Malware Analysis Report

2025-01-22 20:51

Sample ID 241225-cf4gestpbt
Target test.exe
SHA256 06918af465e607aa81a46042c24e6a8c45d7c983f33ee621caad6b25464dd27a
Tags
avoslocker defense_evasion discovery evasion execution impact ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

06918af465e607aa81a46042c24e6a8c45d7c983f33ee621caad6b25464dd27a

Threat Level: Known bad

The file test.exe was found to be: Known bad.

Malicious Activity Summary

avoslocker defense_evasion discovery evasion execution impact ransomware

Avoslocker Ransomware

Avoslocker family

Renames multiple (10424) files with added filename extension

Deletes shadow copies

Modifies boot configuration data using bcdedit

Renames multiple (8514) files with added filename extension

Enumerates connected drives

Drops desktop.ini file(s)

Sets desktop wallpaper using registry

Drops file in Program Files directory

Command and Scripting Interpreter: PowerShell

System Location Discovery: System Language Discovery

Unsigned PE

Interacts with shadow copies

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-25 02:02

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-25 02:02

Reported

2024-12-25 02:04

Platform

win7-20240903-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\test.exe"

Signatures

Avoslocker Ransomware

ransomware avoslocker

Avoslocker family

avoslocker

Deletes shadow copies

ransomware defense_evasion impact execution

Modifies boot configuration data using bcdedit

ransomware evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\bcdedit.exe N/A
N/A N/A C:\Windows\system32\bcdedit.exe N/A

Renames multiple (10424) files with added filename extension

ransomware

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\DESKTOP.INI C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1638129618.png" C:\Windows\system32\reg.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\images\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\lib\locale\jfluid-server_ja.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.swt.nl_ja_4.4.0.v20140623020002.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18227_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02752G.GIF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Common Files\microsoft shared\TextConv\en-US\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\de-DE\js\settings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Currency.Gadget\images\base-undocked-4.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Java\jdk1.7.0_80\include\win32\bridge\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_ja_JP.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Windows Media Player\es-ES\WMPDMC.exe.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD02153_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105298.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Common Files\System\msadc\es-ES\msadcer.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BS00200_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\STRTEDGE\STRTEDGE.INF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\diner_settings.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-swing-plaf_zh_CN.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\lib\pop3.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\MP00021_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\GRPHFLT\PNG32.FLT C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-lib-profiler-charts_zh_CN.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jre7\lib\zi\Europe\Warsaw C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\dt.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-modules-masterfs.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\SlideShow.Gadget\images\play_rest.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\Adobe AIR\Versions\1.0\digest.s C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\warning.gif C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\INDUST\THMBNAIL.PNG C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\UnblockDeny.aif C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-sampler.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\es-ES\mip.exe.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PROOF\MSSP7EN.LEX C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGMN044.XML C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH00669_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WB01748_.GIF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.core.net.win32.x86_64.nl_zh_4.4.0.v20140623020002.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\p2\org.eclipse.equinox.p2.core\cache\artifacts.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\MSBuild\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA01154_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00222_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Nauru C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0384895.JPG C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Microsoft Games\Multiplayer\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0090087.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Atlantic\Bermuda C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\System\msadc\ja-JP\msdaprsr.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\it-IT\weather.html C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Windows Journal\ja-JP\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator.nl_ja_4.4.0.v20140623020002.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Windows Media Player\it-IT\wmpnssui.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGMN011.XML C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WB01242_.GIF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Common Files\microsoft shared\TRANSLAT\FRAR\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\ink\es-ES\mshwLatin.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\VideoLAN\VLC\locale\zh_TW\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Microsoft Office\Office14\PUBBA\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18194_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Median.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TN00330_.WMF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\ink\ja-JP\InkObj.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins3d\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\test.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 2132 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2132 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2132 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2132 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2516 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2516 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2516 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 1916 wrote to memory of 2516 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\system32\cmd.exe
PID 2516 wrote to memory of 3392 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2516 wrote to memory of 3392 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2516 wrote to memory of 3392 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2132 wrote to memory of 3524 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\Wbem\WMIC.exe
PID 2132 wrote to memory of 3524 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\Wbem\WMIC.exe
PID 2132 wrote to memory of 3524 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\Wbem\WMIC.exe
PID 2124 wrote to memory of 3736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2124 wrote to memory of 3736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2124 wrote to memory of 3736 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2628 wrote to memory of 3800 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2628 wrote to memory of 3800 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2628 wrote to memory of 3800 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2828 wrote to memory of 3792 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2828 wrote to memory of 3792 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2828 wrote to memory of 3792 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 1916 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1240 wrote to memory of 1820 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\reg.exe
PID 1240 wrote to memory of 1820 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\reg.exe
PID 1240 wrote to memory of 1820 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\reg.exe
PID 1240 wrote to memory of 3308 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\rundll32.exe
PID 1240 wrote to memory of 3308 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\rundll32.exe
PID 1240 wrote to memory of 3308 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\rundll32.exe

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\test.exe

"C:\Users\Admin\AppData\Local\Temp\test.exe"

C:\Windows\system32\cmd.exe

cmd /c wmic shadowcopy delete /nointeractive

C:\Windows\system32\cmd.exe

cmd /c vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\system32\cmd.exe

cmd /c bcdedit /set {default} recoveryenabled No

C:\Windows\system32\cmd.exe

cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures

C:\Windows\system32\cmd.exe

cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"

C:\Windows\System32\Wbem\WMIC.exe

wmic shadowcopy delete /nointeractive

C:\Windows\system32\vssadmin.exe

vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} bootstatuspolicy ignoreallfailures

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} recoveryenabled No

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

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;"

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\1638129618.png /f

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False

Network

N/A

Files

C:\GET_YOUR_FILES_BACK.txt

MD5 c92c2b70fb37f84aab38412ad9226aa8
SHA1 14f2e9a83285612d0a7b2c83b8f89bccfde6c154
SHA256 d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f
SHA512 04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

memory/3392-1370-0x000000001B5B0000-0x000000001B892000-memory.dmp

memory/3392-1372-0x0000000001E80000-0x0000000001E88000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\R35F5XS3MA55EO9W72NE.temp

MD5 76749c8b341b10562c938a226b3ff25f
SHA1 8db1fc670821165e1f32e801eb7767c5bb18513a
SHA256 5626950a97b8b88e55c065bb66032ce2e0b906f9da5e05c81e2bc5fb6639875d
SHA512 25f89d72ce35f87a1994c635db50611a435371c79166db8cbbaa8dbafe07c94a3ba8d8f34aa728424a19553ab887c3a33fd2720f65b90ec3054effaa52348cf1

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 4675ae8a2efa6580ccba58146a123222
SHA1 d911de54753a24903ac497fa0e2666564707c6c2
SHA256 78ac97fe1f5308e841ffae6369fbeff6c3560fb9246a7d00ecb3e94879da0a7d
SHA512 f0fba8c628567ddd9c7683c06939d15531a772db51a5ac0584ab3d5fdf910c27a6f99320f5cf2cf7844d56da72dfe8c0bf0fa5fc5fed451f189fefdfb906b3d0

memory/1240-24595-0x000000001B660000-0x000000001B942000-memory.dmp

memory/1240-24596-0x0000000001E10000-0x0000000001E18000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\1638129618.png

MD5 1102d805d581b2642cec9945747c8968
SHA1 272aa475615770fe25968fc1787353ca08c89953
SHA256 59fde654769fa30863cfb5ae13b21c5adb797f59d810471ea47cf46c2f0dacc0
SHA512 aa3b456f24f541a9408653984d8916ba7e6eb7c18f3e0a054f01836c4ec0bfd3c186e7369a077adef7ee73b5452b3ad87b8a3b338aebe5482171e5fdbf1b54c0

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-25 02:02

Reported

2024-12-25 02:04

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\test.exe"

Signatures

Avoslocker Ransomware

ransomware avoslocker

Avoslocker family

avoslocker

Deletes shadow copies

ransomware defense_evasion impact execution

Modifies boot configuration data using bcdedit

ransomware evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\bcdedit.exe N/A
N/A N/A C:\Windows\system32\bcdedit.exe N/A

Renames multiple (8514) files with added filename extension

ransomware

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1941993070.png" C:\Windows\system32\reg.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\fi-fi\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\Playstore\th_get.svg C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\images\rhp_world_icon.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\it-it\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Extensions\external_extensions.json.DATA C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\js\plugins\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\plugins\exportpdf-tool-view.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\1949_24x24x32.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailLargeTile.scale-150.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PREVIEWTEMPLATE2.POTX C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Windows NT\TableTextService\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\LAYERS\PREVIEW.GIF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\fr\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\sk-sk\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_reminders_18.svg C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Generic-Dark.scale-400.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows NT\Accessories\ja-JP\wordpad.exe.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Media Player\en-US\mpvis.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSIPC\lt\msipc.dll.mui C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Trial-ul-oob.xrm-ms C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\nb-no\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Common Files\System\ado\msado60.tlb C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ul-oob.xrm-ms C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\pt-br\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-ul-oob.xrm-ms C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-ppd.xrm-ms C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\legal\jdk\freebxml.md C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\ICE\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\nb-no\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\offsymk.ttf C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\viewer\nls\es-es\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailBadge.scale-400.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-pl.xrm-ms C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\pl-pl\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\Playstore\id_get.svg C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\tr-tr\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\es-es\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\en-il\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\sl-si\ui-strings.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\images\themeless\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsPowerShell\Modules\Pester\3.4.0\Snippets\ShouldBe.snippets.ps1xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\themes\dark\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\PROOF\MSSP7EN.LEX C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000050\FA000000050 C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\RMNSQUE\PREVIEW.GIF C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\plugin.js C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\hi_contrast\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\unlimited\US_export_policy.jar C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipsar.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\viewer\nls\zh-cn\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\[email protected] C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\css\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_download_audit_report_18.svg C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\ExchangeWideTile.scale-125.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Trust Protection Lists\Sigma\Cryptomining C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\file_info.png C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\sendforsignature.svg C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Templates\1033\RedAndBlackLetter.dotx C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\rsod\excelmui.msi.16.en-us.tree.dat C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\GET_YOUR_FILES_BACK.txt C:\Users\Admin\AppData\Local\Temp\test.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Slipstream.xml C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\test.exe N/A

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\test.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4524 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 1692 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 1692 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 672 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 4524 wrote to memory of 672 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\SYSTEM32\cmd.exe
PID 1692 wrote to memory of 34308 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1692 wrote to memory of 34308 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2844 wrote to memory of 34300 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 2844 wrote to memory of 34300 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 1684 wrote to memory of 34316 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 1684 wrote to memory of 34316 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\bcdedit.exe
PID 672 wrote to memory of 39292 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 672 wrote to memory of 39292 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2908 wrote to memory of 39300 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\Wbem\WMIC.exe
PID 2908 wrote to memory of 39300 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\Wbem\WMIC.exe
PID 4524 wrote to memory of 23320 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4524 wrote to memory of 23320 N/A C:\Users\Admin\AppData\Local\Temp\test.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 23320 wrote to memory of 24448 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\reg.exe
PID 23320 wrote to memory of 24448 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\reg.exe
PID 23320 wrote to memory of 24904 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\rundll32.exe
PID 23320 wrote to memory of 24904 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\rundll32.exe

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\test.exe

"C:\Users\Admin\AppData\Local\Temp\test.exe"

C:\Windows\SYSTEM32\cmd.exe

cmd /c wmic shadowcopy delete /nointeractive

C:\Windows\SYSTEM32\cmd.exe

cmd /c vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\SYSTEM32\cmd.exe

cmd /c bcdedit /set {default} recoveryenabled No

C:\Windows\SYSTEM32\cmd.exe

cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures

C:\Windows\SYSTEM32\cmd.exe

cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} recoveryenabled No

C:\Windows\system32\vssadmin.exe

vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} bootstatuspolicy ignoreallfailures

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"

C:\Windows\System32\Wbem\WMIC.exe

wmic shadowcopy delete /nointeractive

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -Command "$a = [System.IO.File]::ReadAllText(\"F:\GET_YOUR_FILES_BACK.txt\");Add-Type -AssemblyName System.Drawing;$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;"

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\1941993070.png /f

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

F:\$RECYCLE.BIN\GET_YOUR_FILES_BACK.txt

MD5 c92c2b70fb37f84aab38412ad9226aa8
SHA1 14f2e9a83285612d0a7b2c83b8f89bccfde6c154
SHA256 d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f
SHA512 04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1flpscyn.wxb.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/39292-16836-0x000001EC66F90000-0x000001EC66FB2000-memory.dmp

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

MD5 d8b9a260789a22d72263ef3bb119108c
SHA1 376a9bd48726f422679f2cd65003442c0b6f6dd5
SHA256 d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc
SHA512 550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

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

MD5 6cf293cb4d80be23433eecf74ddb5503
SHA1 24fe4752df102c2ef492954d6b046cb5512ad408
SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
SHA512 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00