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Analysis
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max time kernel
205s -
max time network
214s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18/01/2024, 23:08
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe
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Size
2.2MB
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MD5
9c981a99a20d55fe5b8ebc4ed3f34a54
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SHA1
fadc6597ab077b0e88c8775559b874be2fc181f8
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SHA256
b5f80119a5e854adb02bd1ca88279719e914d0bde223b4794d8c05b93b17bb37
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SHA512
d6cbffc9d9142248262d33e0c0044e16aebf7fddba0bf7efe37b407ad4f3850042c93ae55842450151f6ad4088c1ce66278c0583fe01c4bd7905f07188513182
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SSDEEP
24576:pOObVw4TaN1wdkukCba4oXtgLhU3wEdmh58VVg9N9JMlDlfjRiVuVsWt5MJMs:pOOh3aN4kuLbegmtG+gFIDRRAubt5M
Malware Config
Signatures
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Executes dropped EXE 7 IoCs
pid Process 2688 alg.exe 1832 DiagnosticsHub.StandardCollector.Service.exe 4860 fxssvc.exe 4676 elevation_service.exe 4488 elevation_service.exe 5076 maintenanceservice.exe 2044 OSE.EXE -
Drops file in System32 directory 8 IoCs
description ioc Process File opened for modification C:\Windows\system32\config\systemprofile\AppData\Roaming\112851ea14007a37.bin DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Windows\system32\AppVClient.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Windows\system32\dllhost.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Windows\System32\alg.exe 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe File opened for modification C:\Windows\system32\AppVClient.exe 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe File opened for modification C:\Windows\system32\dllhost.exe 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe File opened for modification C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe File opened for modification C:\Windows\system32\fxssvc.exe 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\dotnet\dotnet.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jar.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstatd.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\serialver.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\java.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateComRegisterShell64.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\7-Zip\7z.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ssvagent.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_108328\java.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\orbd.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdb.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\xjc.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\java-rmi.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\jjs.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Google\Chrome\Application\106.0.5249.119\chrome_pwa_launcher.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\pack200.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\javacpl.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\javaws.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleCrashHandler.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Internet Explorer\iexplore.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javapackager.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOInstaller.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javadoc.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jmap.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstat.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_108328\javaws.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\7-Zip\Uninstall.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javaw.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\ssvagent.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification \??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jhat.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmic.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\java-rmi.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\keytool.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Java\Java Update\jucheck.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Internet Explorer\ExtExport.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateOnDemand.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\pack200.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_108328\javaw.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\7-Zip\7zFM.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Internet Explorer\ielowutil.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javac.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\orbd.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Java\Java Update\jaureg.exe DiagnosticsHub.StandardCollector.Service.exe File opened for modification C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe DiagnosticsHub.StandardCollector.Service.exe -
Modifies data under HKEY_USERS 5 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@fxsresm.dll,-1134 = "Microsoft Routing Extension" fxssvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@fxsresm.dll,-1131 = "Route through e-mail" fxssvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@fxsresm.dll,-1132 = "Store in a folder" fxssvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@fxsresm.dll,-1133 = "Print" fxssvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@fxsresm.dll,-1130 = "Microsoft Modem Device Provider" fxssvc.exe -
Suspicious behavior: LoadsDriver 2 IoCs
pid Process 672 Process not Found 672 Process not Found -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 2892 2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe Token: SeAuditPrivilege 4860 fxssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-18_9c981a99a20d55fe5b8ebc4ed3f34a54_ryuk.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
PID:2892
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C:\Windows\System32\alg.exeC:\Windows\System32\alg.exe1⤵
- Executes dropped EXE
PID:2688
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C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exeC:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
PID:1832
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv1⤵PID:3796
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C:\Windows\system32\fxssvc.exeC:\Windows\system32\fxssvc.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:4860
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"1⤵
- Executes dropped EXE
PID:4676
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C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe"1⤵
- Executes dropped EXE
PID:4488
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C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"1⤵
- Executes dropped EXE
PID:5076
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\??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"1⤵
- Executes dropped EXE
PID:2044
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
2.1MB
MD58388c29e175019a2b3fcc3dff1b2687a
SHA190c451564f8613aae1d12ea7599deb9a2b25b0e9
SHA256e32b04e8510d210a497366eb48ef32cc08b789adf0d2cf44b43e50a2ac509e06
SHA5125512b642a66caa6b1e4074bb85fbc10c6f640056e625f47a1c048e3f791c7b5c499928126d2eb8e73ad21054332efd62be6c630eb6b9d52a4f92a786deef1a19
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Filesize
1.5MB
MD519d7ebadf8d573e93eaeaded6748737c
SHA1c21f93391242728c2ea71e954dea7240b1c2eb2d
SHA256f06c39a209ca682b085e59b4c8dd29537079eaed3ec265460dc4f1a2d4116fcc
SHA512d1a5a635e48b2a86f8e8b7623170b7a5544eb694f6069ea7f80ca140dcecda7ba8af26edc78f35b5264ebedf81536720e8c06364b9ef572c58352d30d16a7dd9
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Filesize
1.5MB
MD567ceb49e8aad390848a53ded40760496
SHA1562fe64043567064f22e2e9345ea195ce23a10ca
SHA25650e30c25fad81b17641aa8a064605d63c400c826c58d088c1fae2574b6942599
SHA51279e9fc6cf47700ac43ff8f42874c3ac33467e23146e5a10074cf193f27f85286c13e77343b87eacba73e5d764b52ce082f7cd109905fe02bf33015ec8243ddcc
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Filesize
2.1MB
MD5234831eedc34fb078f9161a6640ef45e
SHA1456898ebce60d7fa45421c0d06ef22d88a1ce53d
SHA256180ae52dc31e2a7eee4b321ee9f8e3cf6f16fc3c754276fe0ec6f597216dd5d7
SHA512d89833ae7de7236056b698bffd6a44e15a55d4a80e66fb82c823ca80e1db309eb8c2c1fb007a836825917ba71280ac8401298d50871136b13ef447b78923a692
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Filesize
1.3MB
MD52210277644131e1298e25d88c3f42728
SHA106e7de861346708311cb9b8592bf3188ddac45b4
SHA256c016ca0314190ebc0266894aa9364f5e54cbb40b14bbd7bd0548bc7791c347bb
SHA5129b1b9cf5d187b79cff9009c1d5b4646ffc3b3e4050bde5bcdc4200a5880e4b324801691189ea28f15b4b6fc18e19ca3a5e8cc2acaf5c5a012e97bb71f51cd82a
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Filesize
1.2MB
MD5ed1ccf4b16aaff7000c87ed9678c7808
SHA16e4c912bd60975559a9e46b238910c87518f79f7
SHA256a5051c0586b00935f8097bb9929c109c011dbbefbd297ec073f6380dbf7f1dce
SHA51247b820ab705076ecdff6aa96ea9f730e861b4862842a0005c30e729a7c1ede8421d9870e376a412ac7d287c94a72e32169a88e76b1ef999807818e4634d661ed
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Filesize
1.3MB
MD56f1d58f855513bd0d479e440cea96fc6
SHA18cc63e6acf9db2962c8d047dd00a4fce12fc8177
SHA2566935f6fc30e7a933532612ec13b5f419b999841a01f7cd13a5b5899dbac1cb90
SHA512365c4560050f66330cb6f8d2cd4ff5f6a422450df8e2cc2dbeba4dd151b7255751f0249a697a7506190c25ca044b1d38c0384ac4dd16fe870cb4290b64f1dd77
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Filesize
1.3MB
MD5b2a73a1ed90e37942ea60aea4e978697
SHA154962fbbe773b25b8fb34442431198b6f56843b9
SHA25662258511e06af321d9a409734d0dcee43b5e30f145de91fbc123303394a7320f
SHA51231378ec48cb0a11679f8b035bebd574ed5d4d16f850d96c7e86f885eec7e3835f906aa984f086ca33d3362a35472ad4b6b27558581580107936b136d6f498813