Analysis
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max time kernel
145s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
15-03-2024 05:45
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
caa0cff47eb2fb6deb797c9c73ccf88b.dll
Resource
win7-20240221-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
caa0cff47eb2fb6deb797c9c73ccf88b.dll
Resource
win10v2004-20240226-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
caa0cff47eb2fb6deb797c9c73ccf88b.dll
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Size
571KB
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MD5
caa0cff47eb2fb6deb797c9c73ccf88b
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SHA1
0b526ec97a44febd67746375aa797a5cfba04d42
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SHA256
1708053483dc0e430fec8a8b7e265d22f44d2d8dd8d2a07dba270b20aabbbfc6
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SHA512
fa9af48714d875696464ab0559c8264701cfc318334a46608df711d30668bdacc7c276b3b5e94abfa67d50aeb52c79e7edd9e351be7b82b25d23545c52dcb7ca
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SSDEEP
6144:05iljyP6cmC6YlgFVNwpyQCPLzUDms95NqnRpePh1Kq:008DmugF1QCTz1RIJ1Kq
Score
10/10
Malware Config
Extracted
Path
C:\Program Files (x86)\readme.txt
Family
conti
Ransom Note
All of your files are currently encrypted by CONTI strain.
As you know (if you don't - just "google it"), all of the data that has been encrypted by our software cannot be recovered by any means without contacting our team directly.
If you try to use any additional recovery software - the files might be damaged, so if you are willing to try - try it on the data of the lowest value.
To make sure that we REALLY CAN get your data back - we offer you to decrypt 2 random files completely free of charge.
You can contact our team directly for further instructions through our website :
TOR VERSION :
(you should download and install TOR browser first https://torproject.org)
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
HTTPS VERSION :
https://contirecovery.top/
YOU SHOULD BE AWARE!
Just in case, if you try to ignore us. We've downloaded a pack of your internal data and are ready to publish it on out news website if you do not respond. So it will be better for both sides if you contact us as soon as possible.
---BEGIN ID---
0eEz6OuhUnwbHRlzxC3jBFbAMntT9rjPj0rYaBQkgN1a8Xg1kFQz4zOKyF9mfVph
---END ID---
URLs
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
https://contirecovery.top/
Signatures
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Conti Ransomware
Ransomware generally thought to be a successor to Ryuk.
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Renames multiple (7352) 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
Processes:
regsvr32.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\readme.txt regsvr32.exe -
Drops desktop.ini file(s) 31 IoCs
Processes:
regsvr32.exedescription ioc Process File opened for modification C:\Users\Admin\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Libraries\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\3D Objects\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc Process File opened for modification C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_ja.properties regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\fr-fr\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\root\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ul-oob.xrm-ms regsvr32.exe File created C:\Program Files\Common Files\microsoft shared\ink\sv-SE\readme.txt regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\SubsystemController.man regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_heb.xml regsvr32.exe File opened for modification C:\Program Files\Mozilla Firefox\crashreporter.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp4-ul-phn.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Locale\en_US\stopwords.ENU regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Locales\ur.pak.DATA regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\de-de\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\viewer\nls\es-es\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-ul-oob.xrm-ms regsvr32.exe File created C:\Program Files\Common Files\microsoft shared\ink\nl-NL\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Common Files\System\ado\msado27.tlb regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Fonts\private\JUICE___.TTF regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\CPDF_RHP.aapp regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifestLoc.16.en-us.xml regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_OEM_Perp-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\ky\LC_MESSAGES\vlc.mo regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.185.17\EdgeUpdate.dat regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\ko-kr\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\tr-tr\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themes\dark\close-2.svg regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\FrequentOfficeUpdateSchedule.xml regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\Adobe\HelpCfg\en_US\Reader_DC.helpcfg regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\minimalist.dotx regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\fr-fr\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\plugins\editpdf-tool-view.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\sl-si\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\hwrcommonlm.dat regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL087.XML regsvr32.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\amd64\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\ccloud_retina.png regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\js\nls\nl-nl\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\en-il\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\ru-ru\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ul-phn.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ExcelInterProviderRanker.bin regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.contrast-black_scale-80.png regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\s_filetype_psd.svg regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\es-es\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\plugins\rhp\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\js\nls\eu-es\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_KMS_Client-ppd.xrm-ms regsvr32.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\zh-TW\readme.txt regsvr32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\DEEPBLUE\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\css\readme.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\Adobe\Reader\DC\readme.txt regsvr32.exe File created C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\EPDF_Full.aapp regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\images\rhp_world_icon_2x.png regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\pt-br\ui-strings.js regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\tet\readme.txt regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid Process 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe 5056 regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid Process procid_target PID 5068 wrote to memory of 5056 5068 regsvr32.exe 89 PID 5068 wrote to memory of 5056 5068 regsvr32.exe 89 PID 5068 wrote to memory of 5056 5068 regsvr32.exe 89
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\caa0cff47eb2fb6deb797c9c73ccf88b.dll1⤵
- Suspicious use of WriteProcessMemory
PID:5068 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\caa0cff47eb2fb6deb797c9c73ccf88b.dll2⤵
- Drops startup file
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:5056
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
1KB
MD53f90c3fc1f90a6146c5adffd6c732338
SHA1a666d35229248036f9581833e95974ca3482d743
SHA25650218a82ffd8d50145a5da1873225c83d8d4c95401a0c6cdb4f4acebf14507f2
SHA512b2e78890aa99f2404c57313b449ce5f03e1dbb2e0d806b546ef272ca77a7682b4b7fb1db3a05b0b751df4939b0a2bee278724fb654f9f854e7b3acd141545fa4