avoslocker | ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f

Analysis

max time kernel
107s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-12-2024 00:07

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General

Target

ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
Size

807KB
MD5

e27b5291c8fb2dfdeb7f16bb6851df5e
SHA1

40207f83b601cd60905c1f807ac0889c80dfe33f
SHA256

ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f
SHA512

2ddbc50cd780ffbf73c354b9b437322eb49cb05bb6f287d54e7dcafb61dc4c4549e37ae2f972f3d240bfa7d2ca485b7583137f1bf038bc901f378cea0c305c6a
SSDEEP

12288:0Z4s3rg9u/2/oT+NXtHLlP/O+OeO+OeNhBBhhBBAtHg9rjI+LXJ0ivlzkHBDsYAG:u4s+oT+NXBLi0rjFXvyHBlbmCZa8

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
Avoslocker family
avoslocker

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	29252	28576	OfficeC2RClient.exe	116

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

pid	Process
35500	bcdedit.exe
50092	bcdedit.exe

Renames multiple (8494) 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

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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

description	ioc	Process
File opened (read-only)	\??\Z:	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\873556499.png"	reg.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft\OFFICE\Heartbeat\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN097.XML	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Locales\zh-TW.pak	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Generic-Light.scale-250.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\requests\browse.xml	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\zh_CN\LC_MESSAGES\vlc.mo	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\WATER\PREVIEW.GIF	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_KMS_ClientC2R-ul-oob.xrm-ms	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Edge.dat	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\themes\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\fr-fr\ui-strings.js	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\PackageManagementDscUtilities.psm1	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\VideoLAN\VLC\locale\sm\LC_MESSAGES\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-phn.xrm-ms	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\Common Files\System\Ole DB\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\css\tool-selector.css	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\hu-hu\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Outlook.scale-250.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxBadge.scale-200.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailLargeTile.scale-200.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\uk-UA\PhotoViewer.dll.mui	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ul-oob.xrm-ms	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\ext\sunjce_provider.jar	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Windows Media Player\fr-FR\wmpnssui.dll.mui	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\CONCRETE\CONCRETE.INF	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\sr-Cyrl-RS\msipc.dll.mui	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\hr\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\AddressBook2x.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH.HXS	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Java\jre-1.8\legal\jdk\jpeg.md	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\lib\resources.jar	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipschs.xml	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxLargeTile.scale-125.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\HWRCustomization\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\ko-kr\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\ca-es\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\editpdf.svg	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailBadge.scale-125.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailSmallTile.scale-400.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\et_get.svg	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\es-es\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\css\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\css\files\dev\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\WATER\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019DemoR_BypassTrial180-ppd.xrm-ms	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\js\nls\da-dk\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\nls\sl-si\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\back-arrow-default.svg	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\ExchangeLargeTile.scale-150.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\VideoLAN\VLC\locale\lg\LC_MESSAGES\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\VideoLAN\VLC\locale\brx\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_f4\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\deploy\messages_zh_CN.properties	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\close.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\css\app\dev\cef\GET_YOUR_FILES_BACK.txt	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\MSFT_PackageManagement\it-IT\MSFT_PackageManagement.schema.mfl	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\ja-JP\PhotoViewer.dll.mui	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\images\themes\dark\rhp_world_icon_2x.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\js\nls\de-de\ui-strings.js	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailWideTile.scale-100.png	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
35492	powershell.exe
34408	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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

pid	Process
35460	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
28180	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
35492	powershell.exe
35492	powershell.exe
35492	powershell.exe
34408	powershell.exe
34408	powershell.exe
31808	chrome.exe
31808	chrome.exe
31808	chrome.exe
31808	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
Token: SeIncreaseQuotaPrivilege	4772	WMIC.exe
Token: SeSecurityPrivilege	4772	WMIC.exe
Token: SeTakeOwnershipPrivilege	4772	WMIC.exe
Token: SeLoadDriverPrivilege	4772	WMIC.exe
Token: SeSystemProfilePrivilege	4772	WMIC.exe
Token: SeSystemtimePrivilege	4772	WMIC.exe
Token: SeProfSingleProcessPrivilege	4772	WMIC.exe
Token: SeIncBasePriorityPrivilege	4772	WMIC.exe
Token: SeCreatePagefilePrivilege	4772	WMIC.exe
Token: SeBackupPrivilege	4772	WMIC.exe
Token: SeRestorePrivilege	4772	WMIC.exe
Token: SeShutdownPrivilege	4772	WMIC.exe
Token: SeDebugPrivilege	4772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4772	WMIC.exe
Token: SeRemoteShutdownPrivilege	4772	WMIC.exe
Token: SeUndockPrivilege	4772	WMIC.exe
Token: SeManageVolumePrivilege	4772	WMIC.exe
Token: 33	4772	WMIC.exe
Token: 34	4772	WMIC.exe
Token: 35	4772	WMIC.exe
Token: 36	4772	WMIC.exe
Token: SeDebugPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	18816	vssvc.exe
Token: SeRestorePrivilege	18816	vssvc.exe
Token: SeAuditPrivilege	18816	vssvc.exe
Token: SeIncreaseQuotaPrivilege	4772	WMIC.exe
Token: SeSecurityPrivilege	4772	WMIC.exe
Token: SeTakeOwnershipPrivilege	4772	WMIC.exe
Token: SeLoadDriverPrivilege	4772	WMIC.exe
Token: SeSystemProfilePrivilege	4772	WMIC.exe
Token: SeSystemtimePrivilege	4772	WMIC.exe
Token: SeProfSingleProcessPrivilege	4772	WMIC.exe
Token: SeIncBasePriorityPrivilege	4772	WMIC.exe
Token: SeCreatePagefilePrivilege	4772	WMIC.exe
Token: SeBackupPrivilege	4772	WMIC.exe
Token: SeRestorePrivilege	4772	WMIC.exe
Token: SeShutdownPrivilege	4772	WMIC.exe
Token: SeDebugPrivilege	4772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4772	WMIC.exe
Token: SeRemoteShutdownPrivilege	4772	WMIC.exe
Token: SeUndockPrivilege	4772	WMIC.exe
Token: SeManageVolumePrivilege	4772	WMIC.exe
Token: 33	4772	WMIC.exe
Token: 34	4772	WMIC.exe
Token: 35	4772	WMIC.exe
Token: 36	4772	WMIC.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeSecurityPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeSecurityPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe
Token: SeSecurityPrivilege	35492	powershell.exe
Token: SeBackupPrivilege	35492	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
29252	OfficeC2RClient.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 2348	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	85
PID 3860 wrote to memory of 2348	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	85
PID 3860 wrote to memory of 1948	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	86
PID 3860 wrote to memory of 1948	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	86
PID 3860 wrote to memory of 1796	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	87
PID 3860 wrote to memory of 1796	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	87
PID 3860 wrote to memory of 3640	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	88
PID 3860 wrote to memory of 3640	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	88
PID 3860 wrote to memory of 4340	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	89
PID 3860 wrote to memory of 4340	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	89
PID 2348 wrote to memory of 4772	2348	cmd.exe	90
PID 2348 wrote to memory of 4772	2348	cmd.exe	90
PID 1948 wrote to memory of 35460	1948	cmd.exe	91
PID 1948 wrote to memory of 35460	1948	cmd.exe	91
PID 3640 wrote to memory of 35500	3640	cmd.exe	93
PID 3640 wrote to memory of 35500	3640	cmd.exe	93
PID 4340 wrote to memory of 35492	4340	cmd.exe	92
PID 4340 wrote to memory of 35492	4340	cmd.exe	92
PID 1796 wrote to memory of 50092	1796	cmd.exe	95
PID 1796 wrote to memory of 50092	1796	cmd.exe	95
PID 3860 wrote to memory of 34408	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	99
PID 3860 wrote to memory of 34408	3860	ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe	99
PID 34408 wrote to memory of 33808	34408	powershell.exe	100
PID 34408 wrote to memory of 33808	34408	powershell.exe	100
PID 34408 wrote to memory of 33512	34408	powershell.exe	101
PID 34408 wrote to memory of 33512	34408	powershell.exe	101
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32920 wrote to memory of 32488	32920	firefox.exe	107
PID 32012 wrote to memory of 31808	32012	chrome.exe	109
PID 32012 wrote to memory of 31808	32012	chrome.exe	109
PID 28576 wrote to memory of 29252	28576	WINWORD.EXE	117
PID 28576 wrote to memory of 29252	28576	WINWORD.EXE	117

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\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
"C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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:3860
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c wmic shadowcopy delete /nointeractive
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4772
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:35460
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} recoveryenabled No
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} recoveryenabled No
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:50092
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3640
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:35500
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4340
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:35492
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$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:34408
- - 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\873556499.png /f
    3⤵
    - Sets desktop wallpaper using registry
    PID:33808
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
    3⤵
    PID:33512

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:18816

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:32920
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe"
  2⤵
  PID:32488

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:32012
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ffa979ecc40,0x7ffa979ecc4c,0x7ffa979ecc58
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:31808

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\CheckpointStep.docx" /o ""
1⤵
- Suspicious use of WriteProcessMemory
PID:28576
- C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
  OfficeC2RClient.exe /error PID=28576 ProcessName="Microsoft Word" UIType=3 ErrorSource=0x8b10082a ErrorCode=0x80004005 ShowUI=1
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of SetWindowsHookEx
  PID:29252

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:28316

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\GET_YOUR_FILES_BACK.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:28180

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

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Downloads

C:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
c92c2b70fb37f84aab38412ad9226aa8

SHA1
14f2e9a83285612d0a7b2c83b8f89bccfde6c154

SHA256
d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

SHA512
04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\settings.dat

Filesize
40B

MD5
1fd21a5228803360e7498b21377bd349

SHA1
c028d9a423b995bb2f9d9b56ef09e5a4f9535b38

SHA256
920270c469d0fdd572881597d30bae6f24faec32c8a1e7e689186947ac7958d3

SHA512
c2324e1b0a32c3d4abdac5ee1c2e663d1e49c24c17f0b5a5dac56cc867f67d2665f29148de2773f2e048292b189d136876b557ae9837517f612155633cbb09b2

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
0ff7e1af4cc86e108eef582452b35523

SHA1
c2ccf2811d56c3a3a58dced2b07f95076c6b5b96

SHA256
62ed8ef2250f9f744852cb67df0286c80f94e26aed646989b76e5b78f2f1f0d0

SHA512
374675fd36cd8bc38acaec44d4cc855b85feece548d99616496d498e61e943fd695fec7c57550a58a32455e8b21b41bafa18cd1dadac69676fff1de1a56da937

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mel3tkee.cxx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/35492-15752-0x00007FFA96DC3000-0x00007FFA96DC5000-memory.dmp

Filesize
8KB

Download
memory/35492-15753-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp

Filesize
10.8MB

Download
memory/35492-15818-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp

Filesize
10.8MB

Download
memory/35492-15846-0x0000026D2ED50000-0x0000026D2ED72000-memory.dmp

Filesize
136KB

Download
memory/35492-22694-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp

Filesize
10.8MB

Download