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CryptoLocker

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388:, 41% of those who claimed to be victims said that they had decided to pay the ransom, a proportion much larger than expected; Symantec had estimated that 3% of victims had paid and Dell SecureWorks had estimated that 0.4% of victims had paid. Following the shutdown of the botnet that had been used to distribute CryptoLocker, it was calculated that about 1.3% of those infected had paid the ransom; many had been able to recover files which had been backed up, and others are believed to have lost huge amounts of data. Nonetheless, the operators were believed to have extorted a total of around $ 3 million. 149:
or a pre-paid cash voucher) was made by a stated deadline, and it threatened to delete the private key if the deadline passes. If the deadline was not met, the malware offered to decrypt data via an online service provided by the malware's operators, for a significantly higher price in bitcoin. There
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some time for encryption to take place; immediate removal of the malware (a relatively simple process) before it has completed would limit its damage to data. Experts suggested precautionary measures, such as using software or other security policies to block the CryptoLocker payload from launching.
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While security software is designed to detect such threats, it might not detect CryptoLocker at all, or only after encryption is underway or complete, particularly if a new version unknown to the protective software is distributed. If an attack is suspected or detected in its early stages, it takes
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In November 2013, the operators of CryptoLocker launched an online service that claimed to allow users to decrypt their files without the CryptoLocker program, and to purchase the decryption key after the deadline had expired; the process involved uploading an encrypted file to the site as a sample
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that had been used to distribute the malware. During the operation, a security firm involved in the process obtained the database of private keys used by CryptoLocker, which was in turn used to build an online tool for recovering the keys and files without paying the ransom. It is believed that the
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As part of the operation, the Dutch security firm Fox-IT was able to procure the database of private keys used by CryptoLocker; in August 2014, Fox-IT and fellow firm FireEye introduced an online service which allows infected users to retrieve their private key by uploading a sample file, and then
1368: 281:(BTC) within 72 or 100 hours (while starting at 2 BTC, the ransom price has been adjusted down to 0.3 BTC by the operators to reflect the fluctuating value of bitcoin), or else the private key on the server would be destroyed, and "nobody and never [ 287:] will be able to restore files." Payment of the ransom allows the user to download the decryption program, which is pre-loaded with the user's private key. Some infected victims claim that they paid the attackers but their files were not decrypted. 176:
operators of CryptoLocker successfully extorted a total of around $ 3 million from victims of the trojan. Other instances of encryption-based ransomware that have followed have used the "CryptoLocker" name (or variations), but are otherwise unrelated.
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backups made before the infection that are inaccessible from infected computers cannot be attacked by CryptoLocker). Due to the length of the key employed by CryptoLocker, experts considered it practically impossible to use a
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and waiting for the service to find a match; the site claimed that a match would be found within 24 hours. Once found, the user could pay for the key online; if the 72-hour deadline passed, the cost increased to 10 bitcoin.
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to obtain the key needed to decrypt files without paying ransom; the similar 2008 trojan Gpcode.AK used a 1024-bit key that was believed to be large enough to be computationally infeasible to break without a concerted
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traced four bitcoin addresses posted by users who had been infected by CryptoLocker, in an attempt to gauge the operators' takings. The four addresses showed movement of 41,928 BTC between 15 October and 18
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to indicate a failed parcel delivery) as a payload. To evade detection by automatic e-mail scanners that can follow links, this variant was designed to require users to visit a web page and enter a
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ransomware trojans working in essentially the same way, including some that refer to themselves as "CryptoLocker"—but are, according to security researchers, unrelated to the original CryptoLocker.
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Due to the nature of CryptoLocker's operation, some experts reluctantly suggested that paying the ransom was the only way to recover files from CryptoLocker in the absence of current backups (
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Although CryptoLocker itself was easily removed, the affected files remained encrypted in a way which researchers considered unfeasible to break. Many said that the
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that causes it to run on startup. It then attempts to contact one of several designated command and control servers; once connected, the server generates a
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should not be paid, but did not offer any way to recover files; others said that paying the ransom was the only way to recover files that had not been
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This article is about specific ransomware software called CryptoLocker. For other similar software, some using the CryptoLocker name, see
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Application"), began spreading in Australia; the ransomware uses infected e-mails, purportedly sent by government departments (e.g.
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against its own encryption using its database of keys, explaining the requirement to wait up to 24 hours to receive a result.
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with the public key, and logs each file encrypted to a registry key. The process only encrypts data files with certain
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files. The payload displays a message informing the user that files have been encrypted, and demands a payment of 400
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which had been used to distribute CryptoLocker and other malware. The Department of Justice also publicly issued an
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determined that these new variants, which it identified as "CryptoLocker.F", were not tied to the original.
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and go through others, frequently relocated in different countries to make tracing them more difficult.
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attached to an email message contains an executable file with the filename and the icon disguised as a
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security analyst Paul Ducklin speculated that CryptoLocker's online decryption service involved a
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from file names to disguise the real .EXE extension. CryptoLocker was also propagated using the
161:. Some victims claimed that paying the ransom did not always lead to the files being decrypted. 2286: 1948: 1928: 3049: 2787: 2740: 2648: 2575: 2359: 1723: 353: 270: 31: 1970: 1826: 898:"Wham bam: Global Operation Tovar whacks CryptoLocker ransomware & GameOver Zeus botnet" 566:"'Operation Tovar' Targets 'Gameover' ZeuS Botnet, CryptoLocker Scourge – Krebs on Security" 2384: 1749: 958: 927: 262: 8: 3074: 3054: 2874: 1902: 1718: 212: 2231: 3044: 3012: 3007: 2904: 2533: 2296: 2222: 1912: 1713: 385: 348: 326:
against the Russian hacker Evgeniy Bogachev for his alleged involvement in the botnet.
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on 5 September 2013. It propagated via infected email attachments, and via an existing
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effort, or the discovery of a flaw that could be used to break the encryption.
246: 58: 1836: 479:"You're infected—if you want to see your data again, pay us $ 300 in Bitcoins" 307:—a consortium constituting a group of law enforcement agencies (including the 3038: 2817: 2276: 2227: 1218: 1180: 970: 831:"CryptoLocker crooks charge 10 Bitcoins for second-chance decryption service" 404: 397: 316: 242: 205: 169: 131: 141:
certain types of files stored on local and mounted network drives using RSA
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that occurred from 5 September 2013 to late May 2014. The attack utilized a
2715: 2515: 2479: 2334: 2324: 2217: 2212: 2207: 2081: 1897: 408: 254: 235: 1175: 1152: 315:), security software vendors, and several universities, had disrupted the 2997: 2987: 2935: 2843: 2699: 2509: 2339: 2201: 2066: 1078:"Cryptolocker Ransomware: What You Need To Know, last updated 06/02/2014" 800: 104: 627:"'Operation Tovar' Targets 'Gameover' ZeuS Botnet, CryptoLocker Scourge" 2940: 2925: 2853: 2593: 2497: 2449: 2425: 2413: 2271: 2196: 2186: 2176: 2161: 2121: 2046: 1677: 1551: 703:"Cryptolocker: How to avoid getting infected and what to do if you are" 539: 412: 323: 138: 111: 48: 2971: 2848: 2812: 2802: 2674: 2491: 2241: 2171: 2111: 1672: 734:"Destructive malware "CryptoLocker" on the loose – here's what to do" 805:"CryptoLocker's crimewave: A trail of millions in laundered Bitcoin" 192:
message, which appears to have been sent by a legitimate company. A
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file, taking advantage of Windows' default behaviour of hiding the
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was no guarantee that payment would release the encrypted content.
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The payload then encrypts files across local hard drives and
189: 2889: 2684: 1279:"CryptoDefense ransomware leaves decryption key accessible" 1270: 1248:"Australia specifically targeted by Cryptolocker: Symantec" 1143:"Blackmail ransomware returns with 1024-bit encryption key" 998:"New Site Recovers Files Locked by Cryptolocker Ransomware" 823: 266: 510:"Cryptolocker ransomware has 'infected about 250,000 PCs'" 1868:
Hollywood Presbyterian Medical Center ransomware incident
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In September 2014, further clones such as CryptoWall and
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back to the infected computer. The server may be a local
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officially announced that over the previous weekend,
1241: 1239: 959:"Inside the Hunt for Russia's Most Notorious Hacker" 587: 585: 583: 126:, and was believed to have first been posted to the 1452:"Scammers use Australia Post to mask email attacks" 665:"CryptoLocker Ransomware Information Guide and FAQ" 1417: 1217:. University of Kent in Canterbury. Archived from 790: 725: 472: 470: 468: 466: 1236: 1032:"Cryptolocker victims to get files back for free" 696: 694: 692: 580: 294: 269:through an anonymous pre-paid cash voucher (i.e. 3036: 860: 858: 856: 423:code before the payload is actually downloaded. 396:The success of CryptoLocker spawned a number of 1908:Russian interference in the 2016 U.S. elections 1363: 1361: 1340:"New CryptoLocker Spreads via Removable Drives" 463: 164:CryptoLocker was isolated in late May 2014 via 1443: 1176:"Ransomware resisting crypto cracking efforts" 689: 1567: 1527:"Ransomware attack knocks TV station off air" 1518: 1395:"Cryptolocker 2.0 – new version, or copycat?" 1167: 989: 934:(Press release). U.S. Department of Justice. 853: 1358: 1069: 920: 381:— about US$ 27 million at that time. 1878:Democratic National Committee cyber attacks 1333: 1331: 1105: 1103: 1025: 1023: 620: 618: 1822:Office of Personnel Management data breach 1574: 1560: 889: 864: 658: 656: 654: 652: 650: 648: 1581: 1387: 1328: 1100: 1020: 765: 615: 501: 184:CryptoLocker typically propagated as an 1307: 1140: 1134: 1075: 731: 700: 32:Ransomware § Encrypting ransomware 14: 3037: 1449: 1337: 1245: 1109: 1088:from the original on 27 September 2022 1057:The Yuma Sun, on a CryptoLocker attack 865:Constantin, Lucian (4 November 2013). 645: 546:from the original on 14 September 2017 507: 476: 1555: 1524: 1405:from the original on 22 November 2016 1316:from the original on 26 December 2016 1173: 995: 956: 938:from the original on 3 September 2014 895: 811:from the original on 23 December 2013 701:Hassell, Jonathan (25 October 2013). 677:from the original on 17 November 2013 624: 257:, and other documents, pictures, and 1537:from the original on 12 October 2016 1462:from the original on 16 October 2014 1431:from the original on 21 October 2014 1338:Pichel, Abigail (26 December 2013). 1276: 1122:from the original on 18 October 2013 1038:from the original on 13 January 2020 1029: 841:from the original on 19 January 2021 799: 489:from the original on 23 October 2013 1873:Commission on Elections data breach 1258:from the original on 7 October 2014 977:from the original on 5 January 2020 957:Graff, Garrett M. (21 March 2017). 766:Ferguson, Donna (19 October 2013). 301:United States Department of Justice 24: 1375:from the original on 29 March 2016 1246:Budmar, Patrick (3 October 2014). 1076:Cannell, Joshua (8 October 2013). 877:from the original on 30 April 2017 662: 520:from the original on 22 March 2019 384:In a survey by researchers at the 25: 3096: 2033:Jeff Bezos phone hacking incident 1502: 1480: 1188:from the original on 3 March 2016 778:from the original on 5 March 2017 732:Ducklin, Paul (12 October 2013). 713:from the original on 2 April 2019 603:from the original on 10 June 2016 2606:Microarchitectural Data Sampling 1842:Ukrainian Power Grid Cyberattack 1750:Cyberterrorism attack of June 25 1483:"Cryptolocker Ransomware attack" 1450:Turner, Adam (15 October 2014). 1289:from the original on 3 July 2014 1110:Leyden, Josh (18 October 2013). 1008:from the original on 7 June 2017 633:from the original on 4 June 2014 508:Kelion, Leo (24 December 2013). 1954:2017 Ukraine ransomware attacks 1791:2014 JPMorgan Chase data breach 1525:Ragan, Steve (7 October 2014). 1496: 1474: 1301: 1200: 1050: 996:Krebs, Brian (15 August 2014). 950: 744:from the original on 8 May 2017 477:Goodin, Dan (17 October 2013). 1786:2014 celebrity nude photo leak 1308:Thomson, Iain (3 April 2014). 1174:Lemos, Robert (13 June 2008). 896:Storm, Darlene (2 June 2014). 558: 532: 295:Takedown and recovery of files 277:), or an equivalent amount in 219:folder, and adds a key to the 137:. When activated, the malware 101:CryptoLocker ransomware attack 13: 1: 2023:Bulgarian revenue agency hack 1801:Russian hacker password theft 1342:. Trend Micro. Archived from 1277:Kirk, Jeremy (1 April 2014). 1141:Naraine, Ryan (6 June 2008). 457: 398:unrelated and similarly named 367: 333: 2157:Bangladesh Black Hat Hackers 1633:(publication of 2009 events) 1030:Ward, Mark (6 August 2014). 625:Krebs, Brian (2 June 2014). 179: 7: 2018:Baltimore ransomware attack 430: 330:receive a decryption tool. 10: 3101: 2292:Tailored Access Operations 1939:WannaCry ransomware attack 1832:Ashley Madison data breach 1776:Anthem medical data breach 1693:PlayStation network outage 1427:. ESET. 4 September 2014. 1401:. ESET. 19 December 2013. 29: 2980: 2964: 2918: 2862: 2831: 2775: 2754: 2708: 2667: 2636: 2627: 2398: 2315: 2145: 2045: 2028:WhatsApp snooping scandal 2005: 1979: 1921: 1893:Indian Bank data breaches 1855: 1814: 1768: 1732: 1706: 1660: 1623: 1616: 1587: 391: 188:to a seemingly innocuous 87: 82: 74: 64: 54: 44: 39: 2570:Speculative Store Bypass 2137:Ukrainian Cyber Alliance 1934:2017 Macron e-mail leaks 230:key pair, and sends the 1944:Westminster data breach 1863:Bangladesh Bank robbery 1806:2014 Yahoo! data breach 1796:2014 Sony Pictures hack 1755:2013 Yahoo! data breach 1740:South Korea cyberattack 1642:Operation Olympic Games 1637:Australian cyberattacks 215:installs itself in the 143:public-key cryptography 2287:Syrian Electronic Army 1997:SingHealth data breach 1760:Singapore cyberattacks 1698:RSA SecurID compromise 1062:8 October 2017 at the 168:, which took down the 3065:Cryptographic attacks 3060:September 2013 events 2576:Lazy FP state restore 2360:Kristoffer von Hassel 2013:Sri Lanka cyberattack 1883:Vietnam Airport Hacks 1724:Operation High Roller 1456:Sydney Morning Herald 1082:Malwarebytes Unpacked 904:. IDG. Archived from 629:. Krebs on Security. 243:mapped network drives 3080:Hacking in the 2010s 2522:Silent Bob is Silent 1582:Hacking in the 2010s 803:(22 December 2013). 599:. 19 November 2013. 299:On 2 June 2014, the 211:When first run, the 2456:SS7 vulnerabilities 1992:Atlanta cyberattack 1961:Equifax data breach 1719:Stratfor email leak 1668:Canadian government 1647:Operation ShadowNet 1505:"Ransomware attack" 1346:on 28 December 2013 837:. 4 November 2013. 208:trojan and botnet. 2905:Petya and NotPetya 2534:ROCA vulnerability 2297:The Shadow Brokers 2223:Iranian Cyber Army 2149:persistent threats 1949:Petya and NotPetya 1913:2016 Bitfinex hack 1888:DCCC cyber attacks 1847:SWIFT banking hack 663:Abrams, Lawrence. 386:University of Kent 372:In December 2013, 349:brute-force attack 3070:2013 in computing 3030: 3029: 3026: 3025: 3018:ZeroAccess botnet 2330:Mustafa Al-Bassam 2097:New World Hackers 2060:associated events 2041: 2040: 1837:VTech data breach 1688:Operation AntiSec 1652:Operation Payback 1611: 1610: 1002:Krebs on Security 670:Bleeping Computer 362:dictionary attack 124:Microsoft Windows 97: 96: 83:Technical details 16:(Redirected from 3092: 2634: 2633: 2307:Yemen Cyber Army 1631:Operation Aurora 1621: 1620: 1590: 1589: 1576: 1569: 1562: 1553: 1552: 1547: 1546: 1544: 1542: 1522: 1516: 1515: 1513: 1511: 1500: 1494: 1493: 1491: 1489: 1478: 1472: 1471: 1469: 1467: 1447: 1441: 1440: 1438: 1436: 1421: 1415: 1414: 1412: 1410: 1391: 1385: 1384: 1382: 1380: 1365: 1356: 1355: 1353: 1351: 1335: 1326: 1325: 1323: 1321: 1312:. 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2441: 2435: 2429: 2423: 2417: 2410: 2408: 2396: 2395: 2393: 2392: 2387: 2382: 2377: 2372: 2367: 2365:Junaid Hussain 2362: 2357: 2355:Jeremy Hammond 2352: 2350:Elliott Gunton 2347: 2342: 2337: 2332: 2327: 2321: 2319: 2313: 2312: 2310: 2309: 2304: 2299: 2294: 2289: 2284: 2282:Stealth Falcon 2279: 2274: 2269: 2264: 2259: 2257:PLA Unit 61486 2254: 2252:PLA Unit 61398 2249: 2247:Numbered Panda 2244: 2239: 2225: 2220: 2215: 2210: 2205: 2199: 2194: 2192:Equation Group 2189: 2184: 2179: 2174: 2169: 2164: 2159: 2153: 2151: 2143: 2142: 2140: 2139: 2134: 2129: 2124: 2119: 2114: 2109: 2104: 2099: 2094: 2089: 2084: 2079: 2074: 2069: 2064: 2063: 2062: 2051: 2049: 2043: 2042: 2039: 2038: 2036: 2035: 2030: 2025: 2020: 2015: 2009: 2007: 2003: 2002: 2000: 1999: 1994: 1989: 1983: 1981: 1977: 1976: 1974: 1973: 1968: 1963: 1958: 1957: 1956: 1946: 1941: 1936: 1931: 1925: 1923: 1919: 1918: 1916: 1915: 1910: 1905: 1900: 1895: 1890: 1885: 1880: 1875: 1870: 1865: 1859: 1857: 1853: 1852: 1850: 1849: 1844: 1839: 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3097: 3086: 3083: 3081: 3078: 3076: 3073: 3071: 3068: 3066: 3063: 3061: 3058: 3056: 3053: 3051: 3048: 3046: 3043: 3042: 3040: 3033: 3019: 3016: 3014: 3011: 3009: 3006: 3004: 3001: 2999: 2996: 2994: 2991: 2989: 2986: 2985: 2983: 2979: 2973: 2970: 2969: 2967: 2963: 2957: 2954: 2952: 2949: 2947: 2944: 2942: 2939: 2937: 2934: 2932: 2929: 2927: 2924: 2923: 2921: 2917: 2911: 2908: 2906: 2903: 2901: 2898: 2896: 2893: 2891: 2888: 2886: 2883: 2881: 2878: 2876: 2873: 2871: 2868: 2867: 2865: 2861: 2855: 2852: 2850: 2847: 2845: 2842: 2840: 2837: 2836: 2834: 2830: 2824: 2821: 2819: 2818:Gameover ZeuS 2816: 2814: 2811: 2809: 2806: 2804: 2801: 2799: 2796: 2794: 2791: 2789: 2786: 2784: 2781: 2780: 2778: 2774: 2768: 2765: 2763: 2760: 2759: 2757: 2753: 2747: 2744: 2742: 2739: 2737: 2734: 2732: 2729: 2727: 2724: 2722: 2719: 2717: 2714: 2713: 2711: 2707: 2701: 2698: 2696: 2693: 2691: 2688: 2686: 2683: 2681: 2678: 2676: 2673: 2672: 2670: 2666: 2660: 2657: 2655: 2652: 2650: 2647: 2645: 2642: 2641: 2639: 2635: 2632: 2630: 2626: 2619: 2616: 2613: 2610: 2607: 2604: 2601: 2598: 2595: 2592: 2589: 2586: 2583: 2580: 2577: 2574: 2571: 2568: 2565: 2562: 2559: 2556: 2553: 2550: 2547: 2544: 2541: 2538: 2535: 2532: 2529: 2526: 2523: 2520: 2517: 2514: 2511: 2508: 2505: 2502: 2499: 2496: 2493: 2490: 2487: 2484: 2481: 2478: 2475: 2472: 2469: 2466: 2463: 2460: 2457: 2454: 2451: 2448: 2445: 2442: 2439: 2436: 2433: 2430: 2427: 2424: 2421: 2418: 2415: 2412: 2411: 2409: 2407: 2402: 2397: 2391: 2388: 2386: 2383: 2381: 2378: 2376: 2373: 2371: 2368: 2366: 2363: 2361: 2358: 2356: 2353: 2351: 2348: 2346: 2343: 2341: 2338: 2336: 2333: 2331: 2328: 2326: 2323: 2322: 2320: 2318: 2314: 2308: 2305: 2303: 2300: 2298: 2295: 2293: 2290: 2288: 2285: 2283: 2280: 2278: 2277:Rocket Kitten 2275: 2273: 2270: 2268: 2265: 2263: 2260: 2258: 2255: 2253: 2250: 2248: 2245: 2243: 2240: 2237: 2233: 2229: 2228:Lazarus Group 2226: 2224: 2221: 2219: 2216: 2214: 2211: 2209: 2206: 2203: 2200: 2198: 2195: 2193: 2190: 2188: 2185: 2183: 2180: 2178: 2175: 2173: 2170: 2168: 2165: 2163: 2160: 2158: 2155: 2154: 2152: 2150: 2144: 2138: 2135: 2133: 2130: 2128: 2125: 2123: 2120: 2118: 2115: 2113: 2110: 2108: 2105: 2103: 2100: 2098: 2095: 2093: 2090: 2088: 2085: 2083: 2080: 2078: 2075: 2073: 2070: 2068: 2065: 2061: 2058: 2057: 2056: 2053: 2052: 2050: 2048: 2044: 2034: 2031: 2029: 2026: 2024: 2021: 2019: 2016: 2014: 2011: 2010: 2008: 2004: 1998: 1995: 1993: 1990: 1988: 1985: 1984: 1982: 1978: 1972: 1971:Disqus breach 1969: 1967: 1964: 1962: 1959: 1955: 1952: 1951: 1950: 1947: 1945: 1942: 1940: 1937: 1935: 1932: 1930: 1927: 1926: 1924: 1920: 1914: 1911: 1909: 1906: 1904: 1901: 1899: 1896: 1894: 1891: 1889: 1886: 1884: 1881: 1879: 1876: 1874: 1871: 1869: 1866: 1864: 1861: 1860: 1858: 1854: 1848: 1845: 1843: 1840: 1838: 1835: 1833: 1830: 1828: 1825: 1823: 1820: 1819: 1817: 1813: 1807: 1804: 1802: 1799: 1797: 1794: 1792: 1789: 1787: 1784: 1782: 1779: 1777: 1774: 1773: 1771: 1767: 1761: 1758: 1756: 1753: 1751: 1748: 1746: 1745:Snapchat hack 1743: 1741: 1738: 1737: 1735: 1731: 1725: 1722: 1720: 1717: 1715: 1714:LinkedIn hack 1712: 1711: 1709: 1705: 1699: 1696: 1694: 1691: 1689: 1686: 1684: 1681: 1679: 1676: 1674: 1671: 1669: 1666: 1665: 1663: 1659: 1653: 1650: 1648: 1645: 1643: 1640: 1638: 1635: 1632: 1629: 1628: 1626: 1622: 1619: 1615: 1607: → 1606: 1603: 1601: 1598: 1596: 1593:←  1592: 1591: 1586: 1577: 1572: 1570: 1565: 1563: 1558: 1557: 1554: 1536: 1532: 1528: 1521: 1506: 1499: 1484: 1477: 1461: 1457: 1453: 1446: 1430: 1426: 1420: 1404: 1400: 1396: 1390: 1374: 1370: 1364: 1362: 1345: 1341: 1334: 1332: 1315: 1311: 1304: 1288: 1284: 1283:Computerworld 1280: 1273: 1257: 1253: 1249: 1242: 1240: 1220: 1216: 1209: 1203: 1187: 1183: 1182: 1181:SecurityFocus 1177: 1170: 1154: 1150: 1149: 1144: 1137: 1121: 1117: 1113: 1106: 1104: 1087: 1083: 1079: 1072: 1065: 1061: 1058: 1053: 1037: 1033: 1026: 1024: 1007: 1003: 999: 992: 976: 972: 968: 964: 960: 953: 937: 933: 929: 923: 907: 903: 902:Computerworld 899: 892: 876: 872: 868: 861: 859: 857: 840: 836: 832: 826: 810: 806: 802: 796: 794: 777: 773: 769: 762: 760: 743: 739: 735: 728: 712: 708: 707:Computerworld 704: 697: 695: 693: 676: 672: 671: 666: 659: 657: 655: 653: 651: 649: 632: 628: 621: 619: 602: 598: 594: 588: 586: 584: 568:. 2 June 2014 567: 561: 545: 541: 535: 519: 515: 511: 504: 488: 484: 480: 473: 471: 469: 467: 462: 453: 450: 448: 445: 443: 440: 438: 435: 434: 428: 426: 422: 418: 414: 410: 406: 405:TorrentLocker 401: 399: 389: 387: 382: 375: 365: 363: 359: 355: 350: 345: 340: 331: 327: 325: 321: 318: 317:Gameover ZeuS 314: 310: 306: 302: 292: 288: 286: 285: 280: 276: 272: 268: 264: 260: 256: 252: 249:, including 248: 244: 239: 237: 233: 229: 226: 222: 218: 214: 209: 207: 206:Gameover ZeuS 203: 199: 195: 191: 187: 177: 174: 171: 170:Gameover ZeuS 167: 162: 160: 156: 151: 148: 144: 140: 136: 133: 132:Gameover ZeuS 129: 125: 121: 117: 113: 110: 106: 102: 93: 90: 86: 81: 77: 73: 70: 67: 63: 60: 57: 53: 50: 47: 43: 38: 33: 19: 3050:Cyberattacks 3032: 2762:CryptoLocker 2761: 2516:DoublePulsar 2335:Cyber Anakin 2325:Ryan Ackroyd 2218:Helix Kitten 2213:Hacking Team 2208:Guccifer 2.0 2082:Lizard Squad 1898:Surkov leaks 1827:Hacking Team 1539:. Retrieved 1530: 1520: 1508:. Retrieved 1498: 1486:. Retrieved 1476: 1464:. Retrieved 1455: 1445: 1433:. Retrieved 1419: 1407:. Retrieved 1398: 1389: 1377:. Retrieved 1371:. Symantec. 1348:. Retrieved 1344:the original 1318:. Retrieved 1303: 1291:. Retrieved 1282: 1272: 1260:. Retrieved 1251: 1226:. Retrieved 1219:the original 1214: 1202: 1190:. Retrieved 1179: 1169: 1157:. Retrieved 1153:the original 1146: 1136: 1124:. Retrieved 1116:The Register 1115: 1090:. Retrieved 1081: 1071: 1052: 1040:. Retrieved 1034:. BBC News. 1010:. Retrieved 1001: 991: 979:. Retrieved 962: 952: 940:. Retrieved 931: 922: 910:. Retrieved 906:the original 901: 891: 879:. Retrieved 870: 843:. Retrieved 834: 825: 813:. Retrieved 801:Blue, Violet 780:. Retrieved 772:The Guardian 771: 746:. Retrieved 737: 727: 715:. Retrieved 706: 679:. Retrieved 668: 635:. Retrieved 605:. Retrieved 597:SecurityWeek 596: 570:. Retrieved 560: 550:14 September 548:. Retrieved 534: 522:. Retrieved 513: 503: 491:. Retrieved 483:Ars Technica 482: 409:registry key 402: 395: 383: 371: 341: 337: 328: 298: 289: 282: 255:OpenDocument 240: 217:user profile 210: 183: 163: 152: 109:CryptoLocker 108: 100: 98: 69:Trojan horse 40:CryptoLocker 2998:NetTraveler 2936:LogicLocker 2844:Hidden Tear 2741:Red October 2600:Dragonblood 2510:EternalBlue 2474:Stagefright 2340:George Hotz 2317:Individuals 2067:CyberBerkut 932:Justice.gov 815:23 December 572:5 September 524:24 December 413:Bit Torrent 354:distributed 122:running on 105:cyberattack 78:2 June 2014 59:Cryptovirus 3075:Ransomware 3055:Cybercrime 3039:Categories 2941:Rensenware 2926:BrickerBot 2854:TeslaCrypt 2644:Bad Rabbit 2594:Foreshadow 2498:Cloudbleed 2450:Row hammer 2432:Shellshock 2426:Heartbleed 2414:Evercookie 2390:The Jester 2272:Red Apollo 2232:BlueNorOff 2202:GOSSIPGIRL 2197:Fancy Bear 2187:Elfin Team 2182:DarkMatter 2177:Dark Basin 2162:Bureau 121 2122:Teamp0ison 2047:Hacktivism 1678:DNSChanger 1541:15 October 1466:15 October 1435:22 October 1409:18 January 1379:15 October 1350:18 January 1262:15 October 1215:kent.ac.uk 1192:25 October 1159:25 October 1126:18 October 1092:19 October 981:18 January 881:5 November 845:5 November 782:23 October 748:23 October 740:. Sophos. 717:25 October 681:25 October 607:18 January 493:23 October 458:References 368:Money paid 334:Mitigation 324:indictment 247:extensions 232:public key 186:attachment 112:ransomware 107:using the 49:Ransomware 18:CryptoWall 3045:Blackmail 2972:VPNFilter 2849:Rombertik 2813:FinFisher 2803:DarkHotel 2767:DarkSeoul 2675:Coreflood 2540:BlueBorne 2492:Dirty COW 2406:disclosed 2404:publicly 2242:NSO Group 2172:Cozy Bear 2112:PayPal 14 2055:Anonymous 1929:SHAttered 1673:DigiNotar 1042:18 August 1012:18 August 971:1059-1028 942:18 August 912:18 August 807:. ZDNet. 637:18 August 202:extension 180:Operation 159:backed up 139:encrypted 120:computers 3013:Titanium 2956:XafeCopy 2951:WannaCry 2880:KeRanger 2808:Duqu 2.0 2793:Carbanak 2612:BlueKeep 2588:SigSpoof 2546:Meltdown 2462:WinShock 2444:Rootpipe 2345:Guccifer 2267:Pranknet 2262:PLATINUM 2236:AndAriel 2147:Advanced 2102:NullCrew 2087:LulzRaft 1987:Trustico 1600:Timeline 1535:Archived 1460:Archived 1429:Archived 1403:Archived 1373:Archived 1314:Archived 1287:Archived 1256:Archived 1228:25 March 1186:Archived 1120:Archived 1086:Archived 1060:Archived 1036:Archived 1006:Archived 975:Archived 936:Archived 875:Archived 871:PC World 839:Archived 809:Archived 776:Archived 742:Archived 711:Archived 675:Archived 631:Archived 601:Archived 544:Archived 518:Archived 487:Archived 447:WannaCry 442:PGPCoder 431:See also 425:Symantec 377:December 313:Interpol 271:MoneyPak 225:2048-bit 221:registry 194:ZIP file 128:Internet 88:Platform 2910:X-Agent 2900:Pegasus 2783:Brambul 2746:Shamoon 2690:Kelihos 2680:Alureon 2659:Stuxnet 2629:Malware 2582:TLBleed 2564:Exactis 2552:Spectre 2486:Badlock 2420:iSeeYou 2385:Topiary 2117:RedHack 2107:OurMine 2092:LulzSec 1510:21 July 1503:Staff. 1488:27 June 1481:Staff. 1320:6 April 1293:7 April 1285:. IDG. 421:CAPTCHA 411:named " 379:‍ 344:offline 279:bitcoin 259:AutoCAD 213:payload 147:bitcoin 92:Windows 55:Subtype 27:Malware 2993:Joanap 2946:Triton 2885:Necurs 2875:Jigsaw 2870:Hitler 2839:Dridex 2798:Careto 2721:Dexter 2654:SpyEye 2620:(2019) 2614:(2019) 2608:(2019) 2602:(2019) 2596:(2018) 2590:(2018) 2584:(2018) 2578:(2018) 2572:(2018) 2566:(2018) 2560:(2018) 2554:(2018) 2548:(2018) 2542:(2017) 2536:(2017) 2530:(2017) 2524:(2017) 2518:(2017) 2512:(2017) 2506:(2017) 2500:(2017) 2494:(2016) 2488:(2016) 2482:(2016) 2476:(2015) 2470:(2015) 2468:JASBUG 2464:(2014) 2458:(2014) 2452:(2014) 2446:(2014) 2440:(2014) 2438:POODLE 2434:(2014) 2428:(2014) 2422:(2013) 2416:(2010) 2399:Major 2380:Track2 2302:xDedic 2132:UGNazi 1252:ARNnet 969:  392:Clones 358:Sophos 320:botnet 190:e-mail 173:botnet 155:ransom 135:botnet 116:trojan 103:was a 3008:Tinba 2895:Mirai 2823:Regin 2736:Mahdi 2731:Flame 2716:Carna 2700:Stars 2618:Kr00k 2558:EFAIL 2528:KRACK 2480:DROWN 1605:2020s 1595:2000s 1222:(PDF) 1211:(PDF) 1148:ZDnet 963:Wired 452:Petya 437:Locky 374:ZDNet 275:Ukash 236:proxy 3003:R2D2 2988:Grum 2981:2019 2965:2018 2931:Kirk 2919:2017 2890:MEMZ 2863:2016 2832:2015 2776:2014 2755:2013 2709:2012 2685:Duqu 2668:2011 2637:2010 2375:Sabu 2127:TDO 2072:GNAA 2006:2019 1980:2018 1922:2017 1856:2016 1815:2015 1769:2014 1733:2013 1707:2012 1661:2011 1624:2010 1543:2014 1512:2023 1490:2023 1468:2014 1437:2014 1411:2014 1381:2014 1352:2014 1322:2014 1295:2014 1264:2014 1230:2014 1194:2013 1161:2013 1128:2013 1094:2013 1044:2014 1014:2014 983:2020 967:ISSN 944:2014 914:2014 883:2013 847:2013 817:2013 784:2013 750:2013 719:2013 683:2013 639:2014 609:2014 574:2023 552:2017 526:2013 495:2013 311:and 267:Euro 99:The 45:Type 2726:FBI 2370:MLT 2234:) ( 1531:CSO 835:CSO 514:BBC 309:FBI 284:sic 273:or 265:or 263:USD 228:RSA 198:PDF 3041:: 1533:. 1529:. 1458:. 1454:. 1397:. 1360:^ 1330:^ 1281:. 1254:. 1250:. 1238:^ 1213:. 1184:. 1178:. 1145:. 1118:. 1114:. 1102:^ 1084:. 1080:. 1022:^ 1004:. 1000:. 973:. 965:. 961:. 930:. 900:. 873:. 869:. 855:^ 833:. 792:^ 774:. 770:. 758:^ 736:. 709:. 705:. 691:^ 673:. 667:. 647:^ 617:^ 595:. 582:^ 542:. 516:. 512:. 485:. 481:. 465:^ 253:, 2238:) 2230:( 1575:e 1568:t 1561:v 1545:. 1514:. 1492:. 1470:. 1439:. 1413:. 1383:. 1354:. 1324:. 1297:. 1266:. 1232:. 1196:. 1163:. 1130:. 1096:. 1046:. 1016:. 985:. 946:. 916:. 885:. 849:. 819:. 786:. 752:. 721:. 685:. 641:. 611:. 576:. 554:. 528:. 497:. 34:. 20:)

Index

CryptoWall
Ransomware § Encrypting ransomware
Ransomware
Cryptovirus
Trojan horse
Windows
cyberattack
ransomware
trojan
computers
Microsoft Windows
Internet
Gameover ZeuS
botnet
encrypted
public-key cryptography
bitcoin
ransom
backed up
Operation Tovar
Gameover ZeuS
botnet
attachment
e-mail
ZIP file
PDF
extension
Gameover ZeuS
payload
user profile

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