Analysis
-
max time kernel
137s -
max time network
142s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241211-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
19-12-2024 12:57
Behavioral task
behavioral1
Sample
Synth Multi Tool.exe
Resource
win10ltsc2021-20241211-en
General
-
Target
Synth Multi Tool.exe
-
Size
373KB
-
MD5
db00217024581a4e0b46c11ab62bb7e6
-
SHA1
54be254f9978ad728c1a8f7364cc527c4c4348a0
-
SHA256
b970ee2d59035562b4594e6cac64255f38dc9708a8119b7f0d44af8c9ae81b78
-
SHA512
167e50bdc4d0e854dd261670b64a96ae31e5fb33738363cee1a40cfae349794ceca67ebd462f02e166cec01e149da785af3af33433f162ea7a1d13ae75dab2c3
-
SSDEEP
6144:Dr96+4vlljqensRnj9tZ1PiO3/UYwZJYX8CWooc/C5qhXK:xQlleensRn5b1PiO8YwZJYXkoocqqhXK
Malware Config
Extracted
C:\Users\Admin\Documents\NOTE FROM THE HACKERS.txt
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 2 IoCs
resource yara_rule behavioral1/memory/1804-1-0x0000000000CF0000-0x0000000000D54000-memory.dmp family_chaos behavioral1/files/0x002800000004615a-3.dat family_chaos -
Chaos family
-
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2700 bcdedit.exe 636 bcdedit.exe -
Renames multiple (199) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
pid Process 3644 wbadmin.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-1-5-21-1006597246-3150276181-3318461161-1000\Control Panel\International\Geo\Nation Synth Multi Tool.exe Key value queried \REGISTRY\USER\S-1-5-21-1006597246-3150276181-3318461161-1000\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\NOTE FROM THE HACKERS.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 8 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops desktop.ini file(s) 31 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\Links\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\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\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1006597246-3150276181-3318461161-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\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\Favorites\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\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\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1006597246-3150276181-3318461161-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0wyzx78yf.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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 4068 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1006597246-3150276181-3318461161-1000_Classes\Local Settings svchost.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 8 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 1804 Synth Multi Tool.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 8 svchost.exe 1832 WMIC.exe 1832 WMIC.exe 1832 WMIC.exe 1832 WMIC.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1804 Synth Multi Tool.exe Token: SeDebugPrivilege 8 svchost.exe Token: SeBackupPrivilege 4360 vssvc.exe Token: SeRestorePrivilege 4360 vssvc.exe Token: SeAuditPrivilege 4360 vssvc.exe Token: SeIncreaseQuotaPrivilege 1832 WMIC.exe Token: SeSecurityPrivilege 1832 WMIC.exe Token: SeTakeOwnershipPrivilege 1832 WMIC.exe Token: SeLoadDriverPrivilege 1832 WMIC.exe Token: SeSystemProfilePrivilege 1832 WMIC.exe Token: SeSystemtimePrivilege 1832 WMIC.exe Token: SeProfSingleProcessPrivilege 1832 WMIC.exe Token: SeIncBasePriorityPrivilege 1832 WMIC.exe Token: SeCreatePagefilePrivilege 1832 WMIC.exe Token: SeBackupPrivilege 1832 WMIC.exe Token: SeRestorePrivilege 1832 WMIC.exe Token: SeShutdownPrivilege 1832 WMIC.exe Token: SeDebugPrivilege 1832 WMIC.exe Token: SeSystemEnvironmentPrivilege 1832 WMIC.exe Token: SeRemoteShutdownPrivilege 1832 WMIC.exe Token: SeUndockPrivilege 1832 WMIC.exe Token: SeManageVolumePrivilege 1832 WMIC.exe Token: 33 1832 WMIC.exe Token: 34 1832 WMIC.exe Token: 35 1832 WMIC.exe Token: 36 1832 WMIC.exe Token: SeIncreaseQuotaPrivilege 1832 WMIC.exe Token: SeSecurityPrivilege 1832 WMIC.exe Token: SeTakeOwnershipPrivilege 1832 WMIC.exe Token: SeLoadDriverPrivilege 1832 WMIC.exe Token: SeSystemProfilePrivilege 1832 WMIC.exe Token: SeSystemtimePrivilege 1832 WMIC.exe Token: SeProfSingleProcessPrivilege 1832 WMIC.exe Token: SeIncBasePriorityPrivilege 1832 WMIC.exe Token: SeCreatePagefilePrivilege 1832 WMIC.exe Token: SeBackupPrivilege 1832 WMIC.exe Token: SeRestorePrivilege 1832 WMIC.exe Token: SeShutdownPrivilege 1832 WMIC.exe Token: SeDebugPrivilege 1832 WMIC.exe Token: SeSystemEnvironmentPrivilege 1832 WMIC.exe Token: SeRemoteShutdownPrivilege 1832 WMIC.exe Token: SeUndockPrivilege 1832 WMIC.exe Token: SeManageVolumePrivilege 1832 WMIC.exe Token: 33 1832 WMIC.exe Token: 34 1832 WMIC.exe Token: 35 1832 WMIC.exe Token: 36 1832 WMIC.exe Token: SeBackupPrivilege 3000 wbengine.exe Token: SeRestorePrivilege 3000 wbengine.exe Token: SeSecurityPrivilege 3000 wbengine.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3980 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1804 wrote to memory of 8 1804 Synth Multi Tool.exe 89 PID 1804 wrote to memory of 8 1804 Synth Multi Tool.exe 89 PID 8 wrote to memory of 3476 8 svchost.exe 92 PID 8 wrote to memory of 3476 8 svchost.exe 92 PID 3476 wrote to memory of 4068 3476 cmd.exe 94 PID 3476 wrote to memory of 4068 3476 cmd.exe 94 PID 3476 wrote to memory of 1832 3476 cmd.exe 97 PID 3476 wrote to memory of 1832 3476 cmd.exe 97 PID 8 wrote to memory of 1648 8 svchost.exe 98 PID 8 wrote to memory of 1648 8 svchost.exe 98 PID 1648 wrote to memory of 2700 1648 cmd.exe 100 PID 1648 wrote to memory of 2700 1648 cmd.exe 100 PID 1648 wrote to memory of 636 1648 cmd.exe 101 PID 1648 wrote to memory of 636 1648 cmd.exe 101 PID 8 wrote to memory of 3988 8 svchost.exe 102 PID 8 wrote to memory of 3988 8 svchost.exe 102 PID 3988 wrote to memory of 3644 3988 cmd.exe 104 PID 3988 wrote to memory of 3644 3988 cmd.exe 104 PID 8 wrote to memory of 3980 8 svchost.exe 108 PID 8 wrote to memory of 3980 8 svchost.exe 108 -
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.
-
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\Synth Multi Tool.exe"C:\Users\Admin\AppData\Local\Temp\Synth Multi Tool.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804 -
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:8 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3476 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4068
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1832
-
-
-
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:1648 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2700
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:636
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3988 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3644
-
-
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\NOTE FROM THE HACKERS.txt3⤵
- Suspicious use of FindShellTrayWindow
PID:3980
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4360
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3000
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4260
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4632
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:680
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
373KB
MD5db00217024581a4e0b46c11ab62bb7e6
SHA154be254f9978ad728c1a8f7364cc527c4c4348a0
SHA256b970ee2d59035562b4594e6cac64255f38dc9708a8119b7f0d44af8c9ae81b78
SHA512167e50bdc4d0e854dd261670b64a96ae31e5fb33738363cee1a40cfae349794ceca67ebd462f02e166cec01e149da785af3af33433f162ea7a1d13ae75dab2c3
-
Filesize
1KB
MD514bd3821f7209ff491eb29364af87894
SHA1ee920726dd84973c486a107592964ec5a01150d0
SHA256e47e5f8f7bb3ece6e9dcc05df902667fa64077ea760eceae3c669de7ea8b4aac
SHA5126895f1e3143a119bc29ac961539a4d14701ffdf6d4ba50da4a36be55c81259b5ca3c2948d8cf996475f121aef4bb4675d43b59c0f74405b41c3141a3f43fc03a