avoslocker | 5277b6dfc55feb2002a93bc92a535360e29b738fb333db5f19be94d1c18b3e52

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 13:43

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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
1984	bcdedit.exe
2136	bcdedit.exe

Renames multiple (10439) 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
3008	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-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\563967512.png"	reg.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveProjectToolset\ProjectTool\Project Report Type\Fancy\MINUS.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15058_.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02009_.WMF	temp_executable.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\en-US\PhotoAcq.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Memo.emf	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\es-ES\setup_wm.exe.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBBA\MSPUB6.BDR	temp_executable.exe
File created	C:\Program Files (x86)\Common Files\System\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Windows Media Player\es-ES\setup_wm.exe.mui	temp_executable.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\it-IT\msdasqlr.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\fr-FR\js\RSSFeeds.js	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00011_.GIF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0297269.WMF	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\ado\it-IT\msader15.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\ink\de-DE\TipRes.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099196.GIF	temp_executable.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Resource\TypeSupport\Unicode\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Guadalcanal	temp_executable.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\SlideShow.Gadget\de-DE\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Installed_schemas14.xss	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\GRIP.JPG	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\ext\locale\updater_zh_CN.jar	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-modules-favorites.xml	temp_executable.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ru\LC_MESSAGES\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.equinox.p2.metadata.repository.nl_zh_4.4.0.v20140623020002.jar	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Noronha	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\12.png	temp_executable.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Oasis\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\INFOPATH_K_COL.HXK	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR6F.GIF	temp_executable.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\fr-FR\picturePuzzle.html	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\POST.CFG	temp_executable.exe
File created	C:\Program Files\Microsoft Games\Purble Place\it-IT\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\sk\LC_MESSAGES\vlc.mo	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_plain_Thumbnail.bmp	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\huemainsubpicture2.png	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-utilities_zh_CN.jar	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-modules-applemenu.jar	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.operations.nl_ja_4.4.0.v20140623020002.jar	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Clock.Gadget\ja-JP\js\timeZones.js	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0341742.JPG	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\review_same_reviewers.gif	temp_executable.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\de-DE\ImagingDevices.exe.mui	temp_executable.exe
File created	C:\Program Files\VideoLAN\VLC\lua\playlist\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\META-INF\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File created	C:\Program Files\VideoLAN\VLC\locale\or_IN\LC_MESSAGES\GET_YOUR_FILES_BACK.txt	temp_executable.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\ja\LC_MESSAGES\vlc.mo	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help.webapp.nl_zh_4.4.0.v20140623020002.jar	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\undocked_black_foggy.png	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\44.png	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Origin.thmx	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Effects\Perspective.eftx	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107042.WMF	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\configuration\org.eclipse.equinox.simpleconfigurator\bundles.info	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\jni_md.h	temp_executable.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Pretty_Peacock.jpg	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.transport.ecf.nl_zh_4.4.0.v20140623020002.jar	temp_executable.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_frame-shadow.png	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\en-US\MpAsDesc.dll.mui	temp_executable.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\VisioCustom.propdesc	temp_executable.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.jpg	temp_executable.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\tt\LC_MESSAGES\vlc.mo	temp_executable.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.publisher_1.3.0.v20140911-0143.jar	temp_executable.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2816	powershell.exe
4844	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
2904	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3008	temp_executable.exe
2816	powershell.exe
4844	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	3008	temp_executable.exe
Token: SeIncreaseQuotaPrivilege	1624	WMIC.exe
Token: SeSecurityPrivilege	1624	WMIC.exe
Token: SeTakeOwnershipPrivilege	1624	WMIC.exe
Token: SeLoadDriverPrivilege	1624	WMIC.exe
Token: SeSystemProfilePrivilege	1624	WMIC.exe
Token: SeSystemtimePrivilege	1624	WMIC.exe
Token: SeProfSingleProcessPrivilege	1624	WMIC.exe
Token: SeIncBasePriorityPrivilege	1624	WMIC.exe
Token: SeCreatePagefilePrivilege	1624	WMIC.exe
Token: SeBackupPrivilege	1624	WMIC.exe
Token: SeRestorePrivilege	1624	WMIC.exe
Token: SeShutdownPrivilege	1624	WMIC.exe
Token: SeDebugPrivilege	1624	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1624	WMIC.exe
Token: SeRemoteShutdownPrivilege	1624	WMIC.exe
Token: SeUndockPrivilege	1624	WMIC.exe
Token: SeManageVolumePrivilege	1624	WMIC.exe
Token: 33	1624	WMIC.exe
Token: 34	1624	WMIC.exe
Token: 35	1624	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1624	WMIC.exe
Token: SeSecurityPrivilege	1624	WMIC.exe
Token: SeTakeOwnershipPrivilege	1624	WMIC.exe
Token: SeLoadDriverPrivilege	1624	WMIC.exe
Token: SeSystemProfilePrivilege	1624	WMIC.exe
Token: SeSystemtimePrivilege	1624	WMIC.exe
Token: SeProfSingleProcessPrivilege	1624	WMIC.exe
Token: SeIncBasePriorityPrivilege	1624	WMIC.exe
Token: SeCreatePagefilePrivilege	1624	WMIC.exe
Token: SeBackupPrivilege	1624	WMIC.exe
Token: SeRestorePrivilege	1624	WMIC.exe
Token: SeShutdownPrivilege	1624	WMIC.exe
Token: SeDebugPrivilege	1624	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1624	WMIC.exe
Token: SeRemoteShutdownPrivilege	1624	WMIC.exe
Token: SeUndockPrivilege	1624	WMIC.exe
Token: SeManageVolumePrivilege	1624	WMIC.exe
Token: 33	1624	WMIC.exe
Token: 34	1624	WMIC.exe
Token: 35	1624	WMIC.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	4900	vssvc.exe
Token: SeRestorePrivilege	4900	vssvc.exe
Token: SeAuditPrivilege	4900	vssvc.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2816	powershell.exe
Token: SeSecurityPrivilege	2816	powershell.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 3008	2400	testing.exe	31
PID 2400 wrote to memory of 3008	2400	testing.exe	31
PID 2400 wrote to memory of 3008	2400	testing.exe	31
PID 2400 wrote to memory of 3008	2400	testing.exe	31
PID 3008 wrote to memory of 1948	3008	temp_executable.exe	33
PID 3008 wrote to memory of 1948	3008	temp_executable.exe	33
PID 3008 wrote to memory of 1948	3008	temp_executable.exe	33
PID 3008 wrote to memory of 1948	3008	temp_executable.exe	33
PID 3008 wrote to memory of 2936	3008	temp_executable.exe	34
PID 3008 wrote to memory of 2936	3008	temp_executable.exe	34
PID 3008 wrote to memory of 2936	3008	temp_executable.exe	34
PID 3008 wrote to memory of 2936	3008	temp_executable.exe	34
PID 3008 wrote to memory of 1964	3008	temp_executable.exe	35
PID 3008 wrote to memory of 1964	3008	temp_executable.exe	35
PID 3008 wrote to memory of 1964	3008	temp_executable.exe	35
PID 3008 wrote to memory of 1964	3008	temp_executable.exe	35
PID 3008 wrote to memory of 2332	3008	temp_executable.exe	36
PID 3008 wrote to memory of 2332	3008	temp_executable.exe	36
PID 3008 wrote to memory of 2332	3008	temp_executable.exe	36
PID 3008 wrote to memory of 2332	3008	temp_executable.exe	36
PID 3008 wrote to memory of 2340	3008	temp_executable.exe	37
PID 3008 wrote to memory of 2340	3008	temp_executable.exe	37
PID 3008 wrote to memory of 2340	3008	temp_executable.exe	37
PID 3008 wrote to memory of 2340	3008	temp_executable.exe	37
PID 2340 wrote to memory of 2816	2340	cmd.exe	38
PID 2340 wrote to memory of 2816	2340	cmd.exe	38
PID 2340 wrote to memory of 2816	2340	cmd.exe	38
PID 1964 wrote to memory of 1984	1964	cmd.exe	39
PID 1964 wrote to memory of 1984	1964	cmd.exe	39
PID 1964 wrote to memory of 1984	1964	cmd.exe	39
PID 1948 wrote to memory of 1624	1948	cmd.exe	40
PID 1948 wrote to memory of 1624	1948	cmd.exe	40
PID 1948 wrote to memory of 1624	1948	cmd.exe	40
PID 2332 wrote to memory of 2136	2332	cmd.exe	41
PID 2332 wrote to memory of 2136	2332	cmd.exe	41
PID 2332 wrote to memory of 2136	2332	cmd.exe	41
PID 2936 wrote to memory of 2904	2936	cmd.exe	42
PID 2936 wrote to memory of 2904	2936	cmd.exe	42
PID 2936 wrote to memory of 2904	2936	cmd.exe	42
PID 3008 wrote to memory of 4844	3008	temp_executable.exe	48
PID 3008 wrote to memory of 4844	3008	temp_executable.exe	48
PID 3008 wrote to memory of 4844	3008	temp_executable.exe	48
PID 3008 wrote to memory of 4844	3008	temp_executable.exe	48
PID 4844 wrote to memory of 1320	4844	powershell.exe	49
PID 4844 wrote to memory of 1320	4844	powershell.exe	49
PID 4844 wrote to memory of 1320	4844	powershell.exe	49
PID 4844 wrote to memory of 208	4844	powershell.exe	50
PID 4844 wrote to memory of 208	4844	powershell.exe	50
PID 4844 wrote to memory of 208	4844	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:2400
- 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:3008
- - C:\Windows\system32\cmd.exe
    cmd /c wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete /nointeractive
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1624
- - C:\Windows\system32\cmd.exe
    cmd /c vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:2904
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} recoveryenabled No
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1964
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled No
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1984
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2332
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2136
- - C:\Windows\system32\cmd.exe
    cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2816
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "$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;"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4844
  - - 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\563967512.png /f
      4⤵
      Sets desktop wallpaper using registry
      PID:1320
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
      4⤵
      PID:208

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4900

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:\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
590e36fe46c3b4d39113c4d9888b24c9

SHA1
35d416c2c806e5ed989afdc6402a0018c7ba8661

SHA256
8c53aca8e60804eaa5ee81e7e6a0d23c05fd4738cae76cc6b4454956d1bb7b18

SHA512
3130e099bdef70f7188f2aa59a1abd36837f1b86f7f3bb169e93faa7e5f4ea9cc7b1027d8eb7f0683e3f013b29086ea0d1d1fa12472c7ab98767c4a26b7b0290

Download Submit
F:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
c92c2b70fb37f84aab38412ad9226aa8

SHA1
14f2e9a83285612d0a7b2c83b8f89bccfde6c154

SHA256
d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

SHA512
04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

Download Submit
memory/2400-4-0x000000013F2B0000-0x000000013F3FD000-memory.dmp

Filesize
1.3MB

Download
memory/2816-672-0x000000001B870000-0x000000001BB52000-memory.dmp

Filesize
2.9MB

Download
memory/2816-673-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/4844-24630-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/4844-24631-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download