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Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
03/10/2024, 03:35
Behavioral task
behavioral1
Sample
2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
e1be34b8216efb41ca73194d28956eeb
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SHA1
9136f76094b2a584389461540cd063425ab1becc
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SHA256
cc415435bfa94029b8a0686c12172491b4bbedbf38ad7f26b2c8ee32805ba950
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SHA512
400d99c5e758e7f45f22a702107074b2491607cc84d539b5fa1a9021588cdea3f099540d699dde436f682189324bc8b3651bfef3e6dbd16c82fab505f75feed1
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SSDEEP
384:CS3Mg/bqo2mcxtivpZqjuwzU7JHr91CIxb5Aez:Hqo2ptMpgjKNHr93xbqez
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
chaos
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/300-1-0x0000000000850000-0x000000000085C000-memory.dmp family_chaos behavioral1/files/0x000d00000001226d-4.dat family_chaos behavioral1/memory/1200-7-0x0000000000F90000-0x0000000000F9C000-memory.dmp family_chaos -
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 2404 bcdedit.exe 1736 bcdedit.exe -
pid Process 1720 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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1200 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\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\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Music\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\Admin\AppData\Roaming\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\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\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\Libraries\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\Videos\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Recent\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\Accessories\Accessibility\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 F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\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\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini 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 552 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2264 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1200 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 1200 svchost.exe 1200 svchost.exe 1200 svchost.exe 1200 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1200 svchost.exe Token: SeBackupPrivilege 2776 vssvc.exe Token: SeRestorePrivilege 2776 vssvc.exe Token: SeAuditPrivilege 2776 vssvc.exe Token: SeIncreaseQuotaPrivilege 2244 WMIC.exe Token: SeSecurityPrivilege 2244 WMIC.exe Token: SeTakeOwnershipPrivilege 2244 WMIC.exe Token: SeLoadDriverPrivilege 2244 WMIC.exe Token: SeSystemProfilePrivilege 2244 WMIC.exe Token: SeSystemtimePrivilege 2244 WMIC.exe Token: SeProfSingleProcessPrivilege 2244 WMIC.exe Token: SeIncBasePriorityPrivilege 2244 WMIC.exe Token: SeCreatePagefilePrivilege 2244 WMIC.exe Token: SeBackupPrivilege 2244 WMIC.exe Token: SeRestorePrivilege 2244 WMIC.exe Token: SeShutdownPrivilege 2244 WMIC.exe Token: SeDebugPrivilege 2244 WMIC.exe Token: SeSystemEnvironmentPrivilege 2244 WMIC.exe Token: SeRemoteShutdownPrivilege 2244 WMIC.exe Token: SeUndockPrivilege 2244 WMIC.exe Token: SeManageVolumePrivilege 2244 WMIC.exe Token: 33 2244 WMIC.exe Token: 34 2244 WMIC.exe Token: 35 2244 WMIC.exe Token: SeIncreaseQuotaPrivilege 2244 WMIC.exe Token: SeSecurityPrivilege 2244 WMIC.exe Token: SeTakeOwnershipPrivilege 2244 WMIC.exe Token: SeLoadDriverPrivilege 2244 WMIC.exe Token: SeSystemProfilePrivilege 2244 WMIC.exe Token: SeSystemtimePrivilege 2244 WMIC.exe Token: SeProfSingleProcessPrivilege 2244 WMIC.exe Token: SeIncBasePriorityPrivilege 2244 WMIC.exe Token: SeCreatePagefilePrivilege 2244 WMIC.exe Token: SeBackupPrivilege 2244 WMIC.exe Token: SeRestorePrivilege 2244 WMIC.exe Token: SeShutdownPrivilege 2244 WMIC.exe Token: SeDebugPrivilege 2244 WMIC.exe Token: SeSystemEnvironmentPrivilege 2244 WMIC.exe Token: SeRemoteShutdownPrivilege 2244 WMIC.exe Token: SeUndockPrivilege 2244 WMIC.exe Token: SeManageVolumePrivilege 2244 WMIC.exe Token: 33 2244 WMIC.exe Token: 34 2244 WMIC.exe Token: 35 2244 WMIC.exe Token: SeBackupPrivilege 1556 wbengine.exe Token: SeRestorePrivilege 1556 wbengine.exe Token: SeSecurityPrivilege 1556 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 300 wrote to memory of 1200 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 31 PID 300 wrote to memory of 1200 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 31 PID 300 wrote to memory of 1200 300 2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe 31 PID 1200 wrote to memory of 1524 1200 svchost.exe 33 PID 1200 wrote to memory of 1524 1200 svchost.exe 33 PID 1200 wrote to memory of 1524 1200 svchost.exe 33 PID 1524 wrote to memory of 552 1524 cmd.exe 35 PID 1524 wrote to memory of 552 1524 cmd.exe 35 PID 1524 wrote to memory of 552 1524 cmd.exe 35 PID 1524 wrote to memory of 2244 1524 cmd.exe 38 PID 1524 wrote to memory of 2244 1524 cmd.exe 38 PID 1524 wrote to memory of 2244 1524 cmd.exe 38 PID 1200 wrote to memory of 768 1200 svchost.exe 40 PID 1200 wrote to memory of 768 1200 svchost.exe 40 PID 1200 wrote to memory of 768 1200 svchost.exe 40 PID 768 wrote to memory of 2404 768 cmd.exe 42 PID 768 wrote to memory of 2404 768 cmd.exe 42 PID 768 wrote to memory of 2404 768 cmd.exe 42 PID 768 wrote to memory of 1736 768 cmd.exe 43 PID 768 wrote to memory of 1736 768 cmd.exe 43 PID 768 wrote to memory of 1736 768 cmd.exe 43 PID 1200 wrote to memory of 2108 1200 svchost.exe 44 PID 1200 wrote to memory of 2108 1200 svchost.exe 44 PID 1200 wrote to memory of 2108 1200 svchost.exe 44 PID 2108 wrote to memory of 1720 2108 cmd.exe 46 PID 2108 wrote to memory of 1720 2108 cmd.exe 46 PID 2108 wrote to memory of 1720 2108 cmd.exe 46 PID 1200 wrote to memory of 2264 1200 svchost.exe 50 PID 1200 wrote to memory of 2264 1200 svchost.exe 50 PID 1200 wrote to memory of 2264 1200 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\2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:300 -
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)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1524 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:552
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2244
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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:768 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2404
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1736
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1720
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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:2264
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2776
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1556
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2044
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1096
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD5e1be34b8216efb41ca73194d28956eeb
SHA19136f76094b2a584389461540cd063425ab1becc
SHA256cc415435bfa94029b8a0686c12172491b4bbedbf38ad7f26b2c8ee32805ba950
SHA512400d99c5e758e7f45f22a702107074b2491607cc84d539b5fa1a9021588cdea3f099540d699dde436f682189324bc8b3651bfef3e6dbd16c82fab505f75feed1
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740