Analysis
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max time kernel
177s -
max time network
29s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
20-02-2022 05:20
Static task
static1
Behavioral task
behavioral1
Sample
7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe
Resource
win10v2004-en-20220113
General
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Target
7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe
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Size
170KB
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MD5
ad6320f406222e3b6d6e717146370472
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SHA1
74fd06ff2b99d7df9044b4ea04312ffcb76e6e67
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SHA256
7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305
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SHA512
38e15da45d188ca86872780754c26efc89610e8adf14a88e2271af7226f01757e085ce2938a4ea5f1439453cbf5cb7091ce3a21e36488159f82ca4f2b64989d5
Malware Config
Extracted
C:\RyukReadMe.txt
ryuk
WayneEvenson@protonmail.com
WayneEvenson@tutanota.com
14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe" reg.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jre7\lib\fonts\LucidaBrightDemiItalic.ttf taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ipshrv.xml taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OFFICE14\Cultures\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes.nl_ja_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\.lastModified taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\lib\deployed\jdk16\windows-amd64\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-host.xml taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Push\NavigationLeft_ButtonGraphic.png taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\ResizingPanels\NavigationLeft_SelectionSubpicture.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\classfile_constants.h taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Recife taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\UCT taskhost.exe File opened for modification C:\Program Files\Common Files\Services\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\com-sun-tools-visualvm-profiling.jar taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\scene_button_style_default_Thumbnail.bmp taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Dushanbe taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_ja_4.4.0.v20140623020002\feature.properties taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jre7\lib\deploy\ffjcext.zip taskhost.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Africa\Bissau taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\NavigationRight_SelectionSubpicture.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\jdwpTransport.h taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Australia\Lindeman taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.ssl.feature_1.0.0.v20140827-1444\META-INF\MANIFEST.MF taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.touchpoint.natives.nl_ja_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\lib\deployed\jdk15\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\NavigationUp_SelectionSubpicture.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyclient.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Lisbon taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Zaporozhye taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20141007-2033\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-heapdump_zh_CN.jar taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\btn-previous-static.png taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\Notes_loop.wmv taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\README-JDK.html taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Havana taskhost.exe File opened for modification C:\Program Files\DVD Maker\fr-FR\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\asl-v20.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\config\Modules\org-netbeans-modules-profiler.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-modules-masterfs.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-coredump.xml taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\sa.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\NextMenuButtonIconSubpictur.png taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Push\push.png taskhost.exe File opened for modification C:\Program Files\Google\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Tokyo taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\London taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.apache.batik.util.gui_1.7.0.v200903091627.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\etc\visualvm.clusters taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\symbols.xml taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\huemainsubpicture2.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\jfr\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\images\cursors\win32_CopyDrop32x32.gif taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Volgograd taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\ModuleAutoDeps\org-netbeans-modules-queries.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\org-openide-modules.jar taskhost.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Costa_Rica taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\EST taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.rcp.product_5.5.0.165303\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\update_tracking\org-netbeans-modules-profiler.xml taskhost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1452 wrote to memory of 468 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 27 PID 1452 wrote to memory of 468 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 27 PID 1452 wrote to memory of 468 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 27 PID 1452 wrote to memory of 1108 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 9 PID 1452 wrote to memory of 1176 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 15 PID 1452 wrote to memory of 468 1452 7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe 27 PID 468 wrote to memory of 1616 468 cmd.exe 29 PID 468 wrote to memory of 1616 468 cmd.exe 29 PID 468 wrote to memory of 1616 468 cmd.exe 29
Processes
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵
- Drops file in Program Files directory
PID:1108
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1176
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C:\Users\Admin\AppData\Local\Temp\7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe"C:\Users\Admin\AppData\Local\Temp\7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1452 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe" /f2⤵
- Suspicious use of WriteProcessMemory
PID:468 -
C:\Windows\system32\reg.exeREG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\7e02efaf98a1343c6a41a9e084c62567f99386a4046f68a658a8d667c3834305.exe" /f3⤵
- Adds Run key to start application
PID:1616
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