Analysis
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max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
19-12-2024 14:37
Behavioral task
behavioral1
Sample
Synth Multi Tool.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
Synth Multi Tool.exe
Resource
win10v2004-20241007-en
General
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Target
Synth Multi Tool.exe
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Size
373KB
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MD5
db00217024581a4e0b46c11ab62bb7e6
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SHA1
54be254f9978ad728c1a8f7364cc527c4c4348a0
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SHA256
b970ee2d59035562b4594e6cac64255f38dc9708a8119b7f0d44af8c9ae81b78
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SHA512
167e50bdc4d0e854dd261670b64a96ae31e5fb33738363cee1a40cfae349794ceca67ebd462f02e166cec01e149da785af3af33433f162ea7a1d13ae75dab2c3
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SSDEEP
6144:Dr96+4vlljqensRnj9tZ1PiO3/UYwZJYX8CWooc/C5qhXK:xQlleensRn5b1PiO8YwZJYXkoocqqhXK
Malware Config
Extracted
C:\Users\Admin\Documents\NOTE FROM THE HACKERS.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/304-1-0x00000000012B0000-0x0000000001314000-memory.dmp family_chaos behavioral1/memory/2436-8-0x0000000000CF0000-0x0000000000D54000-memory.dmp family_chaos behavioral1/files/0x0004000000004ed7-7.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 812 bcdedit.exe 316 bcdedit.exe -
Renames multiple (215) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2836 wbadmin.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 2436 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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Drops desktop.ini file(s) 34 IoCs
description ioc Process 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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Documents\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\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\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\Internet Explorer\Quick Launch\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\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\Administrative Tools\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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 for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gzfc5vc8g.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1188 vssadmin.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2436 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 304 Synth Multi Tool.exe 304 Synth Multi Tool.exe 304 Synth Multi Tool.exe 2436 svchost.exe 2436 svchost.exe 2436 svchost.exe 2436 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 304 Synth Multi Tool.exe Token: SeDebugPrivilege 2436 svchost.exe Token: SeBackupPrivilege 1872 vssvc.exe Token: SeRestorePrivilege 1872 vssvc.exe Token: SeAuditPrivilege 1872 vssvc.exe Token: SeIncreaseQuotaPrivilege 688 WMIC.exe Token: SeSecurityPrivilege 688 WMIC.exe Token: SeTakeOwnershipPrivilege 688 WMIC.exe Token: SeLoadDriverPrivilege 688 WMIC.exe Token: SeSystemProfilePrivilege 688 WMIC.exe Token: SeSystemtimePrivilege 688 WMIC.exe Token: SeProfSingleProcessPrivilege 688 WMIC.exe Token: SeIncBasePriorityPrivilege 688 WMIC.exe Token: SeCreatePagefilePrivilege 688 WMIC.exe Token: SeBackupPrivilege 688 WMIC.exe Token: SeRestorePrivilege 688 WMIC.exe Token: SeShutdownPrivilege 688 WMIC.exe Token: SeDebugPrivilege 688 WMIC.exe Token: SeSystemEnvironmentPrivilege 688 WMIC.exe Token: SeRemoteShutdownPrivilege 688 WMIC.exe Token: SeUndockPrivilege 688 WMIC.exe Token: SeManageVolumePrivilege 688 WMIC.exe Token: 33 688 WMIC.exe Token: 34 688 WMIC.exe Token: 35 688 WMIC.exe Token: SeIncreaseQuotaPrivilege 688 WMIC.exe Token: SeSecurityPrivilege 688 WMIC.exe Token: SeTakeOwnershipPrivilege 688 WMIC.exe Token: SeLoadDriverPrivilege 688 WMIC.exe Token: SeSystemProfilePrivilege 688 WMIC.exe Token: SeSystemtimePrivilege 688 WMIC.exe Token: SeProfSingleProcessPrivilege 688 WMIC.exe Token: SeIncBasePriorityPrivilege 688 WMIC.exe Token: SeCreatePagefilePrivilege 688 WMIC.exe Token: SeBackupPrivilege 688 WMIC.exe Token: SeRestorePrivilege 688 WMIC.exe Token: SeShutdownPrivilege 688 WMIC.exe Token: SeDebugPrivilege 688 WMIC.exe Token: SeSystemEnvironmentPrivilege 688 WMIC.exe Token: SeRemoteShutdownPrivilege 688 WMIC.exe Token: SeUndockPrivilege 688 WMIC.exe Token: SeManageVolumePrivilege 688 WMIC.exe Token: 33 688 WMIC.exe Token: 34 688 WMIC.exe Token: 35 688 WMIC.exe Token: SeBackupPrivilege 2572 wbengine.exe Token: SeRestorePrivilege 2572 wbengine.exe Token: SeSecurityPrivilege 2572 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 304 wrote to memory of 2436 304 Synth Multi Tool.exe 31 PID 304 wrote to memory of 2436 304 Synth Multi Tool.exe 31 PID 304 wrote to memory of 2436 304 Synth Multi Tool.exe 31 PID 2436 wrote to memory of 2968 2436 svchost.exe 33 PID 2436 wrote to memory of 2968 2436 svchost.exe 33 PID 2436 wrote to memory of 2968 2436 svchost.exe 33 PID 2968 wrote to memory of 1188 2968 cmd.exe 35 PID 2968 wrote to memory of 1188 2968 cmd.exe 35 PID 2968 wrote to memory of 1188 2968 cmd.exe 35 PID 2968 wrote to memory of 688 2968 cmd.exe 38 PID 2968 wrote to memory of 688 2968 cmd.exe 38 PID 2968 wrote to memory of 688 2968 cmd.exe 38 PID 2436 wrote to memory of 1044 2436 svchost.exe 40 PID 2436 wrote to memory of 1044 2436 svchost.exe 40 PID 2436 wrote to memory of 1044 2436 svchost.exe 40 PID 1044 wrote to memory of 812 1044 cmd.exe 42 PID 1044 wrote to memory of 812 1044 cmd.exe 42 PID 1044 wrote to memory of 812 1044 cmd.exe 42 PID 1044 wrote to memory of 316 1044 cmd.exe 43 PID 1044 wrote to memory of 316 1044 cmd.exe 43 PID 1044 wrote to memory of 316 1044 cmd.exe 43 PID 2436 wrote to memory of 1680 2436 svchost.exe 44 PID 2436 wrote to memory of 1680 2436 svchost.exe 44 PID 2436 wrote to memory of 1680 2436 svchost.exe 44 PID 1680 wrote to memory of 2836 1680 cmd.exe 46 PID 1680 wrote to memory of 2836 1680 cmd.exe 46 PID 1680 wrote to memory of 2836 1680 cmd.exe 46 PID 2436 wrote to memory of 1752 2436 svchost.exe 50 PID 2436 wrote to memory of 1752 2436 svchost.exe 50 PID 2436 wrote to memory of 1752 2436 svchost.exe 50 -
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\Synth Multi Tool.exe"C:\Users\Admin\AppData\Local\Temp\Synth Multi Tool.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:304 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2968 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1188
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:688
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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:1044 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:812
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:316
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2836
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\NOTE FROM THE HACKERS.txt3⤵PID:1752
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1872
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2572
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2576
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1444
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
373KB
MD5db00217024581a4e0b46c11ab62bb7e6
SHA154be254f9978ad728c1a8f7364cc527c4c4348a0
SHA256b970ee2d59035562b4594e6cac64255f38dc9708a8119b7f0d44af8c9ae81b78
SHA512167e50bdc4d0e854dd261670b64a96ae31e5fb33738363cee1a40cfae349794ceca67ebd462f02e166cec01e149da785af3af33433f162ea7a1d13ae75dab2c3
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Filesize
1KB
MD514bd3821f7209ff491eb29364af87894
SHA1ee920726dd84973c486a107592964ec5a01150d0
SHA256e47e5f8f7bb3ece6e9dcc05df902667fa64077ea760eceae3c669de7ea8b4aac
SHA5126895f1e3143a119bc29ac961539a4d14701ffdf6d4ba50da4a36be55c81259b5ca3c2948d8cf996475f121aef4bb4675d43b59c0f74405b41c3141a3f43fc03a