Analysis
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max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
10-06-2024 19:32
Behavioral task
behavioral1
Sample
2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe
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Size
26KB
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MD5
dbaf9e2ccaabf6be60ec6cb9fd899fe4
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SHA1
214bf1084bcc4cf416491a3b30be213452ab0c9b
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SHA256
94a47e4e20e4a6f8c80cadaa62a5df9054c3cc1085f20a9278b0386aa1911b9d
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SHA512
4f377a73651241a79be4a42876414198640b28a1d263cf91a9f51812e75e8415b95f18deaf2588a61ddd36ec34a5e28f07bd88d8af9e7be02214951ea04bd2f7
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SSDEEP
384:RYenjLLAtMI2qdEDb0SAQWwOVp91ilLCxb5ZxDGy:guISDFc9ILCxb3xDF
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\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/2408-1-0x0000000000C80000-0x0000000000C8C000-memory.dmp family_chaos behavioral1/files/0x000d000000012262-5.dat family_chaos behavioral1/memory/1924-7-0x0000000000350000-0x000000000035C000-memory.dmp family_chaos -
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 3 IoCs
resource yara_rule behavioral1/memory/2408-1-0x0000000000C80000-0x0000000000C8C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000d000000012262-5.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/1924-7-0x0000000000350000-0x000000000035C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2916 bcdedit.exe 2932 bcdedit.exe -
Renames multiple (180) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2088 wbadmin.exe -
Disables Task Manager via registry modification
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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 1924 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) 64 IoCs
description ioc Process 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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\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\Programs\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\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\X7K1QVVO\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-268080393-3149932598-1824759070-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5Z74IJYR\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\SKAMU6WE\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\USLGY7LX\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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2704 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2940 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1924 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe 1924 svchost.exe 1924 svchost.exe 1924 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1924 svchost.exe Token: SeBackupPrivilege 2828 vssvc.exe Token: SeRestorePrivilege 2828 vssvc.exe Token: SeAuditPrivilege 2828 vssvc.exe Token: SeIncreaseQuotaPrivilege 2620 WMIC.exe Token: SeSecurityPrivilege 2620 WMIC.exe Token: SeTakeOwnershipPrivilege 2620 WMIC.exe Token: SeLoadDriverPrivilege 2620 WMIC.exe Token: SeSystemProfilePrivilege 2620 WMIC.exe Token: SeSystemtimePrivilege 2620 WMIC.exe Token: SeProfSingleProcessPrivilege 2620 WMIC.exe Token: SeIncBasePriorityPrivilege 2620 WMIC.exe Token: SeCreatePagefilePrivilege 2620 WMIC.exe Token: SeBackupPrivilege 2620 WMIC.exe Token: SeRestorePrivilege 2620 WMIC.exe Token: SeShutdownPrivilege 2620 WMIC.exe Token: SeDebugPrivilege 2620 WMIC.exe Token: SeSystemEnvironmentPrivilege 2620 WMIC.exe Token: SeRemoteShutdownPrivilege 2620 WMIC.exe Token: SeUndockPrivilege 2620 WMIC.exe Token: SeManageVolumePrivilege 2620 WMIC.exe Token: 33 2620 WMIC.exe Token: 34 2620 WMIC.exe Token: 35 2620 WMIC.exe Token: SeIncreaseQuotaPrivilege 2620 WMIC.exe Token: SeSecurityPrivilege 2620 WMIC.exe Token: SeTakeOwnershipPrivilege 2620 WMIC.exe Token: SeLoadDriverPrivilege 2620 WMIC.exe Token: SeSystemProfilePrivilege 2620 WMIC.exe Token: SeSystemtimePrivilege 2620 WMIC.exe Token: SeProfSingleProcessPrivilege 2620 WMIC.exe Token: SeIncBasePriorityPrivilege 2620 WMIC.exe Token: SeCreatePagefilePrivilege 2620 WMIC.exe Token: SeBackupPrivilege 2620 WMIC.exe Token: SeRestorePrivilege 2620 WMIC.exe Token: SeShutdownPrivilege 2620 WMIC.exe Token: SeDebugPrivilege 2620 WMIC.exe Token: SeSystemEnvironmentPrivilege 2620 WMIC.exe Token: SeRemoteShutdownPrivilege 2620 WMIC.exe Token: SeUndockPrivilege 2620 WMIC.exe Token: SeManageVolumePrivilege 2620 WMIC.exe Token: 33 2620 WMIC.exe Token: 34 2620 WMIC.exe Token: 35 2620 WMIC.exe Token: SeBackupPrivilege 2340 wbengine.exe Token: SeRestorePrivilege 2340 wbengine.exe Token: SeSecurityPrivilege 2340 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2408 wrote to memory of 1924 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe 28 PID 2408 wrote to memory of 1924 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe 28 PID 2408 wrote to memory of 1924 2408 2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe 28 PID 1924 wrote to memory of 2344 1924 svchost.exe 29 PID 1924 wrote to memory of 2344 1924 svchost.exe 29 PID 1924 wrote to memory of 2344 1924 svchost.exe 29 PID 2344 wrote to memory of 2704 2344 cmd.exe 31 PID 2344 wrote to memory of 2704 2344 cmd.exe 31 PID 2344 wrote to memory of 2704 2344 cmd.exe 31 PID 2344 wrote to memory of 2620 2344 cmd.exe 34 PID 2344 wrote to memory of 2620 2344 cmd.exe 34 PID 2344 wrote to memory of 2620 2344 cmd.exe 34 PID 1924 wrote to memory of 2172 1924 svchost.exe 36 PID 1924 wrote to memory of 2172 1924 svchost.exe 36 PID 1924 wrote to memory of 2172 1924 svchost.exe 36 PID 2172 wrote to memory of 2916 2172 cmd.exe 38 PID 2172 wrote to memory of 2916 2172 cmd.exe 38 PID 2172 wrote to memory of 2916 2172 cmd.exe 38 PID 2172 wrote to memory of 2932 2172 cmd.exe 39 PID 2172 wrote to memory of 2932 2172 cmd.exe 39 PID 2172 wrote to memory of 2932 2172 cmd.exe 39 PID 1924 wrote to memory of 2820 1924 svchost.exe 40 PID 1924 wrote to memory of 2820 1924 svchost.exe 40 PID 1924 wrote to memory of 2820 1924 svchost.exe 40 PID 2820 wrote to memory of 2088 2820 cmd.exe 42 PID 2820 wrote to memory of 2088 2820 cmd.exe 42 PID 2820 wrote to memory of 2088 2820 cmd.exe 42 PID 1924 wrote to memory of 2940 1924 svchost.exe 48 PID 1924 wrote to memory of 2940 1924 svchost.exe 48 PID 1924 wrote to memory of 2940 1924 svchost.exe 48 -
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\2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_dbaf9e2ccaabf6be60ec6cb9fd899fe4_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2408 -
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:1924 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2704
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2620
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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:2172 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2916
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2932
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2820 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2088
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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:2940
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2828
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2340
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2656
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1792
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
26KB
MD5dbaf9e2ccaabf6be60ec6cb9fd899fe4
SHA1214bf1084bcc4cf416491a3b30be213452ab0c9b
SHA25694a47e4e20e4a6f8c80cadaa62a5df9054c3cc1085f20a9278b0386aa1911b9d
SHA5124f377a73651241a79be4a42876414198640b28a1d263cf91a9f51812e75e8415b95f18deaf2588a61ddd36ec34a5e28f07bd88d8af9e7be02214951ea04bd2f7