Analysis
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max time kernel
127s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
02-07-2024 23:50
Static task
static1
Behavioral task
behavioral1
Sample
2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe
Resource
win10v2004-20240611-en
General
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Target
2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe
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Size
905KB
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MD5
f6e5f0ed974c89e2b4a47989fc987c79
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SHA1
1906b34b2b7b30abeea67cf5bd1bd895624d2702
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SHA256
d7ba9881345d71862a68080d210643e2c2d3e17fd13065385edcd3b3391898c3
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SHA512
f16de7dba20b7443b4c19bed4ed9e8ae82bda2b4b352cbac0aeddc26b18a583ccf8d6d8177fc061f69ea8789a2f224cafef3e01f670aa734695d2a31fc496275
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SSDEEP
6144:/I99bj5oxq4BhArStlw0vRK/NMMmJZ/76jOMFMJnUm5cOgdVzOTeE:7IStlw0vRK/6h/7tJnLhgXXE
Malware Config
Signatures
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Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
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Renames multiple (8594) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.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 (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themes\dark\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-pl.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial-pl.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Corbel.xml.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_gridview-hover.svg.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\ro-ro\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Red.xml.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\notificationsUI\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\nls\de-de\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\js\nls\de-de\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\vi_get.svg.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\7-Zip\Lang\ky.txt.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\it\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\ca-es\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\CYRILLIC.TXT.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\125.0.2535.92\ResiliencyLinks\Trust Protection Lists\Sigma\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\en-gb\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\MSFT_PackageManagementSource\de-DE\MSFT_PackageManagementSource.schema.mfl.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\ja-jp\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\js\nls\nb-no\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\images\themes\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\en-gb\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\am\LC_MESSAGES\vlc.mo.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\es-es\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Font\CourierStd-Bold.otf.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Configuration\card_security_terms_dict.txt.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-ul-phn.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ul-oob.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Services.Store.Engagement_10.0.18101.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\zh-cn\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\pl-pl\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Common.View.UWP\Strings\cs-CZ\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\js\nls\de-de\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeWebView\Application\125.0.2535.92\Locales\mk.pak.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\COMPASS\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft Help\MS.ONENOTE.16.1033.hxn.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Common.View.UWP\Strings\id-ID\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.NET.Native.Framework.1.7_1.7.25531.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\plugins\selection-action-plugins\epdf\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeWebView\Application\125.0.2535.92\Trust Protection Lists\Mu\Social.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\Common Files\System\Ole DB\it-IT\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-ppd.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\VideoLAN\VLC\plugins\access_output\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Adobe Acrobat Pro DC.pdf.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\css\home-view.css.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\CompleteCheckmark2x.png.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Java\jdk-1.8\legal\jdk\cryptix.md.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\VideoLAN\VLC\locale\mk\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_signed_out.svg.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\css\main-selector.css.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\hu-hu\ui-strings.js.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\it-it\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\ECLIPSE\THMBNAIL.PNG.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\collect_feedback\css\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\fr-fr\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\125.0.2535.92\Locales\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\VideoEditor.Common\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\ENU\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_editpdf_18.svg.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Trial-ppd.xrm-ms.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File opened for modification C:\Program Files\Java\jre-1.8\LICENSE.rhysida 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\Assets\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\ko-kr\CriticalBreachDetected.pdf 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 948 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3364 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe 3364 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3364 wrote to memory of 5668 3364 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe 98 PID 3364 wrote to memory of 5668 3364 2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe 98 PID 5668 wrote to memory of 4716 5668 cmd.exe 100 PID 5668 wrote to memory of 4716 5668 cmd.exe 100 PID 4716 wrote to memory of 948 4716 cmd.exe 101 PID 4716 wrote to memory of 948 4716 cmd.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe"1⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3364 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c cmd.exe /c start ping 127.0.0.1 -n 2 > nul && del /f /q "C:\Users\Admin\AppData\Local\Temp\C:\Users\Admin\AppData\Local\Temp\2024-07-02_f6e5f0ed974c89e2b4a47989fc987c79_rhysida.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:5668 -
C:\Windows\system32\cmd.execmd.exe /c start ping 127.0.0.1 -n 23⤵
- Suspicious use of WriteProcessMemory
PID:4716 -
C:\Windows\system32\PING.EXEping 127.0.0.1 -n 24⤵
- Runs ping.exe
PID:948
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
111KB
MD51a89f87fe9f32b46bee6600ff2053647
SHA1a215d017a30f0f41116dbebe6b13e4d144962408
SHA25671c8257174b75afb74598a130a806d5272e551ed9f556dbc4dc8e31f83883293
SHA512f53b63d0ca57ac8180468ee747da727fb478e1ca7761cfa7c54ef4046bc393baf7a1a268c4870b972cc2858970b33f401ad979375d274a7b3ed4c1ab271e784e