Analysis
-
max time kernel
70s -
max time network
113s -
platform
windows10_x64 -
resource
win10v200722 -
submitted
26-09-2020 23:54
Static task
static1
Behavioral task
behavioral1
Sample
cn.ps1
Resource
win7v200722
Behavioral task
behavioral2
Sample
cn.ps1
Resource
win10v200722
General
-
Target
cn.ps1
-
Size
888KB
-
MD5
6c5252bee2eff7646cc082c4c64d66c6
-
SHA1
3e367fc34959616b705f0793b4cfadbe666c94d9
-
SHA256
1802e2cb97e5c5e502c4cb70dd38539502dbccc8972cc8c2b75d0e571f58cabb
-
SHA512
96e0705943fb0748a8f834a3f8f6ab476234dc7ed44e56d9e7e562e13a59c94ae38f7271ba25e86cc401c94123f0b3d4f66b69994b293b22d6f6a0cdb3affe4b
Malware Config
Extracted
C:\odt\3C33CC-Readme.txt
mailto_hamlampampom
Extracted
C:\Program Files\3C33CC-Readme.txt
mailto_hamlampampom
Extracted
C:\Users\Admin\AppData\Roaming\3C33CC-Readme.txt
mailto_hamlampampom
Extracted
C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\3C33CC-Readme.txt
mailto_hamlampampom
Signatures
-
MailTo (Hamlampampom Variant)
Ransomware family discovered in late 2019 with variants named based on contact emails.
-
Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
powershell.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\AddUse.tiff powershell.exe File opened for modification C:\Users\Admin\Pictures\CompleteInvoke.tiff powershell.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Modifies service 2 TTPs 5 IoCs
Processes:
vssvc.exedescription ioc process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5} vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer vssvc.exe -
Drops file in Program Files directory 17097 IoCs
Processes:
powershell.exedescription ioc process File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\sl-si\ui-strings.js powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_x64__8wekyb3d8bbwe\Assets\contrast-white\Movie-TVStoreLogo.scale-100_contrast-white.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\ThemeCreation\JumboDeck4.jpg powershell.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\en-il\3C33CC-Readme.txt powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\Dismiss.scale-80.png powershell.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E1-0409-1000-0000000FF1CE.xml powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\SATIN\PREVIEW.GIF powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\models\es-ES.mail.config powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-48_altform-unplated.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\animations\OneNoteFRE_Welcome.mp4 powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_x64__8wekyb3d8bbwe\Assets\FileExtension.targetsize-336.png powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\images\themes\dark\sat_logo.png powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\comments.win32.bundle powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\virgo-new-folder.svg powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1.10531.0_x64__8wekyb3d8bbwe\Assets\contrast-white\PeopleAppList.targetsize-96.png powershell.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\plugins\rhp\3C33CC-Readme.txt powershell.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\3C33CC-Readme.txt powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Emoticons\large\punch.png powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\bg5_thumb.png powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\eu-es\ui-strings.js powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Grace-ppd.xrm-ms powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\Microsoft.Advertising\bootstrap.html powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2017.125.40.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraWideTile.contrast-white_scale-100.png powershell.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\hr-hr\3C33CC-Readme.txt powershell.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-icons_ffffff_256x240.png powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\back-arrow-focus.svg powershell.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Localized_images\ko-kr\3C33CC-Readme.txt powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\ru-ru\ui-strings.js powershell.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.emf.ecore_2.10.1.v20140901-1043.jar powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_16.511.8780.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-24_altform-unplated.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.3DBuilder_13.0.10349.0_x64__8wekyb3d8bbwe\Assets\Workflow\Density_Selected_Hard.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-24_contrast-black.png powershell.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\ko-kr\3C33CC-Readme.txt powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_anonymoususer_18.svg powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql2000.xsl powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Grace-ul-oob.xrm-ms powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailSplashLogo.scale-150.png powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\resources.pri powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\1851_20x20x32.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1702.301.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.contrast-black_targetsize-16.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Arkadium.Win10.DailyChallenges\Assets\PrizeHistory\badges_diamond.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Buttons\Solve\autosolve_button_press.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Messaging_3.26.24002.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\checkmark-2x.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\small\pt_16x11.png powershell.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-threaddump_zh_CN.jar powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_reject_18.svg powershell.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.help.webapp_3.6.300.v20140407-1855.jar powershell.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\images\themes\dark\cstm_brand_preview.png powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-ul-phn.xrm-ms powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.16112.11621.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-32_contrast-black.png powershell.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.ZuneMusic_10.16112.11621.0_neutral_resources.scale-200_8wekyb3d8bbwe\Assets\SplashScreen.scale-200.png powershell.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\playlist\bbc_co_uk.luac powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\8041_40x40x32.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_x64__8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\RTL\WideTile.scale-200.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Themes\Autumn\autumn_1h.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\tr_60x42.png powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\2494_24x24x32.png powershell.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Home\LTR\contrast-black\WideTile.scale-125.png powershell.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\5311_20x20x32.png powershell.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\ICE\ICE.INF powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\SecondaryTiles\Car\RTL\contrast-black\WideTile.scale-100.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Fues\Texture_bg.png powershell.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\Office.png powershell.exe -
Modifies registry class 1 IoCs
Processes:
OpenWith.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1400429095-533421673-2598934218-1000_Classes\Local Settings OpenWith.exe -
Suspicious behavior: EnumeratesProcesses 19201 IoCs
Processes:
powershell.exepid process 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe 3956 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
powershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3956 powershell.exe Token: SeDebugPrivilege 3956 powershell.exe Token: SeImpersonatePrivilege 3956 powershell.exe Token: SeBackupPrivilege 4392 vssvc.exe Token: SeRestorePrivilege 4392 vssvc.exe Token: SeAuditPrivilege 4392 vssvc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
OpenWith.exepid process 6576 OpenWith.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
powershell.execsc.execsc.exedescription pid process target process PID 3956 wrote to memory of 2848 3956 powershell.exe csc.exe PID 3956 wrote to memory of 2848 3956 powershell.exe csc.exe PID 2848 wrote to memory of 3912 2848 csc.exe cvtres.exe PID 2848 wrote to memory of 3912 2848 csc.exe cvtres.exe PID 3956 wrote to memory of 1776 3956 powershell.exe csc.exe PID 3956 wrote to memory of 1776 3956 powershell.exe csc.exe PID 1776 wrote to memory of 4036 1776 csc.exe cvtres.exe PID 1776 wrote to memory of 4036 1776 csc.exe cvtres.exe PID 3956 wrote to memory of 4580 3956 powershell.exe notepad.exe PID 3956 wrote to memory of 4580 3956 powershell.exe notepad.exe
Processes
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\cn.ps11⤵
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3956 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\m2abxne1\m2abxne1.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:2848 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESB26D.tmp" "c:\Users\Admin\AppData\Local\Temp\m2abxne1\CSC7A78A1AEC115456690822EAB606F61BD.TMP"3⤵PID:3912
-
-
-
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\wi35xwus\wi35xwus.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:1776 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESB3C5.tmp" "c:\Users\Admin\AppData\Local\Temp\wi35xwus\CSC7C9AF4A6606247B287E36222809678D0.TMP"3⤵PID:4036
-
-
-
C:\Windows\system32\notepad.exeC:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\3C33CC-Readme.txt"2⤵PID:4580
-
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\3C33CC-Readme.txt1⤵PID:6032
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:6576
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {24AC8F2B-4D4A-4C17-9607-6A4B14068F97} -Embedding1⤵PID:5232
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:4392