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Analysis
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max time kernel
192s -
max time network
34s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
20/02/2022, 06:35
Static task
static1
Behavioral task
behavioral1
Sample
62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe
Resource
win10v2004-en-20220113
General
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Target
62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe
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Size
170KB
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MD5
0b7cd7bb98886561c8115f24b5bcd387
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SHA1
77a36353a0998388e56e849f6c05e4d7ca8c81e7
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SHA256
62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152
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SHA512
3812e6817c2f651c3f0434972eb223474a902a019acccb6143fa495f4d4b7a4a768866da2bb53f4c071792ca6d4d2e500c4e9a910d61999f9d549f1a9bfb3366
Malware Config
Extracted
C:\RyukReadMe.txt
ryuk
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\\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe" reg.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\bin\ij.bat taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\management\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\El_Salvador taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.net.nl_zh_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.common_2.10.1.v20140901-1043\license.html taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.equinox.p2.core.feature_1.3.0.v20140523-0116\META-INF\ECLIPSE_.RSA taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.workbench.renderers.swt.nl_ja_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\sk.txt taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Orange Circles.htm taskhost.exe File opened for modification C:\Program Files\Common Files\System\es-ES\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\bin\setNetworkClientCP.bat taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\org-openide-util-enumerations.xml_hidden taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\mng.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\META-INF\ECLIPSE_.SF 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\about.html taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\ko.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Scenes_INTRO_BG_PAL.wmv taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser.jdp.ja_5.5.0.165303.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\triggerEvaluators.exsd taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\4to3Squareframe_VideoInset.png taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\button-highlight.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-openide-loaders.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-swing-tabcontrol.jar taskhost.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\oledbvbs.inc taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\NavigationLeft_SelectionSubpicture.png taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\pt-BR\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\LucidaTypewriterBold.ttf taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\core\core.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-openide-awt.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.core.databinding_1.4.2.v20140729-1044.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ui.sdk_1.0.300.v20140407-1803.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-progress-ui.xml taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_btn-next-over-select.png 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\feature.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.ecore_2.10.1.v20140901-1043\epl-v10.html taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\bookicon.gif taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.css.swt_0.11.101.v20140818-1343.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ql.nl_ja_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\org-netbeans-modules-profiler-utilities.jar taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\it.txt taskhost.exe File opened for modification C:\Program Files\7-Zip\Lang\lv.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\16to9Squareframe_VideoInset.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.emf.common_2.10.1.v20140901-1043.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.directorywatcher.nl_ja_4.4.0.v20140623020002.jar taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\numbers\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\LayeredTitles\NavigationLeft_SelectionSubpicture.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Iqaluit taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Chisinau taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.emf.ecore.change_2.10.0.v20140901-1043.jar 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\plugin.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-queries.xml taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\1033\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\sqlxmlx.rll taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\RyukReadMe.txt taskhost.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\SpecialOccasion\mainscroll.png taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ql_2.0.100.v20131211-1531.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.sat4j.core_2.3.5.v201308161310.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-keyring-fallback_ja.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\bin\setNetworkServerCP.bat taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\management-agent.jar taskhost.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Makassar 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 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 524 wrote to memory of 1204 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe 29 PID 524 wrote to memory of 1204 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe 29 PID 524 wrote to memory of 1204 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe 29 PID 524 wrote to memory of 1208 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe 16 PID 1204 wrote to memory of 1440 1204 cmd.exe 31 PID 1204 wrote to memory of 1440 1204 cmd.exe 31 PID 1204 wrote to memory of 1440 1204 cmd.exe 31 PID 524 wrote to memory of 1312 524 62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe 15
Processes
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1312
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵
- Drops file in Program Files directory
PID:1208
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C:\Users\Admin\AppData\Local\Temp\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe"C:\Users\Admin\AppData\Local\Temp\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:524 -
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\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe" /f2⤵
- Suspicious use of WriteProcessMemory
PID:1204 -
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\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe" /f3⤵
- Adds Run key to start application
PID:1440
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