Analysis
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max time kernel
202s -
max time network
176s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
01-02-2022 01:33
Static task
static1
Behavioral task
behavioral1
Sample
278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39.dll
Resource
win10v2004-en-20220112
windows10-2004_x64
0 signatures
0 seconds
General
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Target
278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39.dll
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Size
57KB
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MD5
59efb6774ad0b6ee41184e49e7f14c1e
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SHA1
7cde3ed8f0b731044783d40481fe9cc892c8f978
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SHA256
278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39
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SHA512
836e7ad821eca323e815ad26060cc6f903993856f506869d2ecb667c6bc888ad0a42aa0676dea5f5af0eb8b8701788ba99d78f119a686e6f05d7ff73a896564b
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:
//H5GgHH3YBo3CkkxDPWPQtnnlfuXiA2XlRWGPNj/oKj6ojXeA
7qNe2oeq+ylv0xo3Gcnz98wW/EB9GZVQHZuUzvh2VO3xlj65Yy
i+NykmrZf6a2JnCjD/fdc0V+6WDjTulmnGjfHSbknw0YtsALtC
D1TTBXQq/1UEK54tqt3Pq00vkDDRumFg3FCwDcuA+HEtqpwS1f
FtgG9NQOCz705bSBnGfM4DgC76Zeo5Johsh7Dakgcug7CtzBFk
3I+cj5QV+niCM/MCF9sQqktpJmqJizxhin5GmLVw==}
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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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.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\DeleteToastQuickAction.scale-80.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.targetsize-30.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OutlookAccount.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Yahoo-Dark.scale-150.png rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Font\PFM\zx______.pfm rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorStoreLogo.contrast-black_scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\fonts\symbol.ttf rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\FPA_f14\FA000000014 rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AppTiles\contrast-black\MapsSplashScreen.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.YourPhone_0.19051.7.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AppTiles\contrast-white\SplashScreen.scale-125_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.YourPhone_0.19051.7.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\MediaInkTransportControls.xbf rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Win10\Classic\FreeCell.Medium.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00_14.0.27323.0_x64__8wekyb3d8bbwe\AppxMetadata\CodeIntegrity.cat rundll32.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\nacl_irt_x86_64.nexe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.contrast-white_targetsize-30_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\Assets\PackageLogo.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\Timer3Sec.targetsize-24.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\Client2019_eula.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-80_altform-lightunplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SplashWideTile.scale-125_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteSectionLargeTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\Assets\Images\SkypeLogo.scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Advanced-Dark.scale-400.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Generic-Dark.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-Outlook.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsCalculator_10.1906.55.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_2019.716.2316.0_neutral_~_8wekyb3d8bbwe\AppxMetadata\AppxBundleManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubSmallTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\PhotosLargeTile.contrast-black_scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\LargeTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_neutral_split.scale-125_8wekyb3d8bbwe\images\Square44x44Logo.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\GenericMailWideTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_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\HxMailAppList.targetsize-20_altform-lightunplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\animations\OneNoteCheckmark.gif rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\xaml\onenote\CaptureUIStyles.xaml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\StoreAppList.targetsize-48.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsStore_11910.1002.5.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\StoreSmallTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteAppList.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-48.png rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\ReadOutLoud.api rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteNotebookLargeTile.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-30_altform-unplated_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\en-gb\locimages\offsyml.ttf rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.XboxApp_48.49.31001.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\GamesXboxHubLargeTile.scale-125_contrast-high.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\WinStoreTasks.winmd rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-36_altform-fullcolor.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-64_altform-unplated_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\AppIcon.targetsize-30_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\PhotosSmallTile.contrast-black_scale-100.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsCamera_2018.826.98.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraSplashScreen.contrast-black_scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxCalendarSplashLogo.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\contrast-black\BadgeLogo.scale-150_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarMediumTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_neutral_split.scale-100_8wekyb3d8bbwe\images\Square44x44Logo.scale-100.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerPoint.PowerPoint.x-none.msi.16.x-none.xml rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office15\pkeyconfig-office.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\1851_32x32x32.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosLargeTile.contrast-white_scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNotePageSmallTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Lighting\Light\Paint3D.png rundll32.exe -
Suspicious behavior: EnumeratesProcesses 46 IoCs
pid Process 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe 376 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 376 rundll32.exe Token: SeImpersonatePrivilege 376 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1472 wrote to memory of 376 1472 rundll32.exe 54 PID 1472 wrote to memory of 376 1472 rundll32.exe 54 PID 1472 wrote to memory of 376 1472 rundll32.exe 54
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\278f0dcb42837dbe078cd80057d9d6541d6f82e0163495425fd6716965b20b39.dll,#12⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:376
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