avoslocker | f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 03:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
Size

807KB
MD5

8da384b2427b8397a5934182c159c257
SHA1

7bcd2d32a19c1ac7bd014dc9e64b806fdff5f5de
SHA256

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78
SHA512

3c4b1736efa48a4897769f12df488e60737523eaffc886ecfbd5b7191f058749bdb4a36feb067e8ca0ef418a7602b3390b6cf465412b88a4ba2fce8a4d670a89
SSDEEP

12288:0Z4s3rg9u/2/oT+NXtHLlP/O+OeO+OeNhBBhhBBAtHg9rjI+LXJ0ivlzkHBDsYAu:u4s+oT+NXBLi0rjFXvyHBlb6CZa8

Score

10^/10

avoslocker defense_evasion discovery evasion execution impact ransomware

Malware Config

Signatures

Avoslocker Ransomware
Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.
ransomware avoslocker
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

Processes:

bcdedit.exebcdedit.exe

pid	Process
36804	bcdedit.exe
36820	bcdedit.exe

Renames multiple (8457) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops desktop.ini file(s) 1 IoCs

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

description	ioc	Process
File opened (read-only)	\??\Z:	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1956828890.png"	reg.exe

Drops file in Program Files directory 64 IoCs

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\bg\msipc.dll.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\selector.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\en-ae\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\en-ae\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\ar-ae\ui-strings.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\hu\msipc.dll.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\ar-ae\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\locales\en-US.pak	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Retail-ppd.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_MAK_AE-ppd.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Locales\en-US.pak.DATA	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.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\js\nls\eu-es\ui-strings.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\es-es\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\SKY\SKY.INF	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PREVIEWTEMPLATE.POTX	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files\Windows Security\BrowserCore\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\en\DatabaseCompare_col.hxc	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTest-ul-oob.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial-Times New Roman.xml	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ja-JP\InputPersonalization.exe.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\as80.xsl	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\css\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\hr-hr\ui-strings.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\apple-touch-icon-72x72-precomposed.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Spotlight_WinterGames.gif	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\en-gb\locimages\offsym.ttf	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\DataModel\Cartridges\msjet.xsl	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN109.XML	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Windows Defender\es-ES\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\en-ae\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\it-it\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\pl-pl\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxA-Google.scale-200.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\dialogs\mosaic_window.html	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\rsod\proof.en-us.msi.16.en-us.boot.tree.dat	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer-select\css\main-selector.css	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\LICENSE.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptyCalendarSearch-Dark.scale-125.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-GoogleCloudCache.scale-150.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Windows Media Player\es-ES\mpvis.dll.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\Modules\Pester\3.4.0\Pester.psm1	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\EBWebView\x64\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\en-gb\ui-strings.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.scale-400.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\en-il\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\root\ui-strings.js	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Locale\en_US\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\it-IT\msdaprsr.dll.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\fr-FR\PhotoAcq.dll.mui	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-80.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Configuration\card_security_terms_dict.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20240802122653.pma	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Localized_images\zh-tw\AppStore_icon.svg	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\js\nls\ru-ru\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\GET_YOUR_FILES_BACK.txt	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.targetsize-32.png	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\Classic.dotx	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_KMS_Automation-ppd.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_KMS_Client-ul-oob.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\images\themeless\protect_poster.jpg	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\LISTS\1033\PHONE.XML	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\WordR_Retail-ul-phn.xrm-ms	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exe

pid	Process
38116	powershell.exe
16152	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

Processes:

vssadmin.exe

pid	Process
36812	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exepowershell.exepowershell.exe

pid	Process
3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
38116	powershell.exe
38116	powershell.exe
38116	powershell.exe
16152	powershell.exe
16152	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exeWMIC.exevssvc.exepowershell.exe

description	pid	Process
Token: SeTakeOwnershipPrivilege	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
Token: SeIncreaseQuotaPrivilege	38136	WMIC.exe
Token: SeSecurityPrivilege	38136	WMIC.exe
Token: SeTakeOwnershipPrivilege	38136	WMIC.exe
Token: SeLoadDriverPrivilege	38136	WMIC.exe
Token: SeSystemProfilePrivilege	38136	WMIC.exe
Token: SeSystemtimePrivilege	38136	WMIC.exe
Token: SeProfSingleProcessPrivilege	38136	WMIC.exe
Token: SeIncBasePriorityPrivilege	38136	WMIC.exe
Token: SeCreatePagefilePrivilege	38136	WMIC.exe
Token: SeBackupPrivilege	38136	WMIC.exe
Token: SeRestorePrivilege	38136	WMIC.exe
Token: SeShutdownPrivilege	38136	WMIC.exe
Token: SeDebugPrivilege	38136	WMIC.exe
Token: SeSystemEnvironmentPrivilege	38136	WMIC.exe
Token: SeRemoteShutdownPrivilege	38136	WMIC.exe
Token: SeUndockPrivilege	38136	WMIC.exe
Token: SeManageVolumePrivilege	38136	WMIC.exe
Token: 33	38136	WMIC.exe
Token: 34	38136	WMIC.exe
Token: 35	38136	WMIC.exe
Token: 36	38136	WMIC.exe
Token: SeIncreaseQuotaPrivilege	38136	WMIC.exe
Token: SeSecurityPrivilege	38136	WMIC.exe
Token: SeTakeOwnershipPrivilege	38136	WMIC.exe
Token: SeLoadDriverPrivilege	38136	WMIC.exe
Token: SeSystemProfilePrivilege	38136	WMIC.exe
Token: SeSystemtimePrivilege	38136	WMIC.exe
Token: SeProfSingleProcessPrivilege	38136	WMIC.exe
Token: SeIncBasePriorityPrivilege	38136	WMIC.exe
Token: SeCreatePagefilePrivilege	38136	WMIC.exe
Token: SeBackupPrivilege	38136	WMIC.exe
Token: SeRestorePrivilege	38136	WMIC.exe
Token: SeShutdownPrivilege	38136	WMIC.exe
Token: SeDebugPrivilege	38136	WMIC.exe
Token: SeSystemEnvironmentPrivilege	38136	WMIC.exe
Token: SeRemoteShutdownPrivilege	38136	WMIC.exe
Token: SeUndockPrivilege	38136	WMIC.exe
Token: SeManageVolumePrivilege	38136	WMIC.exe
Token: 33	38136	WMIC.exe
Token: 34	38136	WMIC.exe
Token: 35	38136	WMIC.exe
Token: 36	38136	WMIC.exe
Token: SeBackupPrivilege	39612	vssvc.exe
Token: SeRestorePrivilege	39612	vssvc.exe
Token: SeAuditPrivilege	39612	vssvc.exe
Token: SeDebugPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeSecurityPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeSecurityPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe
Token: SeSecurityPrivilege	38116	powershell.exe
Token: SeBackupPrivilege	38116	powershell.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.execmd.execmd.execmd.execmd.execmd.exepowershell.exe

description	pid	Process	procid_target
PID 3696 wrote to memory of 2636	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	84
PID 3696 wrote to memory of 2636	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	84
PID 3696 wrote to memory of 4252	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	85
PID 3696 wrote to memory of 4252	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	85
PID 3696 wrote to memory of 3496	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	86
PID 3696 wrote to memory of 3496	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	86
PID 3696 wrote to memory of 4912	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	87
PID 3696 wrote to memory of 4912	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	87
PID 3696 wrote to memory of 4468	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	88
PID 3696 wrote to memory of 4468	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	88
PID 4912 wrote to memory of 36804	4912	cmd.exe	89
PID 4912 wrote to memory of 36804	4912	cmd.exe	89
PID 4252 wrote to memory of 36812	4252	cmd.exe	90
PID 4252 wrote to memory of 36812	4252	cmd.exe	90
PID 3496 wrote to memory of 36820	3496	cmd.exe	91
PID 3496 wrote to memory of 36820	3496	cmd.exe	91
PID 4468 wrote to memory of 38116	4468	cmd.exe	94
PID 4468 wrote to memory of 38116	4468	cmd.exe	94
PID 2636 wrote to memory of 38136	2636	cmd.exe	95
PID 2636 wrote to memory of 38136	2636	cmd.exe	95
PID 3696 wrote to memory of 16152	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	99
PID 3696 wrote to memory of 16152	3696	f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe	99
PID 16152 wrote to memory of 16600	16152	powershell.exe	100
PID 16152 wrote to memory of 16600	16152	powershell.exe	100
PID 16152 wrote to memory of 17060	16152	powershell.exe	103
PID 16152 wrote to memory of 17060	16152	powershell.exe	103

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe
"C:\Users\Admin\AppData\Local\Temp\f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78.exe"
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c wmic shadowcopy delete /nointeractive
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:38136
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4252
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:36812
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} recoveryenabled No
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3496
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} recoveryenabled No
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:36820
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:36804
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:38116
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$a = [System.IO.File]::ReadAllText(\"C:\GET_YOUR_FILES_BACK.txt\");Add-Type -AssemblyName System.Drawing;$filename = \"$env:temp\$(Get-Random).png\";$bmp = new-object System.Drawing.Bitmap 1920,1080;$font = new-object System.Drawing.Font Consolas,10;$brushBg = [System.Drawing.Brushes]::Black;$brushFg = [System.Drawing.Brushes]::White;$format = [System.Drawing.StringFormat]::GenericDefault;$format.Alignment = [System.Drawing.StringAlignment]::Center;$format.LineAlignment = [System.Drawing.StringAlignment]::Center;$graphics = [System.Drawing.Graphics]::FromImage($bmp);$graphics.FillRectangle($brushBg,0,0,$bmp.Width,$bmp.Height);$graphics.DrawString($a,$font,$brushFg,[System.Drawing.RectangleF]::FromLTRB(0, 0, 1920, 1080),$format);$graphics.Dispose();$bmp.Save($filename);reg add \"HKEY_CURRENT_USER\Control Panel\Desktop\" /v Wallpaper /t REG_SZ /d $filename /f;Start-Sleep 1;rundll32.exe user32.dll, UpdatePerUserSystemParameters, 0, $false;"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:16152
- - C:\Windows\system32\reg.exe
    "C:\Windows\system32\reg.exe" add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\1956828890.png /f
    3⤵
    - Sets desktop wallpaper using registry
    PID:16600
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
    3⤵
    PID:17060

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:39612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

C:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
01188d22b1675e3437b1418e14f4ffab

SHA1
6e7127f3bbfce49485ed8f1acf8f697bcb952818

SHA256
e4b3ac00a0b2eb195b26abffbc4368077384e73393e51605edda17dae05ab7f2

SHA512
6903ae3247f32ad79c60a2062cd6a7bdbf5a7c9db1bdc43bdbef4da3396945014d30968ea4c8531a2d0c7b695f1ea36e2b8c51bb39cc6157c4096ac04a6e187d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g3ylgsnt.vcz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/38116-16869-0x00000195A71B0000-0x00000195A71D2000-memory.dmp

Filesize
136KB

Download
memory/38116-22606-0x00000195C13A0000-0x00000195C15BC000-memory.dmp

Filesize
2.1MB

Download
memory/38116-22610-0x00000195C13A0000-0x00000195C15BC000-memory.dmp

Filesize
2.1MB

Download