rhysida | d7ba9881345d71862a68080d210643e2c2d3e17fd13065385edcd3b3391898c3

Analysis

max time kernel
116s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
04-07-2024 09:19

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General

Target

20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
Size

905KB
MD5

f6e5f0ed974c89e2b4a47989fc987c79
SHA1

1906b34b2b7b30abeea67cf5bd1bd895624d2702
SHA256

d7ba9881345d71862a68080d210643e2c2d3e17fd13065385edcd3b3391898c3
SHA512

f16de7dba20b7443b4c19bed4ed9e8ae82bda2b4b352cbac0aeddc26b18a583ccf8d6d8177fc061f69ea8789a2f224cafef3e01f670aa734695d2a31fc496275
SSDEEP

6144:/I99bj5oxq4BhArStlw0vRK/NMMmJZ/76jOMFMJnUm5cOgdVzOTeE:7IStlw0vRK/6h/7tJnLhgXXE

Score

10^/10

rhysida ransomware spyware stealer

Malware Config

Signatures

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Renames multiple (8182) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTest-pl.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-ul-phn.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-125_8wekyb3d8bbwe\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\nls\es-es\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\eu-es\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\vstoee90.tlb.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_f2\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\Fonts\private\BOOKOSB.TTF.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ul-phn.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Images\contrast-white\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Assets\Logos\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\de-DE\msaddsr.dll.mui.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\VBA\VBA7.1\1033\VBLR6.CHM.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaTypewriterBold.ttf.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL089.XML.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\MSFT_PackageManagementSource\it-IT\MSFT_PackageManagementSource.schema.mfl.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\TAG.XSL.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN096.XML.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\ro-ro\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileAcrobatCard_Light.pdf.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\MLModels\nexturl.ort.DATA.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\js\common.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Locale\en_US\stopwords.ENU.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\search-summary\js\nls\hr-hr\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-phn.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\VideoLAN\VLC\lua\http\js\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-125_8wekyb3d8bbwe\microsoft.system.package.metadata\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\IDTemplates\ENU\DefaultID.pdf.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\sk-sk\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\he-il\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\zh-tw\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\sv-se\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\Internet Explorer\ja-JP\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTest-ul-oob.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription3-ul-oob.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\da-dk\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\large_trefoil.png.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\ru-ru\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\msadc\de-DE\msdaremr.dll.mui.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\identity_proxy\resources.pri.DATA.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Windows NT\TableTextService\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\PDDom.api.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\Dictionaries\en_GB\README_en_GB.txt.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\XML2WORD.XSL.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\Cartridges\sql120.xsl.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00A1-0000-1000-0000000FF1CE.xml.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\images\themes\dark\bg_pattern_RHP.png.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\MEIPreload\manifest.json.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\sl-si\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\EdgeWebView.dat.DATA.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\el\msipc.dll.mui.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft\OFFICE\Heartbeat\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ast\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16ConsumerPerp_Bypass30-ppd.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\nls\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\nls\ui-strings.js.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\ca-es\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\pt-br\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\TRANSLAT\FREN\MSB1FREN.ITS.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Mozilla Firefox\browser\VisualElements\PrivateBrowsing_150.png.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ppd.xrm-ms.rhysida	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\LTR\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
File created	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\CriticalBreachDetected.pdf	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4144	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2444	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
2444	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2320	2444	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe	96
PID 2444 wrote to memory of 2320	2444	20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe	96
PID 2320 wrote to memory of 8092	2320	cmd.exe	98
PID 2320 wrote to memory of 8092	2320	cmd.exe	98
PID 8092 wrote to memory of 4144	8092	cmd.exe	99
PID 8092 wrote to memory of 4144	8092	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe
"C:\Users\Admin\AppData\Local\Temp\20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe"
1⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\system32\cmd.exe
  C:\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\20240702f6e5f0ed974c89e2b4a47989fc987c79rhysida.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\system32\cmd.exe
    cmd.exe /c start ping 127.0.0.1 -n 2
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:8092
  - - C:\Windows\system32\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      Runs ping.exe
      PID:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\7-Zip\Lang\CriticalBreachDetected.pdf

Filesize
111KB

MD5
1a89f87fe9f32b46bee6600ff2053647

SHA1
a215d017a30f0f41116dbebe6b13e4d144962408

SHA256
71c8257174b75afb74598a130a806d5272e551ed9f556dbc4dc8e31f83883293

SHA512
f53b63d0ca57ac8180468ee747da727fb478e1ca7761cfa7c54ef4046bc393baf7a1a268c4870b972cc2858970b33f401ad979375d274a7b3ed4c1ab271e784e

Download Submit
memory/2444-5028-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2444-12416-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2444-12417-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2444-12418-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2444-12419-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download