Analysis
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max time kernel
51s -
max time network
31s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
08-04-2021 05:06
Static task
static1
Behavioral task
behavioral1
Sample
931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe
Resource
win10v20201028
General
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Target
931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe
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Size
500KB
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MD5
3f558a6a53c72b726b42d21fa1faaf83
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SHA1
6f5f822260e4deaa859f3f17e81d9349950d9e34
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SHA256
931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43
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SHA512
932442ae873bdd196142d9fc023d8c7ca05eeb55f728aa78dd451aaae5e35c13e701a3ca17bd8d79b8f924901677668275d325e7182d40f71e9b931a7ad568cd
Malware Config
Signatures
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Mespinoza Ransomware 2 TTPs
Also known as Pysa. Ransomware-as-a-servoce which first appeared in 2020.
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Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\CheckpointComplete.tif => C:\Users\Admin\Pictures\CheckpointComplete.tif.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Users\Admin\Pictures\CheckpointComplete.tif.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File renamed C:\Users\Admin\Pictures\DismountCheckpoint.tiff => C:\Users\Admin\Pictures\DismountCheckpoint.tiff.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Users\Admin\Pictures\DismountCheckpoint.tiff.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File renamed C:\Users\Admin\Pictures\MergeCheckpoint.crw => C:\Users\Admin\Pictures\MergeCheckpoint.crw.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Users\Admin\Pictures\MergeCheckpoint.crw.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe -
Deletes itself 1 IoCs
pid Process 1728 cmd.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Windows Sidebar\Gadgets\CPU.Gadget\en-US\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\Providers\Proximity\11.00\engphon.env.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Common Files\System\ado\en-US\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.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\feature.properties.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Cuiaba.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\PDXFile_8.ico.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\SLATE\SLATE.ELM.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Google\Chrome\Application\86.0.4240.111\Locales\es-419.pak.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\about.html.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.core_2.3.0.v20131211-1531.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\1033\MSOINTL.DLL.IDX_DLL.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\SKY\THMBNAIL.PNG.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\bin\setEmbeddedCP.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.feature.core_5.5.0.165303\feature.xml.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Europe\Warsaw.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\mosaic_window.html.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\RICEPAPR\PREVIEW.GIF.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Nome.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-print_ja.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\VideoLAN\VLC\locale\cs\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Asia\Hebron.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\create_stream.html.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Windows Media Player\Network Sharing\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\Providers\Proximity\11.00\can.hyp.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Anchorage.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator.manipulator_2.0.0.v20131217-1203.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\New_York.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-sampler_zh_CN.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\hu\LC_MESSAGES\vlc.mo.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\LISTS\1033\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Europe\Berlin.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\MUOPTIN.DLL.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_de_DE.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.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\feature.properties.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\p2\org.eclipse.equinox.p2.engine\.settings\org.eclipse.equinox.p2.artifact.repository.prefs.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-heapdump_ja.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\VideoLAN\VLC\locale\el\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\ms\LC_MESSAGES\vlc.mo.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Windows Sidebar\Gadgets\MediaCenter.Gadget\js\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\OSETUP.DLL.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\7-Zip\History.txt.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-autoupdate-cli_zh_CN.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-keyring-impl_ja.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\core\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-editor-mimelookup-impl_ja.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\com-sun-tools-visualvm-uisupport.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\VideoLAN\VLC\locale\sv\LC_MESSAGES\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\mobile_browse.html.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Google\Chrome\Application\86.0.4240.111\default_apps\gmail.crx.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.workbench3.nl_ja_4.4.0.v20140623020002.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Publisher.en-us\PublisherMUI.XML.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\GRPHFLT\MS.WPG.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser_5.5.0.165303.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\org-netbeans-lib-profiler-charts.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\VideoLAN\VLC\locale\be\LC_MESSAGES\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.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\feature.xml.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser.jdp_5.5.0.165303.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification.ja_5.5.0.165303.jar.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\Help\HxRuntime.HxS.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\1033\MSOINTL.REST.IDX_DLL.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File opened for modification C:\Program Files\AddLimit.m4a.pysa 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Indiana\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe File created C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Kentucky\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Readme.README 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 PID 324 wrote to memory of 1728 324 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe 32 -
System policy modification 1 TTPs 2 IoCs
description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticetext = 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 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticecaption = 50005900530041000000 931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe"C:\Users\Admin\AppData\Local\Temp\931772ac59f5859e053589202c8db81edc01911391fe5b32c9abb5bbc2b06e43.exe"1⤵
- Modifies extensions of user files
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
- System policy modification
PID:324 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "2⤵
- Deletes itself
PID:1728
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