Analysis
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max time kernel
92s -
max time network
93s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
18-02-2025 09:45
Behavioral task
behavioral1
Sample
VBNFR_.exe
Resource
win7-20240903-en
windows7-x64
22 signatures
150 seconds
Behavioral task
behavioral2
Sample
VBNFR_.exe
Resource
win10v2004-20250217-en
windows10-2004-x64
25 signatures
150 seconds
General
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Target
VBNFR_.exe
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Size
279KB
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MD5
eced539ad810466a59e0433c892ad565
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SHA1
8ad3bcc29bf32e6dad21db3338d8fd339d0c4b61
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SHA256
f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3
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SHA512
583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb
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SSDEEP
6144:pcH9nKVIEcXMVUHfwpZ6DzZmSkPcb8cfaRq7+7NE:phVQXkUHfEZ6pmhkb8UaRu+7NE
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/2120-0-0x0000000000990000-0x00000000009DC000-memory.dmp family_chaos behavioral2/files/0x000700000001e6a5-7.dat family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2456 bcdedit.exe 4376 bcdedit.exe -
pid Process 4412 wbadmin.exe -
Disables Task Manager via registry modification
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation VBNFR_.exe Key value queried \REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SaloXaxlostan.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3664 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\3D Objects\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\StartUp\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn1\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Application Shortcuts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d6vjx1u90.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1084 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1384 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2120 VBNFR_.exe 3664 svchost.exe -
Suspicious behavior: EnumeratesProcesses 40 IoCs
pid Process 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 2120 VBNFR_.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe 3664 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2120 VBNFR_.exe Token: SeDebugPrivilege 3664 svchost.exe Token: SeBackupPrivilege 3088 vssvc.exe Token: SeRestorePrivilege 3088 vssvc.exe Token: SeAuditPrivilege 3088 vssvc.exe Token: SeIncreaseQuotaPrivilege 2900 WMIC.exe Token: SeSecurityPrivilege 2900 WMIC.exe Token: SeTakeOwnershipPrivilege 2900 WMIC.exe Token: SeLoadDriverPrivilege 2900 WMIC.exe Token: SeSystemProfilePrivilege 2900 WMIC.exe Token: SeSystemtimePrivilege 2900 WMIC.exe Token: SeProfSingleProcessPrivilege 2900 WMIC.exe Token: SeIncBasePriorityPrivilege 2900 WMIC.exe Token: SeCreatePagefilePrivilege 2900 WMIC.exe Token: SeBackupPrivilege 2900 WMIC.exe Token: SeRestorePrivilege 2900 WMIC.exe Token: SeShutdownPrivilege 2900 WMIC.exe Token: SeDebugPrivilege 2900 WMIC.exe Token: SeSystemEnvironmentPrivilege 2900 WMIC.exe Token: SeRemoteShutdownPrivilege 2900 WMIC.exe Token: SeUndockPrivilege 2900 WMIC.exe Token: SeManageVolumePrivilege 2900 WMIC.exe Token: 33 2900 WMIC.exe Token: 34 2900 WMIC.exe Token: 35 2900 WMIC.exe Token: 36 2900 WMIC.exe Token: SeIncreaseQuotaPrivilege 2900 WMIC.exe Token: SeSecurityPrivilege 2900 WMIC.exe Token: SeTakeOwnershipPrivilege 2900 WMIC.exe Token: SeLoadDriverPrivilege 2900 WMIC.exe Token: SeSystemProfilePrivilege 2900 WMIC.exe Token: SeSystemtimePrivilege 2900 WMIC.exe Token: SeProfSingleProcessPrivilege 2900 WMIC.exe Token: SeIncBasePriorityPrivilege 2900 WMIC.exe Token: SeCreatePagefilePrivilege 2900 WMIC.exe Token: SeBackupPrivilege 2900 WMIC.exe Token: SeRestorePrivilege 2900 WMIC.exe Token: SeShutdownPrivilege 2900 WMIC.exe Token: SeDebugPrivilege 2900 WMIC.exe Token: SeSystemEnvironmentPrivilege 2900 WMIC.exe Token: SeRemoteShutdownPrivilege 2900 WMIC.exe Token: SeUndockPrivilege 2900 WMIC.exe Token: SeManageVolumePrivilege 2900 WMIC.exe Token: 33 2900 WMIC.exe Token: 34 2900 WMIC.exe Token: 35 2900 WMIC.exe Token: 36 2900 WMIC.exe Token: SeBackupPrivilege 2552 wbengine.exe Token: SeRestorePrivilege 2552 wbengine.exe Token: SeSecurityPrivilege 2552 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2120 wrote to memory of 3664 2120 VBNFR_.exe 85 PID 2120 wrote to memory of 3664 2120 VBNFR_.exe 85 PID 3664 wrote to memory of 4572 3664 svchost.exe 86 PID 3664 wrote to memory of 4572 3664 svchost.exe 86 PID 4572 wrote to memory of 1084 4572 cmd.exe 88 PID 4572 wrote to memory of 1084 4572 cmd.exe 88 PID 4572 wrote to memory of 2900 4572 cmd.exe 91 PID 4572 wrote to memory of 2900 4572 cmd.exe 91 PID 3664 wrote to memory of 3188 3664 svchost.exe 93 PID 3664 wrote to memory of 3188 3664 svchost.exe 93 PID 3188 wrote to memory of 2456 3188 cmd.exe 95 PID 3188 wrote to memory of 2456 3188 cmd.exe 95 PID 3188 wrote to memory of 4376 3188 cmd.exe 96 PID 3188 wrote to memory of 4376 3188 cmd.exe 96 PID 3664 wrote to memory of 3968 3664 svchost.exe 97 PID 3664 wrote to memory of 3968 3664 svchost.exe 97 PID 3968 wrote to memory of 4412 3968 cmd.exe 99 PID 3968 wrote to memory of 4412 3968 cmd.exe 99 PID 3664 wrote to memory of 1384 3664 svchost.exe 104 PID 3664 wrote to memory of 1384 3664 svchost.exe 104 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\VBNFR_.exe"C:\Users\Admin\AppData\Local\Temp\VBNFR_.exe"1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3664 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4572 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1084
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2900
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:3188 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2456
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4376
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3968 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4412
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\SaloXaxlostan.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1384
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3088
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2552
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1184
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1404
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5baf55b95da4a601229647f25dad12878
SHA1abc16954ebfd213733c4493fc1910164d825cac8
SHA256ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA51224f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545
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Filesize
971B
MD55d1bd54f7357bc1f0328b6a54cace8c3
SHA10e3c9c9823f17de35affb7d0471915d07da88cc4
SHA25611564577b46ba88ba9e0cd68b0bf758539edc0b2737e2b901b972df98cb26759
SHA512ac8de963a86f2bfbe57f4e34287c99222c7c848815b83f92c6b5aec1b5e8367625a6ecd80215f54c9daad05f4c8acb13277cb9ed3bb071aa1c1575db0450eb1c
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Filesize
279KB
MD5eced539ad810466a59e0433c892ad565
SHA18ad3bcc29bf32e6dad21db3338d8fd339d0c4b61
SHA256f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3
SHA512583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0