Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14-03-2024 18:52
Behavioral task
behavioral1
Sample
Version 2.8.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Version 2.8.exe
Resource
win10v2004-20240226-en
General
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Target
Version 2.8.exe
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Size
223KB
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MD5
77a0989f046d5404700debc97727ca2b
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SHA1
d0bdfdc67862e0bfa491d5d4a3313382a7921625
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SHA256
99b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
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SHA512
f918e3bf1d488cb77f06ede3d565396b8a6391f372e79fd6d148e1afec311143332bd91cb6d3f05fd6b348d40bfd4ae02adc79e20c6031aaa08c1d29d5b83aa9
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SSDEEP
6144:EU9r9SAYFCtntIVprUPvEefILCrSK3FK+Z:EUDYFCtntIVqPvCLCrSK1K+Z
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2264-0-0x0000000000390000-0x00000000003CE000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe 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
Processes:
bcdedit.exebcdedit.exepid process 3208 bcdedit.exe 5088 bcdedit.exe -
Processes:
wbadmin.exepid process 4872 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Version 2.8.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation Version 2.8.exe Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription 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\read_it.txt svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 3816 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) 34 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\Documents\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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 F:\$RECYCLE.BIN\S-1-5-21-3270530367-132075249-2153716227-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Recent\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Saved Games\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\Public\Music\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5fbnapmft.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.
Processes:
vds.exedescription 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.
Processes:
vssadmin.exepid process 4424 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2528 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 3816 svchost.exe -
Suspicious behavior: EnumeratesProcesses 53 IoCs
Processes:
Version 2.8.exesvchost.exepid process 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 2264 Version 2.8.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe 3816 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
Version 2.8.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 2264 Version 2.8.exe Token: SeDebugPrivilege 3816 svchost.exe Token: SeBackupPrivilege 4304 vssvc.exe Token: SeRestorePrivilege 4304 vssvc.exe Token: SeAuditPrivilege 4304 vssvc.exe Token: SeIncreaseQuotaPrivilege 772 WMIC.exe Token: SeSecurityPrivilege 772 WMIC.exe Token: SeTakeOwnershipPrivilege 772 WMIC.exe Token: SeLoadDriverPrivilege 772 WMIC.exe Token: SeSystemProfilePrivilege 772 WMIC.exe Token: SeSystemtimePrivilege 772 WMIC.exe Token: SeProfSingleProcessPrivilege 772 WMIC.exe Token: SeIncBasePriorityPrivilege 772 WMIC.exe Token: SeCreatePagefilePrivilege 772 WMIC.exe Token: SeBackupPrivilege 772 WMIC.exe Token: SeRestorePrivilege 772 WMIC.exe Token: SeShutdownPrivilege 772 WMIC.exe Token: SeDebugPrivilege 772 WMIC.exe Token: SeSystemEnvironmentPrivilege 772 WMIC.exe Token: SeRemoteShutdownPrivilege 772 WMIC.exe Token: SeUndockPrivilege 772 WMIC.exe Token: SeManageVolumePrivilege 772 WMIC.exe Token: 33 772 WMIC.exe Token: 34 772 WMIC.exe Token: 35 772 WMIC.exe Token: 36 772 WMIC.exe Token: SeIncreaseQuotaPrivilege 772 WMIC.exe Token: SeSecurityPrivilege 772 WMIC.exe Token: SeTakeOwnershipPrivilege 772 WMIC.exe Token: SeLoadDriverPrivilege 772 WMIC.exe Token: SeSystemProfilePrivilege 772 WMIC.exe Token: SeSystemtimePrivilege 772 WMIC.exe Token: SeProfSingleProcessPrivilege 772 WMIC.exe Token: SeIncBasePriorityPrivilege 772 WMIC.exe Token: SeCreatePagefilePrivilege 772 WMIC.exe Token: SeBackupPrivilege 772 WMIC.exe Token: SeRestorePrivilege 772 WMIC.exe Token: SeShutdownPrivilege 772 WMIC.exe Token: SeDebugPrivilege 772 WMIC.exe Token: SeSystemEnvironmentPrivilege 772 WMIC.exe Token: SeRemoteShutdownPrivilege 772 WMIC.exe Token: SeUndockPrivilege 772 WMIC.exe Token: SeManageVolumePrivilege 772 WMIC.exe Token: 33 772 WMIC.exe Token: 34 772 WMIC.exe Token: 35 772 WMIC.exe Token: 36 772 WMIC.exe Token: SeBackupPrivilege 2524 wbengine.exe Token: SeRestorePrivilege 2524 wbengine.exe Token: SeSecurityPrivilege 2524 wbengine.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
NOTEPAD.EXEpid process 2528 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
Version 2.8.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 2264 wrote to memory of 3816 2264 Version 2.8.exe svchost.exe PID 2264 wrote to memory of 3816 2264 Version 2.8.exe svchost.exe PID 3816 wrote to memory of 3024 3816 svchost.exe cmd.exe PID 3816 wrote to memory of 3024 3816 svchost.exe cmd.exe PID 3024 wrote to memory of 4424 3024 cmd.exe vssadmin.exe PID 3024 wrote to memory of 4424 3024 cmd.exe vssadmin.exe PID 3024 wrote to memory of 772 3024 cmd.exe WMIC.exe PID 3024 wrote to memory of 772 3024 cmd.exe WMIC.exe PID 3816 wrote to memory of 3448 3816 svchost.exe cmd.exe PID 3816 wrote to memory of 3448 3816 svchost.exe cmd.exe PID 3448 wrote to memory of 3208 3448 cmd.exe bcdedit.exe PID 3448 wrote to memory of 3208 3448 cmd.exe bcdedit.exe PID 3448 wrote to memory of 5088 3448 cmd.exe bcdedit.exe PID 3448 wrote to memory of 5088 3448 cmd.exe bcdedit.exe PID 3816 wrote to memory of 3284 3816 svchost.exe cmd.exe PID 3816 wrote to memory of 3284 3816 svchost.exe cmd.exe PID 3284 wrote to memory of 4872 3284 cmd.exe wbadmin.exe PID 3284 wrote to memory of 4872 3284 cmd.exe wbadmin.exe PID 3816 wrote to memory of 2528 3816 svchost.exe NOTEPAD.EXE PID 3816 wrote to memory of 2528 3816 svchost.exe NOTEPAD.EXE -
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\Version 2.8.exe"C:\Users\Admin\AppData\Local\Temp\Version 2.8.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264 -
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
- 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:3816 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3024 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4424 -
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:772 -
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:3448 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3208 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:5088 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3284 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4872 -
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)
- Suspicious use of FindShellTrayWindow
PID:2528
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4304
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2524
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:5080
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:720
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
223KB
MD577a0989f046d5404700debc97727ca2b
SHA1d0bdfdc67862e0bfa491d5d4a3313382a7921625
SHA25699b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
SHA512f918e3bf1d488cb77f06ede3d565396b8a6391f372e79fd6d148e1afec311143332bd91cb6d3f05fd6b348d40bfd4ae02adc79e20c6031aaa08c1d29d5b83aa9
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Filesize
1KB
MD5ea03cbb2fdf2dc96252b579612602225
SHA1ac9ceff3c368f7409b9a7201f62fa92eded4da51
SHA256e4f0c335d1ffc3ed4a32ae4aee294c9652f67a765fbaaad1f90e0540d25ed565
SHA5121388a3f740f84541f8a8c0298bfe8b71f03d86a71174f97a68edcb4bdca0f467d6823b94314fa54547451c3ec4f6bc2228d74bf7537acf7c2dfb9f5a2d398051