Analysis
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max time kernel
63s -
max time network
89s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30/03/2023, 21:37
Behavioral task
behavioral1
Sample
bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
Resource
win10v2004-20230220-en
General
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Target
bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
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Size
205KB
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MD5
62e53bc5aa5f2a70a54e328bff51505f
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SHA1
e7deceee97a09d539d81eb91f988ece5e2a2ff51
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SHA256
bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369
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SHA512
a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793
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SSDEEP
6144:+B4mr9NzqHW7V5V9w/UIRZizI1aqebq/lsyp:+B40qHW7nU/pZmiXqy
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 4 IoCs
resource yara_rule behavioral2/memory/1196-133-0x0000000000040000-0x0000000000078000-memory.dmp family_chaos behavioral2/files/0x0006000000022f95-138.dat family_chaos behavioral2/files/0x0006000000022f95-144.dat family_chaos behavioral2/files/0x0006000000022f95-143.dat family_chaos -
Deletes shadow copies 2 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 5080 bcdedit.exe 1372 bcdedit.exe -
pid Process 4408 wbadmin.exe -
Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\BackupEnable.raw => C:\Users\Admin\Pictures\BackupEnable.raw.skull svchost.exe File renamed C:\Users\Admin\Pictures\MountRead.raw => C:\Users\Admin\Pictures\MountRead.raw.skull svchost.exe File renamed C:\Users\Admin\Pictures\MoveClear.png => C:\Users\Admin\Pictures\MoveClear.png.skull svchost.exe File renamed C:\Users\Admin\Pictures\UndoDisconnect.raw => C:\Users\Admin\Pictures\UndoDisconnect.raw.skull svchost.exe -
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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe 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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 4436 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 33 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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 C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Roaming\Microsoft\Windows\Start Menu\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\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\AccountPictures\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\SendTo\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\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4588 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 2 IoCs
pid Process 2560 NOTEPAD.EXE 3012 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4436 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe 4436 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe Token: SeDebugPrivilege 4436 svchost.exe Token: SeBackupPrivilege 1736 vssvc.exe Token: SeRestorePrivilege 1736 vssvc.exe Token: SeAuditPrivilege 1736 vssvc.exe Token: SeIncreaseQuotaPrivilege 5036 WMIC.exe Token: SeSecurityPrivilege 5036 WMIC.exe Token: SeTakeOwnershipPrivilege 5036 WMIC.exe Token: SeLoadDriverPrivilege 5036 WMIC.exe Token: SeSystemProfilePrivilege 5036 WMIC.exe Token: SeSystemtimePrivilege 5036 WMIC.exe Token: SeProfSingleProcessPrivilege 5036 WMIC.exe Token: SeIncBasePriorityPrivilege 5036 WMIC.exe Token: SeCreatePagefilePrivilege 5036 WMIC.exe Token: SeBackupPrivilege 5036 WMIC.exe Token: SeRestorePrivilege 5036 WMIC.exe Token: SeShutdownPrivilege 5036 WMIC.exe Token: SeDebugPrivilege 5036 WMIC.exe Token: SeSystemEnvironmentPrivilege 5036 WMIC.exe Token: SeRemoteShutdownPrivilege 5036 WMIC.exe Token: SeUndockPrivilege 5036 WMIC.exe Token: SeManageVolumePrivilege 5036 WMIC.exe Token: 33 5036 WMIC.exe Token: 34 5036 WMIC.exe Token: 35 5036 WMIC.exe Token: 36 5036 WMIC.exe Token: SeIncreaseQuotaPrivilege 5036 WMIC.exe Token: SeSecurityPrivilege 5036 WMIC.exe Token: SeTakeOwnershipPrivilege 5036 WMIC.exe Token: SeLoadDriverPrivilege 5036 WMIC.exe Token: SeSystemProfilePrivilege 5036 WMIC.exe Token: SeSystemtimePrivilege 5036 WMIC.exe Token: SeProfSingleProcessPrivilege 5036 WMIC.exe Token: SeIncBasePriorityPrivilege 5036 WMIC.exe Token: SeCreatePagefilePrivilege 5036 WMIC.exe Token: SeBackupPrivilege 5036 WMIC.exe Token: SeRestorePrivilege 5036 WMIC.exe Token: SeShutdownPrivilege 5036 WMIC.exe Token: SeDebugPrivilege 5036 WMIC.exe Token: SeSystemEnvironmentPrivilege 5036 WMIC.exe Token: SeRemoteShutdownPrivilege 5036 WMIC.exe Token: SeUndockPrivilege 5036 WMIC.exe Token: SeManageVolumePrivilege 5036 WMIC.exe Token: 33 5036 WMIC.exe Token: 34 5036 WMIC.exe Token: 35 5036 WMIC.exe Token: 36 5036 WMIC.exe Token: SeBackupPrivilege 4620 wbengine.exe Token: SeRestorePrivilege 4620 wbengine.exe Token: SeSecurityPrivilege 4620 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1196 wrote to memory of 4436 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 90 PID 1196 wrote to memory of 4436 1196 bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe 90 PID 4436 wrote to memory of 5116 4436 svchost.exe 93 PID 4436 wrote to memory of 5116 4436 svchost.exe 93 PID 5116 wrote to memory of 4588 5116 cmd.exe 95 PID 5116 wrote to memory of 4588 5116 cmd.exe 95 PID 5116 wrote to memory of 5036 5116 cmd.exe 99 PID 5116 wrote to memory of 5036 5116 cmd.exe 99 PID 4436 wrote to memory of 2796 4436 svchost.exe 100 PID 4436 wrote to memory of 2796 4436 svchost.exe 100 PID 2796 wrote to memory of 5080 2796 cmd.exe 102 PID 2796 wrote to memory of 5080 2796 cmd.exe 102 PID 2796 wrote to memory of 1372 2796 cmd.exe 103 PID 2796 wrote to memory of 1372 2796 cmd.exe 103 PID 4436 wrote to memory of 5100 4436 svchost.exe 104 PID 4436 wrote to memory of 5100 4436 svchost.exe 104 PID 5100 wrote to memory of 4408 5100 cmd.exe 106 PID 5100 wrote to memory of 4408 5100 cmd.exe 106 PID 4436 wrote to memory of 3012 4436 svchost.exe 110 PID 4436 wrote to memory of 3012 4436 svchost.exe 110 -
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\bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe"C:\Users\Admin\AppData\Local\Temp\bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Modifies extensions of user files
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4436 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:5116 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4588
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:5036
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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:2796 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:5080
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1372
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:5100 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4408
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:3012
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1736
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\read_it.txt1⤵
- Opens file in notepad (likely ransom note)
PID:2560
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4620
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1280
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3260
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
844B
MD5a23e76ce33adf72409fb0c43393d3087
SHA1502620245be1d0912ab9c4fb5390ab14e27778a8
SHA25688702c38b8bea9555a13ae747cbfdf2947fff6060f4fef75486025e0152ddf3a
SHA51224fdd6761b29eb62ecfefa7a5ed15705645c3a303ada3728823382ba38e08eae12f15840fb65361391cff1ba4cad55fdfb6e0144c9e95b7e7fbe928319d732bb
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Filesize
205KB
MD562e53bc5aa5f2a70a54e328bff51505f
SHA1e7deceee97a09d539d81eb91f988ece5e2a2ff51
SHA256bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369
SHA512a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793
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Filesize
205KB
MD562e53bc5aa5f2a70a54e328bff51505f
SHA1e7deceee97a09d539d81eb91f988ece5e2a2ff51
SHA256bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369
SHA512a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793
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Filesize
205KB
MD562e53bc5aa5f2a70a54e328bff51505f
SHA1e7deceee97a09d539d81eb91f988ece5e2a2ff51
SHA256bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369
SHA512a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793
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Filesize
844B
MD5a23e76ce33adf72409fb0c43393d3087
SHA1502620245be1d0912ab9c4fb5390ab14e27778a8
SHA25688702c38b8bea9555a13ae747cbfdf2947fff6060f4fef75486025e0152ddf3a
SHA51224fdd6761b29eb62ecfefa7a5ed15705645c3a303ada3728823382ba38e08eae12f15840fb65361391cff1ba4cad55fdfb6e0144c9e95b7e7fbe928319d732bb
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Filesize
844B
MD5a23e76ce33adf72409fb0c43393d3087
SHA1502620245be1d0912ab9c4fb5390ab14e27778a8
SHA25688702c38b8bea9555a13ae747cbfdf2947fff6060f4fef75486025e0152ddf3a
SHA51224fdd6761b29eb62ecfefa7a5ed15705645c3a303ada3728823382ba38e08eae12f15840fb65361391cff1ba4cad55fdfb6e0144c9e95b7e7fbe928319d732bb