avoslocker | 8c09852891a594c9327627c7fd3a6167281bc6285661510bd6d605adab9b6d6f

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 00:12

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General

Target

sex.exe
Size

1.6MB
MD5

32d34c51bc6fc4eddb6fdf80ea8c574f
SHA1

c3f3f908a927597c114c046d0f2a7ef4e76cb46b
SHA256

8c09852891a594c9327627c7fd3a6167281bc6285661510bd6d605adab9b6d6f
SHA512

42b5035a13c949c7a170b393437e71fb43f96dce84a40541efaed9a277b77f8001d949d1b2209e3d70a4eb2f517bc5c6f978e54d2a20eaddf591cfe61e28cab5
SSDEEP

24576:KImw98okVgela0as5CqLVO7XJCjkD3N0HRAxV0aEhbHdn0TrldepPZ:0L5ljasaUKeaEhDF

Score

10^/10

avoslocker defense_evasion discovery evasion execution impact ransomware upx

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
1884	bcdedit.exe
3860	bcdedit.exe

Renames multiple (10418) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 2 IoCs

pid	Process
2888	hack.exe
2972	Firefox Installer.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	hack.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:	hack.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-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1153038678.png"	reg.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2972-12-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral1/files/0x0008000000016df5-11.dat	upx
behavioral1/memory/2972-17-0x0000000000400000-0x0000000000446000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\DESIGNER\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Apia	hack.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SceneButtonInset_Alpha1.png	hack.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\Perf_Scenes_Mask1.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBBA\MSPUB5B.BDR	hack.exe
File created	C:\Program Files\VideoLAN\VLC\locale\gd\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\120DPI\(120DPI)redStateIcon.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\SoftBlue\tab_off.gif	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099196.GIF	hack.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\cgg\LC_MESSAGES\vlc.mo	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Argentina\San_Luis	hack.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\btn_close_over.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH02166_.WMF	hack.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\Triedit\de-DE\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\EDGE\PREVIEW.GIF	hack.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\server_ok.gif	hack.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\dialogs\stream_window.html	hack.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Spades\es-ES\ShvlRes.dll.mui	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ui.sdk.scheduler.nl_zh_4.4.0.v20140623020002.jar	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\FormsStyles\BrightYellow.css	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\mset7ge.kic	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02746G.GIF	hack.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\MET	hack.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Etc\GMT+4	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\EquityFax.Dotx	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PARNT_07.MID	hack.exe
File opened for modification	C:\Program Files\Windows Media Player\es-ES\wmpnscfg.exe.mui	hack.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\ja-JP\TableTextService.dll.mui	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH00334_.WMF	hack.exe
File created	C:\Program Files\MSBuild\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\America\Tijuana	hack.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Sand_Paper.jpg	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\1033\License Agreements\SynchronizationEula.rtf	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\OliveGreen.css	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PSRCHKEY.DAT	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TN00234_.WMF	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification.zh_CN_5.5.0.165303.jar	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Damascus	hack.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\SlideShow.Gadget\images\play_hov.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\MSPUB.DEV_K_COL.HXK	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\SpringGreen\TAB_OFF.GIF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00158_.GIF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0152688.WMF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00494_.WMF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SL00286_.WMF	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\amd64\jvm.cfg	hack.exe
File created	C:\Program Files (x86)\Windows Sidebar\de-DE\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Edmonton	hack.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_btn-over-DOT.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD01196_.WMF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105396.WMF	hack.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\fr-FR\css\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_48.png	hack.exe
File created	C:\Program Files\VideoLAN\VLC\locale\pt_BR\LC_MESSAGES\GET_YOUR_FILES_BACK.txt	hack.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\fr-FR\sqlxmlx.rll.mui	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\SoftBlue\TAB_ON.GIF	hack.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\docked_black_moon-waxing-crescent_partly-cloudy.png	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\Discussion.gta	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD10302_.GIF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0215070.WMF	hack.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00934_.WMF	hack.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\SlideShow.Gadget\ja-JP\GET_YOUR_FILES_BACK.txt	hack.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\de-DE\css\GET_YOUR_FILES_BACK.txt	hack.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
880	powershell.exe
5096	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 2 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	Firefox Installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hack.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
1124	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2888	hack.exe
880	powershell.exe
5096	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	2888	hack.exe
Token: SeBackupPrivilege	3624	vssvc.exe
Token: SeRestorePrivilege	3624	vssvc.exe
Token: SeAuditPrivilege	3624	vssvc.exe
Token: SeDebugPrivilege	880	powershell.exe
Token: SeIncreaseQuotaPrivilege	3508	WMIC.exe
Token: SeSecurityPrivilege	3508	WMIC.exe
Token: SeTakeOwnershipPrivilege	3508	WMIC.exe
Token: SeLoadDriverPrivilege	3508	WMIC.exe
Token: SeSystemProfilePrivilege	3508	WMIC.exe
Token: SeSystemtimePrivilege	3508	WMIC.exe
Token: SeProfSingleProcessPrivilege	3508	WMIC.exe
Token: SeIncBasePriorityPrivilege	3508	WMIC.exe
Token: SeCreatePagefilePrivilege	3508	WMIC.exe
Token: SeBackupPrivilege	3508	WMIC.exe
Token: SeRestorePrivilege	3508	WMIC.exe
Token: SeShutdownPrivilege	3508	WMIC.exe
Token: SeDebugPrivilege	3508	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3508	WMIC.exe
Token: SeRemoteShutdownPrivilege	3508	WMIC.exe
Token: SeUndockPrivilege	3508	WMIC.exe
Token: SeManageVolumePrivilege	3508	WMIC.exe
Token: 33	3508	WMIC.exe
Token: 34	3508	WMIC.exe
Token: 35	3508	WMIC.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeIncreaseQuotaPrivilege	3508	WMIC.exe
Token: SeSecurityPrivilege	3508	WMIC.exe
Token: SeTakeOwnershipPrivilege	3508	WMIC.exe
Token: SeLoadDriverPrivilege	3508	WMIC.exe
Token: SeSystemProfilePrivilege	3508	WMIC.exe
Token: SeSystemtimePrivilege	3508	WMIC.exe
Token: SeProfSingleProcessPrivilege	3508	WMIC.exe
Token: SeIncBasePriorityPrivilege	3508	WMIC.exe
Token: SeCreatePagefilePrivilege	3508	WMIC.exe
Token: SeBackupPrivilege	3508	WMIC.exe
Token: SeRestorePrivilege	3508	WMIC.exe
Token: SeShutdownPrivilege	3508	WMIC.exe
Token: SeDebugPrivilege	3508	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3508	WMIC.exe
Token: SeRemoteShutdownPrivilege	3508	WMIC.exe
Token: SeUndockPrivilege	3508	WMIC.exe
Token: SeManageVolumePrivilege	3508	WMIC.exe
Token: 33	3508	WMIC.exe
Token: 34	3508	WMIC.exe
Token: 35	3508	WMIC.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe
Token: SeBackupPrivilege	880	powershell.exe
Token: SeSecurityPrivilege	880	powershell.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2888	1580	sex.exe	31
PID 1580 wrote to memory of 2888	1580	sex.exe	31
PID 1580 wrote to memory of 2888	1580	sex.exe	31
PID 1580 wrote to memory of 2888	1580	sex.exe	31
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 1580 wrote to memory of 2972	1580	sex.exe	33
PID 2888 wrote to memory of 2624	2888	hack.exe	34
PID 2888 wrote to memory of 2624	2888	hack.exe	34
PID 2888 wrote to memory of 2624	2888	hack.exe	34
PID 2888 wrote to memory of 2624	2888	hack.exe	34
PID 2888 wrote to memory of 2944	2888	hack.exe	35
PID 2888 wrote to memory of 2944	2888	hack.exe	35
PID 2888 wrote to memory of 2944	2888	hack.exe	35
PID 2888 wrote to memory of 2944	2888	hack.exe	35
PID 2888 wrote to memory of 2952	2888	hack.exe	36
PID 2888 wrote to memory of 2952	2888	hack.exe	36
PID 2888 wrote to memory of 2952	2888	hack.exe	36
PID 2888 wrote to memory of 2952	2888	hack.exe	36
PID 2888 wrote to memory of 2616	2888	hack.exe	38
PID 2888 wrote to memory of 2616	2888	hack.exe	38
PID 2888 wrote to memory of 2616	2888	hack.exe	38
PID 2888 wrote to memory of 2616	2888	hack.exe	38
PID 2888 wrote to memory of 2760	2888	hack.exe	39
PID 2888 wrote to memory of 2760	2888	hack.exe	39
PID 2888 wrote to memory of 2760	2888	hack.exe	39
PID 2888 wrote to memory of 2760	2888	hack.exe	39
PID 2944 wrote to memory of 1124	2944	cmd.exe	40
PID 2944 wrote to memory of 1124	2944	cmd.exe	40
PID 2944 wrote to memory of 1124	2944	cmd.exe	40
PID 2616 wrote to memory of 1884	2616	cmd.exe	41
PID 2616 wrote to memory of 1884	2616	cmd.exe	41
PID 2616 wrote to memory of 1884	2616	cmd.exe	41
PID 2760 wrote to memory of 880	2760	cmd.exe	42
PID 2760 wrote to memory of 880	2760	cmd.exe	42
PID 2760 wrote to memory of 880	2760	cmd.exe	42
PID 2952 wrote to memory of 3860	2952	cmd.exe	44
PID 2952 wrote to memory of 3860	2952	cmd.exe	44
PID 2952 wrote to memory of 3860	2952	cmd.exe	44
PID 2624 wrote to memory of 3508	2624	cmd.exe	45
PID 2624 wrote to memory of 3508	2624	cmd.exe	45
PID 2624 wrote to memory of 3508	2624	cmd.exe	45
PID 2888 wrote to memory of 5096	2888	hack.exe	49
PID 2888 wrote to memory of 5096	2888	hack.exe	49
PID 2888 wrote to memory of 5096	2888	hack.exe	49
PID 2888 wrote to memory of 5096	2888	hack.exe	49
PID 5096 wrote to memory of 3656	5096	powershell.exe	50
PID 5096 wrote to memory of 3656	5096	powershell.exe	50
PID 5096 wrote to memory of 3656	5096	powershell.exe	50
PID 5096 wrote to memory of 3336	5096	powershell.exe	51
PID 5096 wrote to memory of 3336	5096	powershell.exe	51
PID 5096 wrote to memory of 3336	5096	powershell.exe	51

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\sex.exe
"C:\Users\Admin\AppData\Local\Temp\sex.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\AppData\Local\Temp\hack.exe
  "C:\Users\Admin\AppData\Local\Temp\hack.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:2888
- - C:\Windows\system32\cmd.exe
    cmd /c wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete /nointeractive
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3508
- - C:\Windows\system32\cmd.exe
    cmd /c vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2944
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:1124
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} recoveryenabled No
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2952
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled No
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3860
- - C:\Windows\system32\cmd.exe
    cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2616
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1884
- - C:\Windows\system32\cmd.exe
    cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2760
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:880
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "$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:5096
  - - 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\1153038678.png /f
      4⤵
      Sets desktop wallpaper using registry
      PID:3656
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
      4⤵
      PID:3336
- C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe
  "C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2972
- - C:\Users\Admin\AppData\Local\Temp\7zSC9B67BD6\setup-stub.exe
    .\setup-stub.exe
    3⤵
    PID:3064

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
c92c2b70fb37f84aab38412ad9226aa8

SHA1
14f2e9a83285612d0a7b2c83b8f89bccfde6c154

SHA256
d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

SHA512
04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

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

Filesize
364KB

MD5
530894a1f0eb42c7837db4d74829f5c6

SHA1
99909db6f574ca964a9b822b9b19fd2e851b8c1e

SHA256
aac3ce797f50e0a5b9f1b43aaaffb439d4c42e3cf5b9fbeac52fa3d263fde3d0

SHA512
0836dd919c5f5648ce3445f9a3c84afe5e1e694ff998f1204498b2a86b13ed297469bea88af0ad7e49c97cd57153c7c43fd0a311b4c2685f4dfca5574d1d10f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\hack.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
138e47a6372a99a0079e2fa21bcff5d3

SHA1
0e7f2b935845f0fab45d1326c97188b8e30e4a7b

SHA256
0be797b4562bc1fdaa2d6a2af9ba7cc96da73832992cebc8068d3c34634798e6

SHA512
c4c2b1e6c91e19bec6841acfe43f317acfd9eef28314c6e577b799c7e04dce1a451e3e1b34dd189d5c5ddf7b5fba393650d7e12a19c4e91320d7d83a5fb542d4

Download Submit
memory/880-1501-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/880-1520-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/1580-10-0x000000013F070000-0x000000013F209000-memory.dmp

Filesize
1.6MB

Download
memory/2972-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2972-17-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/5096-24603-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/5096-24604-0x00000000027F0000-0x00000000027F8000-memory.dmp

Filesize
32KB

Download