Analysis
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max time kernel
170s -
max time network
176s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
01-02-2022 01:23
Static task
static1
Behavioral task
behavioral1
Sample
cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e.dll
Resource
win10v2004-en-20220112
windows10-2004_x64
0 signatures
0 seconds
General
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Target
cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e.dll
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Size
57KB
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MD5
b3297ec417511c2a4a24e378904d273c
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SHA1
6a7caedc65bd2877f6823562700821d07294b2d7
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SHA256
cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e
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SHA512
2f30750971538ab518a58359f23f4133cca28991635f36064eb36c167c05ac993bd9489b7fce71bc85450e56c971c1ce7b5699acb79cd9e60844dd0acc7ed3d5
Score
10/10
Malware Config
Extracted
Path
C:\5B361F-Readme.txt
Family
netwalker
Ransom Note
Hi!
Your files are encrypted by Netwalker.
All encrypted files for this computer has extension: .5b361f
--
If for some reason you read this text before the encryption ended,
this can be understood by the fact that the computer slows down,
and your heart rate has increased due to the ability to turn it off,
then we recommend that you move away from the computer and accept that you have been compromised.
Rebooting/shutdown will cause you to lose files without the possibility of recovery.
--
Our encryption algorithms are very strong and your files are very well protected,
the only way to get your files back is to cooperate with us and get the decrypter program.
Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover.
For us this is just business and to prove to you our seriousness, we will decrypt you one file for free.
Just open our website, upload the encrypted file and get the decrypted file for free.
--
Steps to get access on our website:
1.Download and install tor-browser: https://torproject.org/
2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion
If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
3.Put your personal code in the input form:
{code_5b361f:
kAOxebyS9BDIxU8TyNca1KsQfsGDAGXRCgHY23/YSZtfhEFhAo
JP84VK+zAq7arAfSguxKpgfUeh1j29rzaWa4l9E9h0hmwr65Yy
i9x9UePS/2RT4UT+k0JpK6cYu1jVlBuNzbLeE9k/nMwGwRUMcP
TgAQaMANx/yyAivL12xaeeRFSHE62ZShPQtaADRB5KHy5FeKAK
YpgmIVhRU6QksS4aPfcxJ8aQhCx1YL2ht++Ky3ahMqvEsUE/c8
Slo/WwNwSihgK3NV49gm3uvkxlBlx7J9zPd8oOfw==}
URLs
http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion
http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
Signatures
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Netwalker Ransomware
Ransomware family with multiple versions. Also known as MailTo.
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Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\MountProtect.raw => C:\Users\Admin\Pictures\MountProtect.raw.5b361f rundll32.exe File renamed C:\Users\Admin\Pictures\ConvertFromRepair.tif => C:\Users\Admin\Pictures\ConvertFromRepair.tif.5b361f rundll32.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 opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorLargeTile.contrast-white_scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-white\LargeTile.scale-100_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-white\LargeTile.scale-400_contrast-white.png rundll32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\modules\org-netbeans-modules-profiler-utilities.jar rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\SplashScreen.scale-150.png rundll32.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\jce.jar rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.ZuneMusic_10.19071.19011.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-black\SmallLogo.scale-125_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\MapsAppList.targetsize-256_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\Assets\contrast-white\MixedRealityPortalAppList.targetsize-40_altform-unplated_contrast-white.png rundll32.exe File opened for modification C:\Program Files\7-Zip\Lang\he.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\BadgeLogo.scale-400.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\LargeTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1036\MSO.ACL rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailSmallTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-64_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\Fonts\segxsym.ttf rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailBadge.scale-100.png rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-icons_228ef1_256x240.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Yahoo-Light.scale-400.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\BadgeLogo.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerBackgroundTasks.winmd rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\_Resources\3.rsrc rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-30_altform-unplated_contrast-high.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-80_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.ZuneVideo_10.19071.19011.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-black\SmallLogo.scale-125_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraAppList.targetsize-16_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\ScreenSketchSquare44x44Logo.targetsize-80_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\MapsAppList.targetsize-96_altform-unplated_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\Assets\Audio\Skype_Call_Dialing.m4a rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-40_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-32_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.scale-125_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.scale-125_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.NET.Native.Framework.1.7_1.7.25531.0_x64__8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\Assets\Audio\Skype_Dtmf_6.m4a rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\Timer10Sec.targetsize-24.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubLargeTile.scale-100_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\Assets\contrast-black\PeopleAppList.targetsize-20_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-20_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\contrast-black\MapsBadgeLogo.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\Assets\Icons\icon_play_nor.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteAppList.targetsize-40_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Assets\Images\PrintAndShare\Glyph_0xe7dd.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MML2OMML.XSL rundll32.exe File opened for modification C:\Program Files\SuspendPing.tiff rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailLargeTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Images\accessibility_keyboard_arrows.png rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\Comments.aapp rundll32.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\javaws.jar rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\SmallTile.scale-200_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNotePageSmallTile.scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxA-Yahoo-Light.scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailSmallTile.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppPackageAppList.targetsize-64_altform-unplated_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-256_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-black\WideTile.scale-125_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\TrackingDLLUWP.winmd rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-48.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderLogoExtensions.targetsize-24.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteNewNoteMedTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-72_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailSplashLogo.scale-250.png rundll32.exe -
Suspicious behavior: EnumeratesProcesses 46 IoCs
pid Process 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe 1144 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1144 rundll32.exe Token: SeImpersonatePrivilege 1144 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1892 wrote to memory of 1144 1892 rundll32.exe 53 PID 1892 wrote to memory of 1144 1892 rundll32.exe 53 PID 1892 wrote to memory of 1144 1892 rundll32.exe 53
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1892 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cd8db109a908e7f18b048afc89689790afb715f6d9097eae54f80a58ce22057e.dll,#12⤵
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1144
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵PID:4028