avoslocker | f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78

Analysis

max time kernel
194s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 00:27

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General

Target

ransomware.exe
Size

807KB
MD5

8da384b2427b8397a5934182c159c257
SHA1

7bcd2d32a19c1ac7bd014dc9e64b806fdff5f5de
SHA256

f8e99bbacc62b0f72aa12f5f92e35607fa0382a881fe4a4b9476fc6b87a03c78
SHA512

3c4b1736efa48a4897769f12df488e60737523eaffc886ecfbd5b7191f058749bdb4a36feb067e8ca0ef418a7602b3390b6cf465412b88a4ba2fce8a4d670a89
SSDEEP

12288:0Z4s3rg9u/2/oT+NXtHLlP/O+OeO+OeNhBBhhBBAtHg9rjI+LXJ0ivlzkHBDsYAu:u4s+oT+NXBLi0rjFXvyHBlb6CZa8

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
38408	bcdedit.exe
38392	bcdedit.exe

Renames multiple (8484) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI	ransomware.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:	ransomware.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2106292078.png"	reg.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\Fonts\private\REFSAN.TTF	ransomware.exe
File created	C:\Program Files\Microsoft Office\Office16\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\ui-strings.js	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\zh-tw\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\adc_logo.png	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Dismiss.scale-80.png	ransomware.exe
File opened for modification	C:\Program Files\Windows Media Player\fr-FR\setup_wm.exe.mui	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\uk-ua\GET_YOUR_FILES_BACK.txt	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\da-dk\GET_YOUR_FILES_BACK.txt	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\sk-sk\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\fi-fi\ui-strings.js	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\Edit_R_Full.aapp	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Slice.thmx	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\Playstore\zh-cn_get.svg	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\AddressBook2x.png	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailWideTile.scale-200.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-140.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_F_COL.HXK	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\find-text.png	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\images\themeless\mobile_reader_logo.svg	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_logo_small.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\ClientARMRefer_eula.txt	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\OpenSSL64.DllA\openssl64.dlla.manifest	ransomware.exe
File created	C:\Program Files\Internet Explorer\ja-JP\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\en-US\rtscom.dll.mui	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_reject_18.svg	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\RHP_icons.png	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\en-gb\locimages\offsymsl.ttf	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\REFINED\PREVIEW.GIF	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\ARCTIC\ARCTIC.ELM	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxCalendarAppList.targetsize-256_altform-unplated.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Templates\1033\TimelessReport.dotx	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-pl.xrm-ms	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms	ransomware.exe
File created	C:\Program Files\Common Files\microsoft shared\Triedit\GET_YOUR_FILES_BACK.txt	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\msadc\en-US\msadcor.dll.mui	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\nb-no\ui-strings.js	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\js\nls\root\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\s_filter_18.svg	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-ppd.xrm-ms	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_MAK_AE-ul-oob.xrm-ms	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\css\main-selector.css	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\eu-es\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\large_trefoil_2x.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Trial-ul-oob.xrm-ms	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ppd.xrm-ms	ransomware.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipshrv.xml	ransomware.exe
File created	C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\fr\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\images\themes\dark\example_icons.png	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\TXP_TicketedEvent_Light.png	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vreg\office32mui.msi.16.en-us.vreg.dat	ransomware.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000049\index.win32.bundle	ransomware.exe
File opened for modification	C:\Program Files\Windows Defender\it-IT\ProtectionManagement.mfl	ransomware.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\en-ae\ui-strings.js	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\nl-nl\ui-strings.js	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\zh-tw\GET_YOUR_FILES_BACK.txt	ransomware.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\fi-fi\ui-strings.js	ransomware.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\ExchangeMediumTile.scale-100.png	ransomware.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\pl-pl\GET_YOUR_FILES_BACK.txt	ransomware.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ca@valencia\GET_YOUR_FILES_BACK.txt	ransomware.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
38428	powershell.exe
38316	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	msedge.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	msedge.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
38416	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
36092	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
1276	ransomware.exe
1276	ransomware.exe
38428	powershell.exe
38428	powershell.exe
38428	powershell.exe
38316	powershell.exe
38316	powershell.exe
33496	chrome.exe
33496	chrome.exe
33496	chrome.exe
33496	chrome.exe
33144	chrome.exe
33144	chrome.exe
33144	chrome.exe
33144	chrome.exe
32224	chrome.exe
32224	chrome.exe
32224	chrome.exe
32224	chrome.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe
31692	msedge.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	1276	ransomware.exe
Token: SeIncreaseQuotaPrivilege	38400	WMIC.exe
Token: SeSecurityPrivilege	38400	WMIC.exe
Token: SeTakeOwnershipPrivilege	38400	WMIC.exe
Token: SeLoadDriverPrivilege	38400	WMIC.exe
Token: SeSystemProfilePrivilege	38400	WMIC.exe
Token: SeSystemtimePrivilege	38400	WMIC.exe
Token: SeProfSingleProcessPrivilege	38400	WMIC.exe
Token: SeIncBasePriorityPrivilege	38400	WMIC.exe
Token: SeCreatePagefilePrivilege	38400	WMIC.exe
Token: SeBackupPrivilege	38400	WMIC.exe
Token: SeRestorePrivilege	38400	WMIC.exe
Token: SeShutdownPrivilege	38400	WMIC.exe
Token: SeDebugPrivilege	38400	WMIC.exe
Token: SeSystemEnvironmentPrivilege	38400	WMIC.exe
Token: SeRemoteShutdownPrivilege	38400	WMIC.exe
Token: SeUndockPrivilege	38400	WMIC.exe
Token: SeManageVolumePrivilege	38400	WMIC.exe
Token: 33	38400	WMIC.exe
Token: 34	38400	WMIC.exe
Token: 35	38400	WMIC.exe
Token: 36	38400	WMIC.exe
Token: SeDebugPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	15196	vssvc.exe
Token: SeRestorePrivilege	15196	vssvc.exe
Token: SeAuditPrivilege	15196	vssvc.exe
Token: SeIncreaseQuotaPrivilege	38400	WMIC.exe
Token: SeSecurityPrivilege	38400	WMIC.exe
Token: SeTakeOwnershipPrivilege	38400	WMIC.exe
Token: SeLoadDriverPrivilege	38400	WMIC.exe
Token: SeSystemProfilePrivilege	38400	WMIC.exe
Token: SeSystemtimePrivilege	38400	WMIC.exe
Token: SeProfSingleProcessPrivilege	38400	WMIC.exe
Token: SeIncBasePriorityPrivilege	38400	WMIC.exe
Token: SeCreatePagefilePrivilege	38400	WMIC.exe
Token: SeBackupPrivilege	38400	WMIC.exe
Token: SeRestorePrivilege	38400	WMIC.exe
Token: SeShutdownPrivilege	38400	WMIC.exe
Token: SeDebugPrivilege	38400	WMIC.exe
Token: SeSystemEnvironmentPrivilege	38400	WMIC.exe
Token: SeRemoteShutdownPrivilege	38400	WMIC.exe
Token: SeUndockPrivilege	38400	WMIC.exe
Token: SeManageVolumePrivilege	38400	WMIC.exe
Token: 33	38400	WMIC.exe
Token: 34	38400	WMIC.exe
Token: 35	38400	WMIC.exe
Token: 36	38400	WMIC.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeSecurityPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeSecurityPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe
Token: SeSecurityPrivilege	38428	powershell.exe
Token: SeBackupPrivilege	38428	powershell.exe

Suspicious use of WriteProcessMemory 58 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 1424	1276	ransomware.exe	84
PID 1276 wrote to memory of 1424	1276	ransomware.exe	84
PID 1276 wrote to memory of 736	1276	ransomware.exe	85
PID 1276 wrote to memory of 736	1276	ransomware.exe	85
PID 1276 wrote to memory of 2732	1276	ransomware.exe	86
PID 1276 wrote to memory of 2732	1276	ransomware.exe	86
PID 1276 wrote to memory of 1836	1276	ransomware.exe	87
PID 1276 wrote to memory of 1836	1276	ransomware.exe	87
PID 1276 wrote to memory of 2556	1276	ransomware.exe	88
PID 1276 wrote to memory of 2556	1276	ransomware.exe	88
PID 2732 wrote to memory of 38392	2732	cmd.exe	89
PID 2732 wrote to memory of 38392	2732	cmd.exe	89
PID 736 wrote to memory of 38416	736	cmd.exe	90
PID 736 wrote to memory of 38416	736	cmd.exe	90
PID 1424 wrote to memory of 38400	1424	cmd.exe	91
PID 1424 wrote to memory of 38400	1424	cmd.exe	91
PID 2556 wrote to memory of 38428	2556	cmd.exe	93
PID 2556 wrote to memory of 38428	2556	cmd.exe	93
PID 1836 wrote to memory of 38408	1836	cmd.exe	92
PID 1836 wrote to memory of 38408	1836	cmd.exe	92
PID 1276 wrote to memory of 38316	1276	ransomware.exe	98
PID 1276 wrote to memory of 38316	1276	ransomware.exe	98
PID 38316 wrote to memory of 37276	38316	powershell.exe	99
PID 38316 wrote to memory of 37276	38316	powershell.exe	99
PID 38316 wrote to memory of 37068	38316	powershell.exe	100
PID 38316 wrote to memory of 37068	38316	powershell.exe	100
PID 34060 wrote to memory of 33496	34060	chrome.exe	120
PID 34060 wrote to memory of 33496	34060	chrome.exe	120
PID 33072 wrote to memory of 33144	33072	chrome.exe	122
PID 33072 wrote to memory of 33144	33072	chrome.exe	122
PID 32260 wrote to memory of 32224	32260	chrome.exe	124
PID 32260 wrote to memory of 32224	32260	chrome.exe	124
PID 31752 wrote to memory of 31692	31752	msedge.exe	126
PID 31752 wrote to memory of 31692	31752	msedge.exe	126
PID 31140 wrote to memory of 31052	31140	private_browsing.exe	135
PID 31140 wrote to memory of 31052	31140	private_browsing.exe	135
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 31052 wrote to memory of 31012	31052	firefox.exe	136
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139
PID 30680 wrote to memory of 30648	30680	firefox.exe	139

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\ransomware.exe
"C:\Users\Admin\AppData\Local\Temp\ransomware.exe"
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c wmic shadowcopy delete /nointeractive
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:38400
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:736
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:38416
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} recoveryenabled No
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} recoveryenabled No
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:38392
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:38408
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:38428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$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;"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:38316
- - 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\2106292078.png /f
    3⤵
    - Sets desktop wallpaper using registry
    PID:37276
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
    3⤵
    PID:37068

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:15196

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:36092

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:34060
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ffa0381cc40,0x7ffa0381cc4c,0x7ffa0381cc58
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:33496

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:33072
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffa0381cc40,0x7ffa0381cc4c,0x7ffa0381cc58
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:33144

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:32260
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffa0381cc40,0x7ffa0381cc4c,0x7ffa0381cc58
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:32224

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:31752
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffa036d46f8,0x7ffa036d4708,0x7ffa036d4718
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:31692

C:\Program Files\Mozilla Firefox\private_browsing.exe
"C:\Program Files\Mozilla Firefox\private_browsing.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:31140
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe" -private-window
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:31052
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -private-window
    3⤵
    PID:31012

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:30680
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe"
  2⤵
  PID:30648

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:\Program Files\Google\Chrome\Application\debug.log

Filesize
174B

MD5
52ca62cbb1c10c4d6c2635573b5a666e

SHA1
79a238963b724d475d5602af536a5fe093b4d4c5

SHA256
743117cc83572e287f9f1a60fc5b00edc21c33801f28a736e823ec0ec519a3f4

SHA512
9ced465dcf9c99e61e70c0db15a772fe4b2e573deb7d2f34233ed9b1c0ea42f264d69a4d11b4e3566ec6e006603fc265c1d326f3b6322d747721c161f2e71257

Download Submit
C:\Program Files\Google\Chrome\Application\debug.log

Filesize
261B

MD5
6c1989d6a9df8728b43497c6bcc32dc9

SHA1
0660ecb83b45986989fbc634d30fca14c085644d

SHA256
8a9721165fd65c0eee6c06fce4d1a14090677890baa1e7f924cbd099f12ea826

SHA512
889e0d18ecbd1c6a695e1adb9335d9b65ba6bd6797d7546f7cb0c955656a5dd8f7bb3c1f129fc77b9202f896895eb6ed94d3021e3f01025ad5d3ff44c6ab4a7a

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\metadata

Filesize
114B

MD5
f75a04f9d74316b71a1620802ad67a53

SHA1
244676975ce159d0ee407a7c6db46e7c45c7c827

SHA256
539c82eea1310e04b200e7306cc93fc6fdcc8691d29a3b48456f834a0ffe6640

SHA512
63bbf7596f8228e824df42c24f9dd11e897dc08322713d48af00de52b8660a77877f7c0bd62005547bc52ea67f2cd074ae6a0e6d558ea12ebf9f67f2040ccc09

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\metadata

Filesize
212B

MD5
503fc4259219bbbbdbebba4de8dbea66

SHA1
38277998149997d0b094977e8454df1dae466fda

SHA256
59831b97df51c8b6665d965ad3ddc8c56faed5f5a2fafe370183fffa565bc295

SHA512
c9219e481b9ca27732c7ff75e5ce6beef04c868b19f559faf29169ccd75c12ba9637fc0b647592ac5d49562d3b29e6555228efcbbcbad1f0f1cc21de61296a9c

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\reports\45f551aa-ca2c-4309-9506-7acfdd406311.dmp

Filesize
130KB

MD5
3313b3722de32919a5d2f0a8b56f6431

SHA1
92600c9a83113f24374f6a2d2ddb1f0fa6e28990

SHA256
7456ea510a108f39cfbf0723c63f19dfeaf215ad40da89535c105bf625054820

SHA512
a924b97b1c62cbad271e42c990c8c36ced28a04870edc7148d7b8ba3a71b90093bf5292a2d0faf3bc50d191c4d2fac4deb3bf3b4d981db2a26a5cc436f54334b

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\reports\c6891d51-b638-44ba-afe9-7e10d0be54b3.dmp

Filesize
150KB

MD5
95f288d4f481af2866e7273b55e1638d

SHA1
023232524de97baef2ed4de4dfd896bd1285cc0f

SHA256
efc7749466ce07ea9ca37935b34ebe3d11dfcf0f9d18819f93d5ee3093b8298a

SHA512
7021a38bf0811a5bcd639b924e4ba84ddf2e19cdd9c53cd55fc8043ef42f9d6126e66329f0146afe2f25fbbfe51c7dd6bcc2f07f482c29173b5dae8bc2cf9ca2

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

Filesize
40B

MD5
53f896e6ec3a1c85c0d9124da3b7380e

SHA1
f4b222bb0b3fda0f2ab34768d1d086bc6533575e

SHA256
17445b99fe65252ca0a67cde3f5d2b1feb0224d39f52d1641ae0bb8dd0282453

SHA512
512cd2d07e1e7ebe78ddf8f5c5a682a30a0a9a1f55099a466ddd54c351295a92f4ac4946ebf4218d6353a3148ac38a2dbc07c9f96e12042868acce13c9edb1c3

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

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\reports\33247af9-88a6-4a07-b7e8-12bca368f775.dmp

Filesize
3.6MB

MD5
cfee16002d94db7e57e0e226471061fa

SHA1
8e379dfff213b7a41dbb8a0d7e8b6229233f7718

SHA256
10e2dab594d4c617b66c77c6b9d46fed6ba468a7df77cc347759edf818d97829

SHA512
c6b6a1f2222ef3daffff26d04112d968bf17c74c29c6636236634b67992b3a851412f87d6c702a9e422cab085f6cf1cedbcd5bf7c1f1f8b14f78aa8e6ad39c82

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
61cef8e38cd95bf003f5fdd1dc37dae1

SHA1
11f2f79ecb349344c143eea9a0fed41891a3467f

SHA256
ae671613623b4477fbd5daf1fd2d148ae2a09ddcc3804b2b6d4ffcb60b317e3e

SHA512
6fb9b333fe0e8fde19fdd0bd01a1990a4e60a87c0a02bc8297da1206e42f8690d06b030308e58c862e9e77714a585eed7cc1627590d99a10aeb77fc0dd3d864d

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

Filesize
64B

MD5
0ff7e1af4cc86e108eef582452b35523

SHA1
c2ccf2811d56c3a3a58dced2b07f95076c6b5b96

SHA256
62ed8ef2250f9f744852cb67df0286c80f94e26aed646989b76e5b78f2f1f0d0

SHA512
374675fd36cd8bc38acaec44d4cc855b85feece548d99616496d498e61e943fd695fec7c57550a58a32455e8b21b41bafa18cd1dadac69676fff1de1a56da937

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ars40wpm.wau.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
F:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
01188d22b1675e3437b1418e14f4ffab

SHA1
6e7127f3bbfce49485ed8f1acf8f697bcb952818

SHA256
e4b3ac00a0b2eb195b26abffbc4368077384e73393e51605edda17dae05ab7f2

SHA512
6903ae3247f32ad79c60a2062cd6a7bdbf5a7c9db1bdc43bdbef4da3396945014d30968ea4c8531a2d0c7b695f1ea36e2b8c51bb39cc6157c4096ac04a6e187d

Download Submit
memory/38428-17427-0x0000021ECD790000-0x0000021ECD7B2000-memory.dmp

Filesize
136KB

Download