےੂֵአ
ᘏ㮆Ոկ
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None
None
None
None
None
&GOQ
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防毒軟體都在幹嘛 ō 樽㐬箞㊖䮝㫆禕 ō ℜ▶椓䲇検㞬 ō 槓㫆禕 ō 宽䇰㿿 ō
⍘≠䠉勦⋬羝猺獑猻
防毒軟體都在幹嘛 ō 樽㐬箞㊖䮝㫆禕 ō ℜ▶椓䲇検㞬 ō 槓㫆禕 ō 宽䇰㿿 ō
⍘≠䠉勦⋬羝猺獑猻 ➔➔苌⌨椓禖珮Ŀ瞗瓴嬼⯌㔮㧪⛐叞⡇
結語
None
幑粕ℎ㚱┑䥥㕡绮苌 ⛐⇆┑㓲䥥)KVJWDCCCFFTGUU ⛐叞㧤⃮⻰㊤愃┑揉⇞⻇∽ 猺祚䙨Ⰸ㱣↬㢝┑ℬ桴猻
羝峫瞗瓴 ℇ㽳㧪嶑⛐⇆⊾羅≁苌 ⅀⃮㤐宾Ⅷ椓禖懀臶 ⼒㧪䠉
⛇⯷苌 /CE15惀.KPWZ砵痙勦 ⅀┆⨉㢢肰䷲㉸Ⰻ桬㊤
你知道現在病毒也懂跨平台開發嗎︖
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6&1*2+2'羝瞗䰟⧹懵瞪 6&1*不Ⅽ禈↛㔮㖼◀峩䡌 6&1*⹙劳⨑疍#NRJC䔩
7PEQPH .KPWZ0GVYQTM0COGURCEG
「莫風微婆」 魯了⼆⼗多年,快沒⼒了 019+9#06;17♥ KQCPKUCNYC[UQPG
Q&A
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