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Ransom_WCRY.M

June 08, 2017
 ALIASES:

Ransom:Win32/WannaCrypt (Microsoft); Ransom-WannaCry (McAfee); Ransom.Wannacry (Symantec); Trojan-Ransom.Win32.Wanna.zbo (Kaspersky); Troj/Wanna-X (Sophos); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Ransom_r.CFY (AVG)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

4,685,824 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

08 Jun 2017

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

  • %System Root%\msg
  • TaskData
  • %System Root%\TaskData\Data
  • %System Root%\TaskData\Data/Tor
  • %System Root%\TaskData\Tor

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Trojan deletes the following files:

  • 00000000.res
  • %System Root%\pagefile.sys.WNCRY
  • %User Temp%\0.WNCRYT
  • %User Profile%\Sample Pictures\Blue hills.jpg
  • %User Profile%\Sample Pictures\Sunset.jpg
  • %User Profile%\Sample Pictures\Water lilies.jpg
  • %User Profile%\Sample Pictures\Winter.jpg
  • %User Profile%\Sample Music\Beethoven's Symphony No. 9 (Scherzo).wma
  • %User Profile%\Sample Music\New Stories (Highway Blues).wma
  • %User Profile%\Templates\excel.xls
  • %System Root%\m.vbs
  • %System Root%\297021~1.BAT
  • %User Temp%\1.WNCRYT
  • %User Temp%\2.WNCRYT
  • %User Temp%\3.WNCRYT
  • %User Temp%\4.WNCRYT
  • %User Temp%\5.WNCRYT

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\WanaCrypt0r

Dropping Routine

This Trojan drops the following files:

  • %System Root%\b.wnry
  • %System Root%\c.wnry
  • %System Root%\msg/m_bulgarian.wnry
  • %System Root%\msg/m_chinese (simplified).wnry
  • %System Root%\msg/m_chinese (traditional).wnry
  • %System Root%\msg/m_croatian.wnry
  • %System Root%\msg/m_czech.wnry
  • %System Root%\msg/m_danish.wnry
  • %System Root%\msg/m_dutch.wnry
  • %System Root%\msg/m_english.wnry
  • %System Root%\msg/m_filipino.wnry
  • %System Root%\msg/m_finnish.wnry
  • %System Root%\msg/m_french.wnry
  • %System Root%\msg/m_german.wnry
  • %System Root%\msg/m_greek.wnry
  • %System Root%\msg/m_indonesian.wnry
  • %System Root%\msg/m_italian.wnry
  • %System Root%\msg/m_japanese.wnry
  • %System Root%\msg/m_korean.wnry
  • %System Root%\msg/m_latvian.wnry
  • %System Root%\msg/m_norwegian.wnry
  • %System Root%\msg/m_polish.wnry
  • %System Root%\msg/m_portuguese.wnry
  • %System Root%\msg/m_romanian.wnry
  • %System Root%\msg/m_russian.wnry
  • %System Root%\msg/m_slovak.wnry
  • %System Root%\msg/m_spanish.wnry
  • %System Root%\msg/m_swedish.wnry
  • %System Root%\msg/m_turkish.wnry
  • %System Root%\msg/m_vietnamese.wnry
  • %System Root%\r.wnry
  • %System Root%\s.wnry
  • %System Root%\t.wnry
  • %System Root%\taskdl.exe
  • %System Root%\taskse.exe
  • %System Root%\u.wnry
  • c.wnry
  • 00000000.pky
  • 297021494880571.bat
  • @Please_Read_Me@.txt
  • %Desktop%\~SD2C.tmp
  • %User Profile%\My Documents\~SD2F.tmp
  • %User Profile%\My Music\~SD32.tmp
  • %User Profile%\My Pictures\~SD35.tmp
  • %Desktop%\~SD38.tmp
  • %Desktop%\~SD3B.tmp
  • %User Profile%\Documents\~SD3E.tmp
  • %User Profile%\My Music\~SD41.tmp
  • %User Profile%\My Playlists\~SD44.tmp
  • %User Profile%\Sample Music\~SD47.tmp
  • %User Profile%\Sample Playlists\~SD4B.tmp
  • %User Profile%\0008044E\~SD4E.tmp
  • %User Profile%\My Pictures\~SD51.tmp
  • %User Profile%\Sample Pictures\~SD54.tmp
  • %User Profile%\Sample Pictures\Blue hills.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Sunset.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Water lilies.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Winter.jpg.WNCRYT
  • %User Profile%\My Videos\~SD5C.tmp
  • %User Profile%\Sample Music\Beethoven's Symphony No. 9 (Scherzo).wma.WNCRYT
  • %User Profile%\Sample Music\New Stories (Highway Blues).wma.WNCRYT
  • %User Profile%\My Documents\~SD61.tmp
  • %System Root%\~SD64.tmp
  • %System Root%\Documents and Settings\~SD67.tmp
  • %User Profile%\~SD6A.tmp
  • %User Profile%\Application Data\~SD6D.tmp
  • %User Profile%\Adobe\~SD70.tmp
  • %User Profile%\Acrobat\~SD73.tmp
  • %User Profile%\10.0\~SD76.tmp
  • %User Profile%\Replicate\~SD79.tmp
  • %User Profile%\Security\~SD7C.tmp
  • %User Profile%\Setup\~SD7F.tmp
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\~SD82.tmp
  • %User Profile%\Microsoft\~SD85.tmp
  • %User Profile%\Crypto\~SD88.tmp
  • %User Profile%\DSS\~SD8B.tmp
  • %User Profile%\MachineKeys\~SD8E.tmp
  • %User Profile%\RSA\~SD91.tmp
  • %User Profile%\MachineKeys\~SD94.tmp
  • %User Profile%\S-1-5-18\~SD97.tmp
  • %User Profile%\HTML Help\~SD9A.tmp
  • %User Profile%\Media Index\~SD9D.tmp
  • %User Profile%\Media Player\~SDA0.tmp
  • %User Profile%\Network\~SDA3.tmp
  • %User Profile%\Connections\~SDA6.tmp
  • %User Profile%\Cm\~SDA9.tmp
  • %User Profile%\Pbk\~SDAC.tmp
  • %User Profile%\User Account Pictures\~SDAF.tmp
  • %User Profile%\Default Pictures\~SDB3.tmp
  • %Desktop%\~SDB6.tmp
  • %User Profile%\Documents\~SDB9.tmp
  • %User Profile%\My Music\~SDBC.tmp
  • %User Profile%\My Playlists\~SDBF.tmp
  • %User Profile%\Sample Music\~SDC2.tmp
  • %User Profile%\Sample Playlists\~SDC5.tmp
  • %User Profile%\0008044E\~SDC9.tmp
  • %User Profile%\My Pictures\~SDCC.tmp
  • %User Profile%\Sample Pictures\~SDCF.tmp
  • %User Profile%\My Videos\~SDD2.tmp
  • %User Profile%\DRM\~SDD5.tmp
  • %Favorites%\~SDD8.tmp
  • %Start Menu%\~SDDB.tmp
  • %Start Menu%\Programs\~SDDE.tmp
  • %Start Menu%\Programs\Accessories\~SDE1.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SDE4.tmp
  • %Start Menu%\Programs\Accessories\Communications\~SDE7.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SDEA.tmp
  • %Start Menu%\Programs\Accessories\System Tools\~SDED.tmp
  • %Start Menu%\Programs\Administrative Tools\~SDF0.tmp
  • %Start Menu%\Programs\Games\~SDF3.tmp
  • %Common Startup%\~SDF6.tmp
  • %Start Menu%\Programs\WinPcap\~SDF9.tmp
  • %User Profile%\Templates\~SDFC.tmp
  • %User Profile%\~SDFF.tmp
  • %User Profile%\Application Data\~SD102.tmp
  • %User Profile%\Microsoft\~SD105.tmp
  • %User Profile%\Internet Explorer\~SD108.tmp
  • %User Profile%\Media Player\~SD10C.tmp
  • %User Profile%\SystemCertificates\~SD10F.tmp
  • %User Profile%\My\~SD112.tmp
  • %User Profile%\Certificates\~SD115.tmp
  • %User Profile%\CRLs\~SD118.tmp
  • %User Profile%\CTLs\~SD11B.tmp
  • %User Profile%\Cookies\~SD11E.tmp
  • %Desktop%\~SD121.tmp
  • %Favorites%\~SD124.tmp
  • %User Profile%\Local Settings\~SD127.tmp
  • %Application Data%\~SD12A.tmp
  • %Application Data%\Microsoft\~SD12D.tmp
  • %Application Data%\Microsoft\Media Player\~SD130.tmp
  • %Application Data%\Microsoft\Windows Media\~SD133.tmp
  • %Application Data%\Microsoft\Windows Media\9.0\~SD136.tmp
  • %User Profile%\History\~SD139.tmp
  • %User Profile%\History.IE5\~SD13C.tmp
  • %User Profile%\My Documents\~SD13F.tmp
  • %User Profile%\NetHood\~SD142.tmp
  • %User Profile%\PrintHood\~SD145.tmp
  • %User Profile%\Recent\~SD148.tmp
  • %User Profile%\SendTo\~SD14B.tmp
  • %Start Menu%\~SD14E.tmp
  • %Start Menu%\Programs\~SD151.tmp
  • %Start Menu%\Programs\Accessories\~SD154.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SD157.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SD15A.tmp
  • %User Startup%\~SD15D.tmp
  • %User Profile%\Templates\~SD160.tmp
  • %User Profile%\Templates\excel.xls.WNCRYT
  • %User Profile%\Templates\excel4.xls.WNCRYT
  • %User Profile%\Templates\powerpnt.ppt.WNCRYT
  • %User Profile%\Templates\winword.doc.WNCRYT
  • %User Profile%\Templates\winword2.doc.WNCRYT
  • %User Profile%\~SD16A.tmp
  • %User Profile%\Application Data\~SD16D.tmp
  • %User Profile%\Microsoft\~SD170.tmp
  • %User Profile%\Credentials\~SD173.tmp
  • %User Profile%\S-1-5-19\~SD176.tmp
  • %User Profile%\Internet Explorer\~SD179.tmp
  • %User Profile%\Media Player\~SD17C.tmp
  • %User Profile%\SystemCertificates\~SD17F.tmp
  • %User Profile%\My\~SD182.tmp
  • %User Profile%\Certificates\~SD185.tmp
  • %User Profile%\CRLs\~SD188.tmp
  • %User Profile%\CTLs\~SD18B.tmp
  • %User Profile%\Cookies\~SD18E.tmp
  • %User Profile%\Local Settings\~SD191.tmp
  • %Application Data%\~SD194.tmp
  • %Application Data%\Microsoft\~SD197.tmp
  • %Application Data%\Microsoft\Credentials\~SD19A.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-19\~SD19D.tmp
  • %Application Data%\Microsoft\Windows\~SD1A0.tmp
  • %User Profile%\History\~SD1A3.tmp
  • %User Profile%\History.IE5\~SD1A6.tmp
  • %User Profile%\~SD1A9.tmp
  • %User Profile%\Application Data\~SD1AC.tmp
  • %User Profile%\Microsoft\~SD1AF.tmp
  • %User Profile%\Credentials\~SD1B2.tmp
  • %User Profile%\S-1-5-20\~SD1B5.tmp
  • %User Profile%\Internet Explorer\~SD1B8.tmp
  • %User Profile%\Media Player\~SD1BB.tmp
  • %User Profile%\SystemCertificates\~SD1BE.tmp
  • %User Profile%\My\~SD1C1.tmp
  • %User Profile%\Certificates\~SD1C4.tmp
  • %User Profile%\CRLs\~SD1C7.tmp
  • %User Profile%\CTLs\~SD1CA.tmp
  • %User Profile%\Cookies\~SD1CD.tmp
  • %User Profile%\Local Settings\~SD1D0.tmp
  • %Application Data%\~SD1D3.tmp
  • %Application Data%\Microsoft\~SD1D6.tmp
  • %Application Data%\Microsoft\Credentials\~SD1D9.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-20\~SD1DC.tmp
  • %Application Data%\Microsoft\Windows\~SD1DF.tmp
  • %User Profile%\History\~SD1E2.tmp
  • %User Profile%\History.IE5\~SD1E5.tmp
  • %User Profile%\~SD1E8.tmp
  • %User Profile%\Application Data\~SD1EB.tmp
  • %User Profile%\Identities\~SD1EE.tmp
  • %User Profile%\{8A24C031-62FE-4BF5-94F0-BFD4FBCD674B}\~SD1F1.tmp
  • %User Profile%\Microsoft\~SD1F4.tmp
  • %User Profile%\Credentials\~SD1F7.tmp
  • %User Profile%\S-1-5-21-1645522239-1292428093-682003330-1003\~SD1FA.tmp
  • %User Profile%\Internet Explorer\~SD1FD.tmp
  • %User Profile%\Internet Explorer\brndlog.txt.WNCRYT
  • %User Profile%\Quick Launch\~SD202.tmp
  • %User Profile%\Media Player\~SD205.tmp
  • %User Profile%\MMC\~SD208.tmp
  • %User Profile%\SystemCertificates\~SD20B.tmp
  • %User Profile%\My\~SD20E.tmp
  • %User Profile%\Certificates\~SD211.tmp
  • %User Profile%\CRLs\~SD214.tmp
  • %User Profile%\CTLs\~SD217.tmp
  • %User Profile%\Windows\~SD21A.tmp
  • %User Profile%\Themes\~SD21D.tmp
  • %User Profile%\Cookies\~SD220.tmp
  • %Desktop%\~SD225.tmp
  • %Favorites%\~SD228.tmp
  • %Favorites%\Links\~SD22B.tmp
  • %User Profile%\Local Settings\~SD22E.tmp
  • %Application Data%\~SD231.tmp
  • %Application Data%\Microsoft\~SD235.tmp
  • %Application Data%\Microsoft\CD Burning\~SD239.tmp
  • %Application Data%\Microsoft\Credentials\~SD23C.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-21-1645522239-1292428093-682003330-1003\~SD23F.tmp
  • %Application Data%\Microsoft\Internet Explorer\~SD242.tmp
  • %Application Data%\Microsoft\Media Player\~SD245.tmp
  • %Application Data%\Microsoft\Windows\~SD248.tmp
  • %Application Data%\Microsoft\Windows Media\~SD24B.tmp
  • %Application Data%\Microsoft\Windows Media\9.0\~SD24E.tmp
  • %User Profile%\History\~SD251.tmp
  • %User Profile%\History.IE5\~SD254.tmp
  • %User Profile%\MSHist012013061320130614\~SD257.tmp
  • %User Profile%\My Documents\~SD25A.tmp
  • %User Profile%\My Music\~SD25D.tmp
  • %User Profile%\My Pictures\~SD260.tmp
  • %User Profile%\NetHood\~SD263.tmp
  • %User Profile%\PrintHood\~SD266.tmp
  • %User Profile%\Recent\~SD269.tmp
  • %User Profile%\SendTo\~SD26C.tmp
  • %Start Menu%\~SD26F.tmp
  • %Start Menu%\Programs\~SD272.tmp
  • %Start Menu%\Programs\Accessories\~SD275.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SD278.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SD27B.tmp
  • %Start Menu%\Programs\Administrative Tools\~SD27E.tmp
  • %User Startup%\~SD281.tmp
  • %User Profile%\Templates\~SD284.tmp
  • %System Root%\msg\~SD28E.tmp
  • %User Profile%\User Account Pictures\guest.bmp.WNCRYT
  • %User Profile%\User Account Pictures\Wilbert.bmp.WNCRYT
  • %User Profile%\Default Pictures\airplane.bmp.WNCRYT
  • %User Profile%\Default Pictures\astronaut.bmp.WNCRYT
  • %User Profile%\Default Pictures\ball.bmp.WNCRYT
  • %User Profile%\Default Pictures\beach.bmp.WNCRYT
  • %User Profile%\Default Pictures\butterfly.bmp.WNCRYT
  • %User Profile%\Default Pictures\car.bmp.WNCRYT
  • %User Profile%\Default Pictures\cat.bmp.WNCRYT
  • %User Profile%\Default Pictures\chess.bmp.WNCRYT
  • %User Profile%\Default Pictures\dirt bike.bmp.WNCRYT
  • %User Profile%\Default Pictures\dog.bmp.WNCRYT
  • %User Profile%\Default Pictures\drip.bmp.WNCRYT
  • %User Profile%\Default Pictures\duck.bmp.WNCRYT
  • %User Profile%\Default Pictures\fish.bmp.WNCRYT
  • %User Profile%\Default Pictures\frog.bmp.WNCRYT
  • %User Profile%\Default Pictures\guitar.bmp.WNCRYT
  • %User Profile%\Default Pictures\horses.bmp.WNCRYT
  • %User Profile%\Default Pictures\kick.bmp.WNCRYT
  • %User Profile%\Default Pictures\lift-off.bmp.WNCRYT
  • %User Profile%\Default Pictures\palm tree.bmp.WNCRYT
  • %User Profile%\Default Pictures\pink flower.bmp.WNCRYT
  • %User Profile%\Default Pictures\red flower.bmp.WNCRYT
  • %User Profile%\Default Pictures\skater.bmp.WNCRYT
  • %User Profile%\Default Pictures\snowflake.bmp.WNCRYT
  • %User Profile%\Templates\quattro.wb2.WNCRYT
  • %Application Data%\IconCache.db.WNCRYT
  • %Application Data%\Microsoft\Wallpaper1.bmp.WNCRYT
  • %System Root%\297021494880571.bat.WNCRYT
  • %System Root%\AUTOEXEC.BAT.WNCRYT
  • %User Profile%\Internet Explorer\brndlog.bak.WNCRYT
  • %User Profile%\Templates\sndrec.wav.WNCRYT
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@bing[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@msn[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.WNCRYT
  • %User Temp%\hibsys.WNCRYT
  • m.vbs
  • %System Root%\@WanaDecryptor@.exe.lnk
  • %System Root%\TaskData\Tor/libeay32.dll
  • %System Root%\TaskData\Tor/libevent-2-0-5.dll
  • @WanaDecryptor@.exe
  • %User Profile%\Sample Music\@Please_Read_Me@.txt
  • %User Profile%\Sample Music\@WanaDecryptor@.exe.lnk
  • %User Profile%\Sample Pictures\@Please_Read_Me@.txt
  • %User Profile%\Sample Pictures\@WanaDecryptor@.exe.lnk
  • %System Root%\@Please_Read_Me@.txt
  • %System Root%\@WanaDecryptor@.exe
  • %User Profile%\User Account Pictures\@Please_Read_Me@.txt
  • %User Profile%\User Account Pictures\@WanaDecryptor@.exe.lnk
  • %User Profile%\Internet Explorer\@Please_Read_Me@.txt
  • %User Profile%\Internet Explorer\@WanaDecryptor@.exe.lnk
  • %User Profile%\Templates\@Please_Read_Me@.txt
  • %User Profile%\Templates\@WanaDecryptor@.exe
  • %User Profile%\Cookies\@Please_Read_Me@.txt
  • %User Profile%\Cookies\@WanaDecryptor@.exe
  • %Application Data%\@Please_Read_Me@.txt
  • %Application Data%\@WanaDecryptor@.exe.lnk
  • %Application Data%\Microsoft\@Please_Read_Me@.txt
  • %Application Data%\Microsoft\@WanaDecryptor@.exe.lnk
  • %Desktop%\@WanaDecryptor@.bmp
  • %Desktop%\@WanaDecryptor@.exe

Other Details

This Trojan connects to the following possibly malicious URL:

  • {BLOCKED}0.1

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software
    • WanaCrypt0r

Step 3

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System Root%\b.wnry
  • %System Root%\c.wnry
  • %System Root%\msg/m_bulgarian.wnry
  • %System Root%\msg/m_chinese (simplified).wnry
  • %System Root%\msg/m_chinese (traditional).wnry
  • %System Root%\msg/m_croatian.wnry
  • %System Root%\msg/m_czech.wnry
  • %System Root%\msg/m_danish.wnry
  • %System Root%\msg/m_dutch.wnry
  • %System Root%\msg/m_english.wnry
  • %System Root%\msg/m_filipino.wnry
  • %System Root%\msg/m_finnish.wnry
  • %System Root%\msg/m_french.wnry
  • %System Root%\msg/m_german.wnry
  • %System Root%\msg/m_greek.wnry
  • %System Root%\msg/m_indonesian.wnry
  • %System Root%\msg/m_italian.wnry
  • %System Root%\msg/m_japanese.wnry
  • %System Root%\msg/m_korean.wnry
  • %System Root%\msg/m_latvian.wnry
  • %System Root%\msg/m_norwegian.wnry
  • %System Root%\msg/m_polish.wnry
  • %System Root%\msg/m_portuguese.wnry
  • %System Root%\msg/m_romanian.wnry
  • %System Root%\msg/m_russian.wnry
  • %System Root%\msg/m_slovak.wnry
  • %System Root%\msg/m_spanish.wnry
  • %System Root%\msg/m_swedish.wnry
  • %System Root%\msg/m_turkish.wnry
  • %System Root%\msg/m_vietnamese.wnry
  • %System Root%\r.wnry
  • %System Root%\s.wnry
  • %System Root%\t.wnry
  • %System Root%\taskdl.exe
  • %System Root%\taskse.exe
  • %System Root%\u.wnry
  • c.wnry
  • 00000000.pky
  • 297021494880571.bat
  • @Please_Read_Me@.txt
  • %Desktop%\~SD2C.tmp
  • %User Profile%\My Documents\~SD2F.tmp
  • %User Profile%\My Music\~SD32.tmp
  • %User Profile%\My Pictures\~SD35.tmp
  • %Desktop%\~SD38.tmp
  • %Desktop%\~SD3B.tmp
  • %User Profile%\Documents\~SD3E.tmp
  • %User Profile%\My Music\~SD41.tmp
  • %User Profile%\My Playlists\~SD44.tmp
  • %User Profile%\Sample Music\~SD47.tmp
  • %User Profile%\Sample Playlists\~SD4B.tmp
  • %User Profile%\0008044E\~SD4E.tmp
  • %User Profile%\My Pictures\~SD51.tmp
  • %User Profile%\Sample Pictures\~SD54.tmp
  • %User Profile%\Sample Pictures\Blue hills.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Sunset.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Water lilies.jpg.WNCRYT
  • %User Profile%\Sample Pictures\Winter.jpg.WNCRYT
  • %User Profile%\My Videos\~SD5C.tmp
  • %User Profile%\Sample Music\Beethoven's Symphony No. 9 (Scherzo).wma.WNCRYT
  • %User Profile%\Sample Music\New Stories (Highway Blues).wma.WNCRYT
  • %User Profile%\My Documents\~SD61.tmp
  • %System Root%\~SD64.tmp
  • %System Root%\Documents and Settings\~SD67.tmp
  • %User Profile%\~SD6A.tmp
  • %User Profile%\Application Data\~SD6D.tmp
  • %User Profile%\Adobe\~SD70.tmp
  • %User Profile%\Acrobat\~SD73.tmp
  • %User Profile%\10.0\~SD76.tmp
  • %User Profile%\Replicate\~SD79.tmp
  • %User Profile%\Security\~SD7C.tmp
  • %User Profile%\Setup\~SD7F.tmp
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\~SD82.tmp
  • %User Profile%\Microsoft\~SD85.tmp
  • %User Profile%\Crypto\~SD88.tmp
  • %User Profile%\DSS\~SD8B.tmp
  • %User Profile%\MachineKeys\~SD8E.tmp
  • %User Profile%\RSA\~SD91.tmp
  • %User Profile%\MachineKeys\~SD94.tmp
  • %User Profile%\S-1-5-18\~SD97.tmp
  • %User Profile%\HTML Help\~SD9A.tmp
  • %User Profile%\Media Index\~SD9D.tmp
  • %User Profile%\Media Player\~SDA0.tmp
  • %User Profile%\Network\~SDA3.tmp
  • %User Profile%\Connections\~SDA6.tmp
  • %User Profile%\Cm\~SDA9.tmp
  • %User Profile%\Pbk\~SDAC.tmp
  • %User Profile%\User Account Pictures\~SDAF.tmp
  • %User Profile%\Default Pictures\~SDB3.tmp
  • %Desktop%\~SDB6.tmp
  • %User Profile%\Documents\~SDB9.tmp
  • %User Profile%\My Music\~SDBC.tmp
  • %User Profile%\My Playlists\~SDBF.tmp
  • %User Profile%\Sample Music\~SDC2.tmp
  • %User Profile%\Sample Playlists\~SDC5.tmp
  • %User Profile%\0008044E\~SDC9.tmp
  • %User Profile%\My Pictures\~SDCC.tmp
  • %User Profile%\Sample Pictures\~SDCF.tmp
  • %User Profile%\My Videos\~SDD2.tmp
  • %User Profile%\DRM\~SDD5.tmp
  • %Favorites%\~SDD8.tmp
  • %Start Menu%\~SDDB.tmp
  • %Start Menu%\Programs\~SDDE.tmp
  • %Start Menu%\Programs\Accessories\~SDE1.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SDE4.tmp
  • %Start Menu%\Programs\Accessories\Communications\~SDE7.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SDEA.tmp
  • %Start Menu%\Programs\Accessories\System Tools\~SDED.tmp
  • %Start Menu%\Programs\Administrative Tools\~SDF0.tmp
  • %Start Menu%\Programs\Games\~SDF3.tmp
  • %Common Startup%\~SDF6.tmp
  • %Start Menu%\Programs\WinPcap\~SDF9.tmp
  • %User Profile%\Templates\~SDFC.tmp
  • %User Profile%\~SDFF.tmp
  • %User Profile%\Application Data\~SD102.tmp
  • %User Profile%\Microsoft\~SD105.tmp
  • %User Profile%\Internet Explorer\~SD108.tmp
  • %User Profile%\Media Player\~SD10C.tmp
  • %User Profile%\SystemCertificates\~SD10F.tmp
  • %User Profile%\My\~SD112.tmp
  • %User Profile%\Certificates\~SD115.tmp
  • %User Profile%\CRLs\~SD118.tmp
  • %User Profile%\CTLs\~SD11B.tmp
  • %User Profile%\Cookies\~SD11E.tmp
  • %Desktop%\~SD121.tmp
  • %Favorites%\~SD124.tmp
  • %User Profile%\Local Settings\~SD127.tmp
  • %Application Data%\~SD12A.tmp
  • %Application Data%\Microsoft\~SD12D.tmp
  • %Application Data%\Microsoft\Media Player\~SD130.tmp
  • %Application Data%\Microsoft\Windows Media\~SD133.tmp
  • %Application Data%\Microsoft\Windows Media\9.0\~SD136.tmp
  • %User Profile%\History\~SD139.tmp
  • %User Profile%\History.IE5\~SD13C.tmp
  • %User Profile%\My Documents\~SD13F.tmp
  • %User Profile%\NetHood\~SD142.tmp
  • %User Profile%\PrintHood\~SD145.tmp
  • %User Profile%\Recent\~SD148.tmp
  • %User Profile%\SendTo\~SD14B.tmp
  • %Start Menu%\~SD14E.tmp
  • %Start Menu%\Programs\~SD151.tmp
  • %Start Menu%\Programs\Accessories\~SD154.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SD157.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SD15A.tmp
  • %User Startup%\~SD15D.tmp
  • %User Profile%\Templates\~SD160.tmp
  • %User Profile%\Templates\excel.xls.WNCRYT
  • %User Profile%\Templates\excel4.xls.WNCRYT
  • %User Profile%\Templates\powerpnt.ppt.WNCRYT
  • %User Profile%\Templates\winword.doc.WNCRYT
  • %User Profile%\Templates\winword2.doc.WNCRYT
  • %User Profile%\~SD16A.tmp
  • %User Profile%\Application Data\~SD16D.tmp
  • %User Profile%\Microsoft\~SD170.tmp
  • %User Profile%\Credentials\~SD173.tmp
  • %User Profile%\S-1-5-19\~SD176.tmp
  • %User Profile%\Internet Explorer\~SD179.tmp
  • %User Profile%\Media Player\~SD17C.tmp
  • %User Profile%\SystemCertificates\~SD17F.tmp
  • %User Profile%\My\~SD182.tmp
  • %User Profile%\Certificates\~SD185.tmp
  • %User Profile%\CRLs\~SD188.tmp
  • %User Profile%\CTLs\~SD18B.tmp
  • %User Profile%\Cookies\~SD18E.tmp
  • %User Profile%\Local Settings\~SD191.tmp
  • %Application Data%\~SD194.tmp
  • %Application Data%\Microsoft\~SD197.tmp
  • %Application Data%\Microsoft\Credentials\~SD19A.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-19\~SD19D.tmp
  • %Application Data%\Microsoft\Windows\~SD1A0.tmp
  • %User Profile%\History\~SD1A3.tmp
  • %User Profile%\History.IE5\~SD1A6.tmp
  • %User Profile%\~SD1A9.tmp
  • %User Profile%\Application Data\~SD1AC.tmp
  • %User Profile%\Microsoft\~SD1AF.tmp
  • %User Profile%\Credentials\~SD1B2.tmp
  • %User Profile%\S-1-5-20\~SD1B5.tmp
  • %User Profile%\Internet Explorer\~SD1B8.tmp
  • %User Profile%\Media Player\~SD1BB.tmp
  • %User Profile%\SystemCertificates\~SD1BE.tmp
  • %User Profile%\My\~SD1C1.tmp
  • %User Profile%\Certificates\~SD1C4.tmp
  • %User Profile%\CRLs\~SD1C7.tmp
  • %User Profile%\CTLs\~SD1CA.tmp
  • %User Profile%\Cookies\~SD1CD.tmp
  • %User Profile%\Local Settings\~SD1D0.tmp
  • %Application Data%\~SD1D3.tmp
  • %Application Data%\Microsoft\~SD1D6.tmp
  • %Application Data%\Microsoft\Credentials\~SD1D9.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-20\~SD1DC.tmp
  • %Application Data%\Microsoft\Windows\~SD1DF.tmp
  • %User Profile%\History\~SD1E2.tmp
  • %User Profile%\History.IE5\~SD1E5.tmp
  • %User Profile%\~SD1E8.tmp
  • %User Profile%\Application Data\~SD1EB.tmp
  • %User Profile%\Identities\~SD1EE.tmp
  • %User Profile%\{8A24C031-62FE-4BF5-94F0-BFD4FBCD674B}\~SD1F1.tmp
  • %User Profile%\Microsoft\~SD1F4.tmp
  • %User Profile%\Credentials\~SD1F7.tmp
  • %User Profile%\S-1-5-21-1645522239-1292428093-682003330-1003\~SD1FA.tmp
  • %User Profile%\Internet Explorer\~SD1FD.tmp
  • %User Profile%\Internet Explorer\brndlog.txt.WNCRYT
  • %User Profile%\Quick Launch\~SD202.tmp
  • %User Profile%\Media Player\~SD205.tmp
  • %User Profile%\MMC\~SD208.tmp
  • %User Profile%\SystemCertificates\~SD20B.tmp
  • %User Profile%\My\~SD20E.tmp
  • %User Profile%\Certificates\~SD211.tmp
  • %User Profile%\CRLs\~SD214.tmp
  • %User Profile%\CTLs\~SD217.tmp
  • %User Profile%\Windows\~SD21A.tmp
  • %User Profile%\Themes\~SD21D.tmp
  • %User Profile%\Cookies\~SD220.tmp
  • %Desktop%\~SD225.tmp
  • %Favorites%\~SD228.tmp
  • %Favorites%\Links\~SD22B.tmp
  • %User Profile%\Local Settings\~SD22E.tmp
  • %Application Data%\~SD231.tmp
  • %Application Data%\Microsoft\~SD235.tmp
  • %Application Data%\Microsoft\CD Burning\~SD239.tmp
  • %Application Data%\Microsoft\Credentials\~SD23C.tmp
  • %Application Data%\Microsoft\Credentials\S-1-5-21-1645522239-1292428093-682003330-1003\~SD23F.tmp
  • %Application Data%\Microsoft\Internet Explorer\~SD242.tmp
  • %Application Data%\Microsoft\Media Player\~SD245.tmp
  • %Application Data%\Microsoft\Windows\~SD248.tmp
  • %Application Data%\Microsoft\Windows Media\~SD24B.tmp
  • %Application Data%\Microsoft\Windows Media\9.0\~SD24E.tmp
  • %User Profile%\History\~SD251.tmp
  • %User Profile%\History.IE5\~SD254.tmp
  • %User Profile%\MSHist012013061320130614\~SD257.tmp
  • %User Profile%\My Documents\~SD25A.tmp
  • %User Profile%\My Music\~SD25D.tmp
  • %User Profile%\My Pictures\~SD260.tmp
  • %User Profile%\NetHood\~SD263.tmp
  • %User Profile%\PrintHood\~SD266.tmp
  • %User Profile%\Recent\~SD269.tmp
  • %User Profile%\SendTo\~SD26C.tmp
  • %Start Menu%\~SD26F.tmp
  • %Start Menu%\Programs\~SD272.tmp
  • %Start Menu%\Programs\Accessories\~SD275.tmp
  • %Start Menu%\Programs\Accessories\Accessibility\~SD278.tmp
  • %Start Menu%\Programs\Accessories\Entertainment\~SD27B.tmp
  • %Start Menu%\Programs\Administrative Tools\~SD27E.tmp
  • %User Startup%\~SD281.tmp
  • %User Profile%\Templates\~SD284.tmp
  • %System Root%\msg\~SD28E.tmp
  • %User Profile%\User Account Pictures\guest.bmp.WNCRYT
  • %User Profile%\User Account Pictures\Wilbert.bmp.WNCRYT
  • %User Profile%\Default Pictures\airplane.bmp.WNCRYT
  • %User Profile%\Default Pictures\astronaut.bmp.WNCRYT
  • %User Profile%\Default Pictures\ball.bmp.WNCRYT
  • %User Profile%\Default Pictures\beach.bmp.WNCRYT
  • %User Profile%\Default Pictures\butterfly.bmp.WNCRYT
  • %User Profile%\Default Pictures\car.bmp.WNCRYT
  • %User Profile%\Default Pictures\cat.bmp.WNCRYT
  • %User Profile%\Default Pictures\chess.bmp.WNCRYT
  • %User Profile%\Default Pictures\dirt bike.bmp.WNCRYT
  • %User Profile%\Default Pictures\dog.bmp.WNCRYT
  • %User Profile%\Default Pictures\drip.bmp.WNCRYT
  • %User Profile%\Default Pictures\duck.bmp.WNCRYT
  • %User Profile%\Default Pictures\fish.bmp.WNCRYT
  • %User Profile%\Default Pictures\frog.bmp.WNCRYT
  • %User Profile%\Default Pictures\guitar.bmp.WNCRYT
  • %User Profile%\Default Pictures\horses.bmp.WNCRYT
  • %User Profile%\Default Pictures\kick.bmp.WNCRYT
  • %User Profile%\Default Pictures\lift-off.bmp.WNCRYT
  • %User Profile%\Default Pictures\palm tree.bmp.WNCRYT
  • %User Profile%\Default Pictures\pink flower.bmp.WNCRYT
  • %User Profile%\Default Pictures\red flower.bmp.WNCRYT
  • %User Profile%\Default Pictures\skater.bmp.WNCRYT
  • %User Profile%\Default Pictures\snowflake.bmp.WNCRYT
  • %User Profile%\Templates\quattro.wb2.WNCRYT
  • %Application Data%\IconCache.db.WNCRYT
  • %Application Data%\Microsoft\Wallpaper1.bmp.WNCRYT
  • %System Root%\297021494880571.bat.WNCRYT
  • %System Root%\AUTOEXEC.BAT.WNCRYT
  • %User Profile%\Internet Explorer\brndlog.bak.WNCRYT
  • %User Profile%\Templates\sndrec.wav.WNCRYT
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@bing[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@msn[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.WNCRYT
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.WNCRYT
  • %User Temp%\hibsys.WNCRYT
  • m.vbs
  • %System Root%\@WanaDecryptor@.exe.lnk
  • %System Root%\TaskData\Tor/libeay32.dll
  • %System Root%\TaskData\Tor/libevent-2-0-5.dll
  • @WanaDecryptor@.exe
  • %User Profile%\Sample Music\@Please_Read_Me@.txt
  • %User Profile%\Sample Music\@WanaDecryptor@.exe.lnk
  • %User Profile%\Sample Pictures\@Please_Read_Me@.txt
  • %User Profile%\Sample Pictures\@WanaDecryptor@.exe.lnk
  • %System Root%\@Please_Read_Me@.txt
  • %System Root%\@WanaDecryptor@.exe
  • %User Profile%\User Account Pictures\@Please_Read_Me@.txt
  • %User Profile%\User Account Pictures\@WanaDecryptor@.exe.lnk
  • %User Profile%\Internet Explorer\@Please_Read_Me@.txt
  • %User Profile%\Internet Explorer\@WanaDecryptor@.exe.lnk
  • %User Profile%\Templates\@Please_Read_Me@.txt
  • %User Profile%\Templates\@WanaDecryptor@.exe
  • %User Profile%\Cookies\@Please_Read_Me@.txt
  • %User Profile%\Cookies\@WanaDecryptor@.exe
  • %Application Data%\@Please_Read_Me@.txt
  • %Application Data%\@WanaDecryptor@.exe.lnk
  • %Application Data%\Microsoft\@Please_Read_Me@.txt
  • %Application Data%\Microsoft\@WanaDecryptor@.exe.lnk
  • %Desktop%\@WanaDecryptor@.bmp
  • %Desktop%\@WanaDecryptor@.exe

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System Root%\msg
  • TaskData
  • %System Root%\TaskData\Data
  • %System Root%\TaskData\Data/Tor
  • %System Root%\TaskData\Tor

Step 5

Scan your computer with your Trend Micro product to delete files detected as Ransom_WCRY.M. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 6

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • 00000000.res
  • %System Root%\pagefile.sys.WNCRY
  • %User Temp%\0.WNCRYT
  • %User Profile%\Sample Pictures\Blue hills.jpg
  • %User Profile%\Sample Pictures\Sunset.jpg
  • %User Profile%\Sample Pictures\Water lilies.jpg
  • %User Profile%\Sample Pictures\Winter.jpg
  • %User Profile%\Sample Music\Beethoven's Symphony No. 9 (Scherzo).wma
  • %User Profile%\Sample Music\New Stories (Highway Blues).wma
  • %User Profile%\Templates\excel.xls
  • %System Root%\m.vbs
  • %System Root%\297021~1.BAT
  • %User Temp%\1.WNCRYT
  • %User Temp%\2.WNCRYT
  • %User Temp%\3.WNCRYT
  • %User Temp%\4.WNCRYT
  • %User Temp%\5.WNCRYT


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