Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
15-08-2024 06:24
Behavioral task
behavioral1
Sample
2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe
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Size
27KB
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MD5
bc020a8f9d02f4140357a1d73f2c2e86
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SHA1
b0e59c5cda9b5a336b1db42ef75f4f29853f5098
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SHA256
809a51672e7a7731fef45bf159d61b4b43b7e59bedb16a7890cb5c348706a4cf
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SHA512
c4ed26916ac89e84696f3738bcdf7a046b007f264cb3cad73d6fbf585db5d33ae5d2fb50837268e56ba38e61ffe4119c4beac55d4e46051edb8b20c7bd68b500
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SSDEEP
384:X3tWZPzzxAm1vp5ZRoDt71+k/zxBSKrIPlnOy5o91I0Ip3682vh3Q:XO7zxAmpfytgk/26Iho92Q8253Q
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/2280-1-0x0000000000FF0000-0x0000000000FFE000-memory.dmp family_chaos behavioral1/files/0x00080000000120fb-6.dat family_chaos behavioral1/memory/2080-8-0x00000000008B0000-0x00000000008BE000-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 2944 bcdedit.exe 2916 bcdedit.exe -
pid Process 1072 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 2080 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-1-5-21-3551809350-4263495960-1443967649-1000\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\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\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\Favorites\Links\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\History\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Temporary Internet Files\Content.IE5\L2BFB2JG\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\Maintenance\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\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\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\IQBL5G2Z\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\YQ90JXIE\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\MYC3PENY\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\Favorites\Links for United States\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\Public\Music\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\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\Admin\Saved Games\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.ini svchost.exe File opened for modification C:\Users\Public\Documents\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 F:\$RECYCLE.BIN\S-1-5-21-3551809350-4263495960-1443967649-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\All Users\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\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Windows\SendTo\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 Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\7CO3PKGI\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 2868 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 716 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2080 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 2080 svchost.exe 2080 svchost.exe 2080 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe Token: SeDebugPrivilege 2080 svchost.exe Token: SeBackupPrivilege 2752 vssvc.exe Token: SeRestorePrivilege 2752 vssvc.exe Token: SeAuditPrivilege 2752 vssvc.exe Token: SeIncreaseQuotaPrivilege 1620 WMIC.exe Token: SeSecurityPrivilege 1620 WMIC.exe Token: SeTakeOwnershipPrivilege 1620 WMIC.exe Token: SeLoadDriverPrivilege 1620 WMIC.exe Token: SeSystemProfilePrivilege 1620 WMIC.exe Token: SeSystemtimePrivilege 1620 WMIC.exe Token: SeProfSingleProcessPrivilege 1620 WMIC.exe Token: SeIncBasePriorityPrivilege 1620 WMIC.exe Token: SeCreatePagefilePrivilege 1620 WMIC.exe Token: SeBackupPrivilege 1620 WMIC.exe Token: SeRestorePrivilege 1620 WMIC.exe Token: SeShutdownPrivilege 1620 WMIC.exe Token: SeDebugPrivilege 1620 WMIC.exe Token: SeSystemEnvironmentPrivilege 1620 WMIC.exe Token: SeRemoteShutdownPrivilege 1620 WMIC.exe Token: SeUndockPrivilege 1620 WMIC.exe Token: SeManageVolumePrivilege 1620 WMIC.exe Token: 33 1620 WMIC.exe Token: 34 1620 WMIC.exe Token: 35 1620 WMIC.exe Token: SeIncreaseQuotaPrivilege 1620 WMIC.exe Token: SeSecurityPrivilege 1620 WMIC.exe Token: SeTakeOwnershipPrivilege 1620 WMIC.exe Token: SeLoadDriverPrivilege 1620 WMIC.exe Token: SeSystemProfilePrivilege 1620 WMIC.exe Token: SeSystemtimePrivilege 1620 WMIC.exe Token: SeProfSingleProcessPrivilege 1620 WMIC.exe Token: SeIncBasePriorityPrivilege 1620 WMIC.exe Token: SeCreatePagefilePrivilege 1620 WMIC.exe Token: SeBackupPrivilege 1620 WMIC.exe Token: SeRestorePrivilege 1620 WMIC.exe Token: SeShutdownPrivilege 1620 WMIC.exe Token: SeDebugPrivilege 1620 WMIC.exe Token: SeSystemEnvironmentPrivilege 1620 WMIC.exe Token: SeRemoteShutdownPrivilege 1620 WMIC.exe Token: SeUndockPrivilege 1620 WMIC.exe Token: SeManageVolumePrivilege 1620 WMIC.exe Token: 33 1620 WMIC.exe Token: 34 1620 WMIC.exe Token: 35 1620 WMIC.exe Token: SeBackupPrivilege 1460 wbengine.exe Token: SeRestorePrivilege 1460 wbengine.exe Token: SeSecurityPrivilege 1460 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2280 wrote to memory of 2080 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 30 PID 2280 wrote to memory of 2080 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 30 PID 2280 wrote to memory of 2080 2280 2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe 30 PID 2080 wrote to memory of 2716 2080 svchost.exe 31 PID 2080 wrote to memory of 2716 2080 svchost.exe 31 PID 2080 wrote to memory of 2716 2080 svchost.exe 31 PID 2716 wrote to memory of 2868 2716 cmd.exe 33 PID 2716 wrote to memory of 2868 2716 cmd.exe 33 PID 2716 wrote to memory of 2868 2716 cmd.exe 33 PID 2716 wrote to memory of 1620 2716 cmd.exe 36 PID 2716 wrote to memory of 1620 2716 cmd.exe 36 PID 2716 wrote to memory of 1620 2716 cmd.exe 36 PID 2080 wrote to memory of 1056 2080 svchost.exe 38 PID 2080 wrote to memory of 1056 2080 svchost.exe 38 PID 2080 wrote to memory of 1056 2080 svchost.exe 38 PID 1056 wrote to memory of 2944 1056 cmd.exe 40 PID 1056 wrote to memory of 2944 1056 cmd.exe 40 PID 1056 wrote to memory of 2944 1056 cmd.exe 40 PID 1056 wrote to memory of 2916 1056 cmd.exe 41 PID 1056 wrote to memory of 2916 1056 cmd.exe 41 PID 1056 wrote to memory of 2916 1056 cmd.exe 41 PID 2080 wrote to memory of 2424 2080 svchost.exe 42 PID 2080 wrote to memory of 2424 2080 svchost.exe 42 PID 2080 wrote to memory of 2424 2080 svchost.exe 42 PID 2424 wrote to memory of 1072 2424 cmd.exe 44 PID 2424 wrote to memory of 1072 2424 cmd.exe 44 PID 2424 wrote to memory of 1072 2424 cmd.exe 44 PID 2080 wrote to memory of 716 2080 svchost.exe 49 PID 2080 wrote to memory of 716 2080 svchost.exe 49 PID 2080 wrote to memory of 716 2080 svchost.exe 49 -
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\2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-15_bc020a8f9d02f4140357a1d73f2c2e86_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280 -
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:2080 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2716 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2868
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1620
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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:1056 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2944
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2916
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1072
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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:716
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2752
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1460
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1524
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2860
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
27KB
MD5bc020a8f9d02f4140357a1d73f2c2e86
SHA1b0e59c5cda9b5a336b1db42ef75f4f29853f5098
SHA256809a51672e7a7731fef45bf159d61b4b43b7e59bedb16a7890cb5c348706a4cf
SHA512c4ed26916ac89e84696f3738bcdf7a046b007f264cb3cad73d6fbf585db5d33ae5d2fb50837268e56ba38e61ffe4119c4beac55d4e46051edb8b20c7bd68b500
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0