Analysis
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max time kernel
93s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03-10-2024 01:57
Static task
static1
Behavioral task
behavioral1
Sample
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe
Resource
win10v2004-20240802-en
General
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Target
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe
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Size
906KB
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MD5
7cfba113342f78b5909f606c26fc1dc4
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SHA1
f9e65f0cb46128bdc218053e1549c5e584ab6cd5
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SHA256
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0
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SHA512
9339d2b22b074f0357dd1319d02e6675394bb6c9fbd5d6ac51bc5554c95b5d0044bf05e0c3626c4f79f9c0a48dcb0a4063a32cdd99531ee8071491b661cc24d2
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SSDEEP
6144:BYdNbzC+2VEIxgYClW0ClmQzrAczJPBv7ameMF87XUPwfO+jOT:SkLClW0ClmQzrtFBv767XcoO+
Malware Config
Signatures
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Detects Rhysida ransom note 1 IoCs
Processes:
resource yara_rule C:\Program Files\7-Zip\Lang\CriticalBreachDetected.pdf family_rhysida_ransomnote -
Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
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Renames multiple (8192) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
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Drops startup file 1 IoCs
Processes:
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe -
Reads user/profile data of web browsers 3 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
Processes:
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exedescription ioc process File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\comment.svg.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\nl-nl\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail-ul-oob.xrm-ms.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PREVIEWTEMPLATE.POTX.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Mozilla Firefox\browser\features\[email protected] b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Fonts\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\themes\dark\bg_patterns_header.png.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\he-il\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA\Pipeline.v10.0\AddInSideAdapters\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\hi.pak.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\hu\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PROOF\LTSHYPH_ES.LEX.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\css\main-selector.css.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\welcome-2x.png.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Retail-pl.xrm-ms.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-ul-oob.xrm-ms.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Localized_images\it-it\AppStore_icon.svg.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\pt-br\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\SupplementalDictionaries\en_GB\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Resources\1033\PowerPivotExcelClientAddIn.rll.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PROOF\LTSHYPH_FR.LEX.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\rsod\wordmui.msi.16.en-us.boot.tree.dat.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\VideoLAN\VLC\locale\lo\LC_MESSAGES\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\Windows Defender\fr-FR\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\images\example_icons.png.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\de-DE\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\VGX\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\sl-si\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\TellMeExcel.nrr.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\IRIS\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\onenote.x-none.msi.16.x-none.vreg.dat.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\ach\LC_MESSAGES\vlc.mo.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\rsod\office.x-none.msi.16.x-none.boot.tree.dat.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Common.View.UWP\Strings\et-EE\View3d\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\ink\es-ES\InkObj.dll.mui.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\id.pak.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Assets\Images\HelpAndFeedback\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\Diagnostics\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\ko-kr\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\ru-ru\ui-strings.js.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\uk-ua\ui-strings.js.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-ul-phn.xrm-ms.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\RHP_icons.png.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\css\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\back-arrow-hover.svg.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\en-ae\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\SupplementalDictionaries\en_CA\excluded.txt.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\GRPHFLT\MS.WPG.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.XboxApp_48.49.31001.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\Words.pdf.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\css\files\dev\libs\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\cs-cz\ui-strings.js.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\en-gb\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\uk-ua\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\Info2x.png.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_MoveNoDrop32x32.gif.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Locales\sr-Latn-RS.pak.DATA.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\viewer\nls\ui-strings.js.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\ink\ja-JP\CriticalBreachDetected.pdf b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Fonts\private\MTEXTRA.TTF.rhysida b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 3 IoCs
Adversaries may check for Internet connectivity on compromised systems.
Processes:
cmd.exePING.EXEcmd.exepid process 6072 cmd.exe 5784 PING.EXE 5392 cmd.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exepid process 4864 b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe 4864 b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.execmd.execmd.exedescription pid process target process PID 4864 wrote to memory of 5392 4864 b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe cmd.exe PID 4864 wrote to memory of 5392 4864 b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe cmd.exe PID 5392 wrote to memory of 6072 5392 cmd.exe cmd.exe PID 5392 wrote to memory of 6072 5392 cmd.exe cmd.exe PID 6072 wrote to memory of 5784 6072 cmd.exe PING.EXE PID 6072 wrote to memory of 5784 6072 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe"C:\Users\Admin\AppData\Local\Temp\b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe"1⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4864 -
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\b183b142d3c4e99ee07c3407b82858146fa61ded95be2e67ce920c8002309fb0.exe"2⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:5392 -
C:\Windows\system32\cmd.execmd.exe /c start ping 127.0.0.1 -n 23⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:6072 -
C:\Windows\system32\PING.EXEping 127.0.0.1 -n 24⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:5784
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
111KB
MD52d94bc3146c72f6f8caf958efcd32fa3
SHA10be34aaca455daa62a296b56d025f396f066e5d5
SHA2563cc02a7e8dfb12a7f0fc44c80115f8bc6e460f7b39f32b02b2185ef8424a07ec
SHA5126fc7d3c2081485dd94c88cd61516d218139d330cd057316d2ba118c090833f00ea34225fb3453a25cb1f2666073567c84553e33093cc02924b3534ff360ecb9f