Analysis
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max time kernel
117s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
28-08-2024 00:19
Behavioral task
behavioral1
Sample
2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe
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Size
27KB
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MD5
e6c1ecb5c8e5780ab000dabff162dee7
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SHA1
7487be31436fc53343755af2dffa8cb784b79075
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SHA256
c5a4a99a53040e54a4be54daa8c4922c0a412c03ee393479eb0dc40494749ca3
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SHA512
2f23dd73536945d5170a89466990b1e3bec70890997cfa8fc6594b90571f35df47db94b99aa2015775c8cc93f48258848e5943cc54e86dcf75f71b8d95e092ca
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SSDEEP
384:DYenjLLA4/rBvkhpmGl1DRZdi+vYSul6OVp91r/rITb1BLBgxDGiz:qir2mGXNZ9c9tcTyxDvz
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.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/2292-1-0x0000000000970000-0x000000000097E000-memory.dmp family_chaos behavioral1/files/0x005200000000f5ab-5.dat family_chaos behavioral1/memory/3060-7-0x0000000001000000-0x000000000100E000-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 1092 bcdedit.exe 1940 bcdedit.exe -
Renames multiple (183) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2864 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 3060 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\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2212144002-1172735686-1556890956-1000\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\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\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\TWVGEE8A\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\UGUBWRQR\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\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\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\OORJZY5Z\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\Music\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\System 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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VUPQHL12\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4NH6FMWO\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\Music\Sample Music\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\Admin\AppData\Local\Microsoft\Feeds Cache\CGY9ZAGI\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\Saved Games\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\Local\Microsoft\Windows Mail\Stationery\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\U42VY3XA\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\User Pinned\TaskBar\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\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\SX809FAK\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\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 2672 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2580 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3060 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 3060 svchost.exe 3060 svchost.exe 3060 svchost.exe 3060 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 3060 svchost.exe Token: SeBackupPrivilege 2796 vssvc.exe Token: SeRestorePrivilege 2796 vssvc.exe Token: SeAuditPrivilege 2796 vssvc.exe Token: SeIncreaseQuotaPrivilege 560 WMIC.exe Token: SeSecurityPrivilege 560 WMIC.exe Token: SeTakeOwnershipPrivilege 560 WMIC.exe Token: SeLoadDriverPrivilege 560 WMIC.exe Token: SeSystemProfilePrivilege 560 WMIC.exe Token: SeSystemtimePrivilege 560 WMIC.exe Token: SeProfSingleProcessPrivilege 560 WMIC.exe Token: SeIncBasePriorityPrivilege 560 WMIC.exe Token: SeCreatePagefilePrivilege 560 WMIC.exe Token: SeBackupPrivilege 560 WMIC.exe Token: SeRestorePrivilege 560 WMIC.exe Token: SeShutdownPrivilege 560 WMIC.exe Token: SeDebugPrivilege 560 WMIC.exe Token: SeSystemEnvironmentPrivilege 560 WMIC.exe Token: SeRemoteShutdownPrivilege 560 WMIC.exe Token: SeUndockPrivilege 560 WMIC.exe Token: SeManageVolumePrivilege 560 WMIC.exe Token: 33 560 WMIC.exe Token: 34 560 WMIC.exe Token: 35 560 WMIC.exe Token: SeIncreaseQuotaPrivilege 560 WMIC.exe Token: SeSecurityPrivilege 560 WMIC.exe Token: SeTakeOwnershipPrivilege 560 WMIC.exe Token: SeLoadDriverPrivilege 560 WMIC.exe Token: SeSystemProfilePrivilege 560 WMIC.exe Token: SeSystemtimePrivilege 560 WMIC.exe Token: SeProfSingleProcessPrivilege 560 WMIC.exe Token: SeIncBasePriorityPrivilege 560 WMIC.exe Token: SeCreatePagefilePrivilege 560 WMIC.exe Token: SeBackupPrivilege 560 WMIC.exe Token: SeRestorePrivilege 560 WMIC.exe Token: SeShutdownPrivilege 560 WMIC.exe Token: SeDebugPrivilege 560 WMIC.exe Token: SeSystemEnvironmentPrivilege 560 WMIC.exe Token: SeRemoteShutdownPrivilege 560 WMIC.exe Token: SeUndockPrivilege 560 WMIC.exe Token: SeManageVolumePrivilege 560 WMIC.exe Token: 33 560 WMIC.exe Token: 34 560 WMIC.exe Token: 35 560 WMIC.exe Token: SeBackupPrivilege 1524 wbengine.exe Token: SeRestorePrivilege 1524 wbengine.exe Token: SeSecurityPrivilege 1524 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2292 wrote to memory of 3060 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 31 PID 2292 wrote to memory of 3060 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 31 PID 2292 wrote to memory of 3060 2292 2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe 31 PID 3060 wrote to memory of 2780 3060 svchost.exe 32 PID 3060 wrote to memory of 2780 3060 svchost.exe 32 PID 3060 wrote to memory of 2780 3060 svchost.exe 32 PID 2780 wrote to memory of 2672 2780 cmd.exe 34 PID 2780 wrote to memory of 2672 2780 cmd.exe 34 PID 2780 wrote to memory of 2672 2780 cmd.exe 34 PID 2780 wrote to memory of 560 2780 cmd.exe 37 PID 2780 wrote to memory of 560 2780 cmd.exe 37 PID 2780 wrote to memory of 560 2780 cmd.exe 37 PID 3060 wrote to memory of 624 3060 svchost.exe 39 PID 3060 wrote to memory of 624 3060 svchost.exe 39 PID 3060 wrote to memory of 624 3060 svchost.exe 39 PID 624 wrote to memory of 1092 624 cmd.exe 41 PID 624 wrote to memory of 1092 624 cmd.exe 41 PID 624 wrote to memory of 1092 624 cmd.exe 41 PID 624 wrote to memory of 1940 624 cmd.exe 42 PID 624 wrote to memory of 1940 624 cmd.exe 42 PID 624 wrote to memory of 1940 624 cmd.exe 42 PID 3060 wrote to memory of 2028 3060 svchost.exe 43 PID 3060 wrote to memory of 2028 3060 svchost.exe 43 PID 3060 wrote to memory of 2028 3060 svchost.exe 43 PID 2028 wrote to memory of 2864 2028 cmd.exe 45 PID 2028 wrote to memory of 2864 2028 cmd.exe 45 PID 2028 wrote to memory of 2864 2028 cmd.exe 45 PID 3060 wrote to memory of 2580 3060 svchost.exe 50 PID 3060 wrote to memory of 2580 3060 svchost.exe 50 PID 3060 wrote to memory of 2580 3060 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\2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-27_e6c1ecb5c8e5780ab000dabff162dee7_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292 -
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:3060 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2780 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2672
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:560
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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:624 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1092
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1940
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2864
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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:2580
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2796
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1524
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2748
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1652
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5d99e9f240ae55af5087284908b828eb0
SHA11c666205a50f078b17ce316c69cd7dc7eeaf2ea2
SHA2565baeadc7c56f50c647cd9d6d246e6597adab4e77744b25e96922dad3f8a42a27
SHA512fcaa7808fa4638c08a62fda80808891d15ea9062f88a4ea6407623daf977ce17838935e84118641b2d2c6ffaed3e35e7023058ad798ad0af9ce24d1b5812e93d
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
27KB
MD5e6c1ecb5c8e5780ab000dabff162dee7
SHA17487be31436fc53343755af2dffa8cb784b79075
SHA256c5a4a99a53040e54a4be54daa8c4922c0a412c03ee393479eb0dc40494749ca3
SHA5122f23dd73536945d5170a89466990b1e3bec70890997cfa8fc6594b90571f35df47db94b99aa2015775c8cc93f48258848e5943cc54e86dcf75f71b8d95e092ca