Analysis
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max time kernel
117s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
16-06-2024 19:24
Behavioral task
behavioral1
Sample
2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe
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Size
27KB
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MD5
39606f25a795d1f1ae8d8a154780fab4
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SHA1
bfda025d280b22371f987b702e94682b1c0b7ba6
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SHA256
95b3dde51afe570553bd0f1ddba81a399532e33e5ac8979d64aaa9b009d071fb
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SHA512
6ecbac36383230b6d1891f5992adef8a3cc295ca64ba19d7221c093904a0b2174577b51e75e048b7853e95d0e5e14b9aedf0e97486b9071457009e85cb0bd61a
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SSDEEP
384:LtWZPzzxAm1vwePsd7lMDwXIYNl3Oy5o91s6x82vb:C7zxAmZsdweIAho92o82D
Malware Config
Extracted
C:\ProgramData\Adobe\Updater6\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/1652-1-0x0000000000890000-0x000000000089E000-memory.dmp family_chaos behavioral1/files/0x000c00000001432c-6.dat family_chaos behavioral1/memory/2732-8-0x00000000009A0000-0x00000000009AE000-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/1652-1-0x0000000000890000-0x000000000089E000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000c00000001432c-6.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/2732-8-0x00000000009A0000-0x00000000009AE000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Detects executables containing many references to VEEAM. Observed in ransomware 3 IoCs
resource yara_rule behavioral1/memory/1652-1-0x0000000000890000-0x000000000089E000-memory.dmp INDICATOR_SUSPICOUS_EXE_References_VEEAM behavioral1/files/0x000c00000001432c-6.dat INDICATOR_SUSPICOUS_EXE_References_VEEAM behavioral1/memory/2732-8-0x00000000009A0000-0x00000000009AE000-memory.dmp INDICATOR_SUSPICOUS_EXE_References_VEEAM -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2916 bcdedit.exe 2932 bcdedit.exe -
Renames multiple (175) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2972 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process 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 2732 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\Downloads\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\System Tools\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\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HUNEJ1HU\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\Documents\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 F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\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\Start Menu\Programs\Maintenance\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\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\Windows\Temporary Internet Files\Content.IE5\MG62UP6H\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\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Links\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\Local\Microsoft\Windows\History\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\Roaming\Microsoft\Windows\Start Menu\Programs\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\6UZVS19T\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\A9XVYA91\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\Favorites\Links\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\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\AppData\Local\Microsoft\Feeds Cache\JWM3U1DD\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\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\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\Favorites\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\Start Menu\Programs\Accessories\Accessibility\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\Windows\Temporary Internet Files\Content.IE5\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\Public\Recorded TV\Sample Media\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\2RM92H5V\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 2848 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2184 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2732 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 2732 svchost.exe 2732 svchost.exe 2732 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2732 svchost.exe Token: SeBackupPrivilege 2844 vssvc.exe Token: SeRestorePrivilege 2844 vssvc.exe Token: SeAuditPrivilege 2844 vssvc.exe Token: SeIncreaseQuotaPrivilege 2116 WMIC.exe Token: SeSecurityPrivilege 2116 WMIC.exe Token: SeTakeOwnershipPrivilege 2116 WMIC.exe Token: SeLoadDriverPrivilege 2116 WMIC.exe Token: SeSystemProfilePrivilege 2116 WMIC.exe Token: SeSystemtimePrivilege 2116 WMIC.exe Token: SeProfSingleProcessPrivilege 2116 WMIC.exe Token: SeIncBasePriorityPrivilege 2116 WMIC.exe Token: SeCreatePagefilePrivilege 2116 WMIC.exe Token: SeBackupPrivilege 2116 WMIC.exe Token: SeRestorePrivilege 2116 WMIC.exe Token: SeShutdownPrivilege 2116 WMIC.exe Token: SeDebugPrivilege 2116 WMIC.exe Token: SeSystemEnvironmentPrivilege 2116 WMIC.exe Token: SeRemoteShutdownPrivilege 2116 WMIC.exe Token: SeUndockPrivilege 2116 WMIC.exe Token: SeManageVolumePrivilege 2116 WMIC.exe Token: 33 2116 WMIC.exe Token: 34 2116 WMIC.exe Token: 35 2116 WMIC.exe Token: SeIncreaseQuotaPrivilege 2116 WMIC.exe Token: SeSecurityPrivilege 2116 WMIC.exe Token: SeTakeOwnershipPrivilege 2116 WMIC.exe Token: SeLoadDriverPrivilege 2116 WMIC.exe Token: SeSystemProfilePrivilege 2116 WMIC.exe Token: SeSystemtimePrivilege 2116 WMIC.exe Token: SeProfSingleProcessPrivilege 2116 WMIC.exe Token: SeIncBasePriorityPrivilege 2116 WMIC.exe Token: SeCreatePagefilePrivilege 2116 WMIC.exe Token: SeBackupPrivilege 2116 WMIC.exe Token: SeRestorePrivilege 2116 WMIC.exe Token: SeShutdownPrivilege 2116 WMIC.exe Token: SeDebugPrivilege 2116 WMIC.exe Token: SeSystemEnvironmentPrivilege 2116 WMIC.exe Token: SeRemoteShutdownPrivilege 2116 WMIC.exe Token: SeUndockPrivilege 2116 WMIC.exe Token: SeManageVolumePrivilege 2116 WMIC.exe Token: 33 2116 WMIC.exe Token: 34 2116 WMIC.exe Token: 35 2116 WMIC.exe Token: SeBackupPrivilege 300 wbengine.exe Token: SeRestorePrivilege 300 wbengine.exe Token: SeSecurityPrivilege 300 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1652 wrote to memory of 2732 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 28 PID 1652 wrote to memory of 2732 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 28 PID 1652 wrote to memory of 2732 1652 2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe 28 PID 2732 wrote to memory of 2688 2732 svchost.exe 29 PID 2732 wrote to memory of 2688 2732 svchost.exe 29 PID 2732 wrote to memory of 2688 2732 svchost.exe 29 PID 2688 wrote to memory of 2848 2688 cmd.exe 31 PID 2688 wrote to memory of 2848 2688 cmd.exe 31 PID 2688 wrote to memory of 2848 2688 cmd.exe 31 PID 2688 wrote to memory of 2116 2688 cmd.exe 34 PID 2688 wrote to memory of 2116 2688 cmd.exe 34 PID 2688 wrote to memory of 2116 2688 cmd.exe 34 PID 2732 wrote to memory of 2536 2732 svchost.exe 36 PID 2732 wrote to memory of 2536 2732 svchost.exe 36 PID 2732 wrote to memory of 2536 2732 svchost.exe 36 PID 2536 wrote to memory of 2916 2536 cmd.exe 38 PID 2536 wrote to memory of 2916 2536 cmd.exe 38 PID 2536 wrote to memory of 2916 2536 cmd.exe 38 PID 2536 wrote to memory of 2932 2536 cmd.exe 39 PID 2536 wrote to memory of 2932 2536 cmd.exe 39 PID 2536 wrote to memory of 2932 2536 cmd.exe 39 PID 2732 wrote to memory of 2976 2732 svchost.exe 40 PID 2732 wrote to memory of 2976 2732 svchost.exe 40 PID 2732 wrote to memory of 2976 2732 svchost.exe 40 PID 2976 wrote to memory of 2972 2976 cmd.exe 42 PID 2976 wrote to memory of 2972 2976 cmd.exe 42 PID 2976 wrote to memory of 2972 2976 cmd.exe 42 PID 2732 wrote to memory of 2184 2732 svchost.exe 48 PID 2732 wrote to memory of 2184 2732 svchost.exe 48 PID 2732 wrote to memory of 2184 2732 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\2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-16_39606f25a795d1f1ae8d8a154780fab4_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2732 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2688 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2848
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2116
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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:2536 -
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:2976 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2972
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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:2184
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2844
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:300
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1424
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2780
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
27KB
MD539606f25a795d1f1ae8d8a154780fab4
SHA1bfda025d280b22371f987b702e94682b1c0b7ba6
SHA25695b3dde51afe570553bd0f1ddba81a399532e33e5ac8979d64aaa9b009d071fb
SHA5126ecbac36383230b6d1891f5992adef8a3cc295ca64ba19d7221c093904a0b2174577b51e75e048b7853e95d0e5e14b9aedf0e97486b9071457009e85cb0bd61a
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0