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Analysis
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max time kernel
171s -
max time network
145s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
20/02/2022, 06:40
Static task
static1
Behavioral task
behavioral1
Sample
611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe
Resource
win10v2004-en-20220113
General
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Target
611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe
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Size
315KB
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MD5
c1d23b26b074c453fc53c45c7674e32f
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SHA1
c39f9181564f7d945d7d95cdebcc069db7fc9e74
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SHA256
611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85
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SHA512
f72d1a8018ccc3953d5d5d36ca5dcf1f3bee4d2f33d79a68cca2b33c3e6f18018f8459046bba7998fd9b6c58c0a20ef1273b1824a0980df15b2c954ae0221121
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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resource yara_rule behavioral1/memory/1624-56-0x0000000030000000-0x00000000303DE000-memory.dmp vmprotect behavioral1/memory/1508-61-0x0000000030000000-0x00000000303DE000-memory.dmp vmprotect -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe" reg.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\hwrfrash.dat 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\OrangeCircles.jpg 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\NavigationUp_SelectionSubpicture.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\LucidaTypewriterRegular.ttf 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad\ea.xml 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Triedit\en-US\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\flower_trans_RGB_PAL.wmv 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_btn-next-over-select.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\TravelIntroToMain.wmv 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\bin\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\Lang\zh-tw.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\TextConv\fr-FR\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\System\msadc\handler.reg 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\hwrenclm.dat 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\16_9-frame-highlight.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\bin\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Denver 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\base_jpn.xml 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\NavigationRight_ButtonGraphic.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Indiana\Vincennes 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Montreal 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\North_Dakota\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SportsNotesBackground_PAL.wmv 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\oskpred\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\System\ado\es-ES\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\shadowonlyframe_selectionsubpicture.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ipssrb.xml 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\uk-UA\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\zh-TW\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_babypink_Thumbnail.bmp 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\flavormap.properties 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\Lang\ne.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\grid_(cm).wmf 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\vstoee100.tlb 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DissolveAnother.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Dot.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\Memories_buttonClear.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_ja_JP.jar 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ipsita.xml 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DissolveNoise.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Google\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\jni.h 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\win32\bridge\AccessBridgeCalls.h 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Belem 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\Lang\ru.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\16_9-frame-image-mask.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\Lang\ku-ckb.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\grid_(inch).wmf 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VGX\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\resources.jar 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\El_Salvador 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\7z.sfx 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Circle_SelectionSubpictureB.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\16_9-frame-background.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\title_trans_scene.wmv 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Glace_Bay 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\7-Zip\Lang\da.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Tiki.gif 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\NavigationRight_SelectionSubpicture.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\16to9Squareframe_Buttongraphic.png 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\LucidaBrightDemiItalic.ttf 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\en-US\RyukReadMe.txt 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.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 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1624 wrote to memory of 1508 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 27 PID 1624 wrote to memory of 1508 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 27 PID 1624 wrote to memory of 1508 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 27 PID 1624 wrote to memory of 1508 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 27 PID 1624 wrote to memory of 1172 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 14 PID 1624 wrote to memory of 1308 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 16 PID 1624 wrote to memory of 1508 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 27 PID 1624 wrote to memory of 1612 1624 611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe 28 PID 1508 wrote to memory of 1280 1508 cmd.exe 29 PID 1508 wrote to memory of 1280 1508 cmd.exe 29 PID 1508 wrote to memory of 1280 1508 cmd.exe 29 PID 1508 wrote to memory of 1280 1508 cmd.exe 29
Processes
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵PID:1172
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1308
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C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe"C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe"1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\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\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe" /f /reg:642⤵
- Suspicious use of WriteProcessMemory
PID:1508 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe" /f /reg:643⤵
- Adds Run key to start application
PID:1280
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C:\Windows\system32\conhost.exe\??\C:\Windows\system32\conhost.exe "1588844096-869269830-718309272-1093651536-488408352-1861110116-18861520781968046502"1⤵PID:1612