Analysis
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max time kernel
122s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
02-08-2024 06:52
Behavioral task
behavioral1
Sample
2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe
Resource
win7-20240704-en
windows7-x64
21 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe
Resource
win10v2004-20240730-en
windows10-2004-x64
24 signatures
150 seconds
General
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Target
2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe
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Size
238KB
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MD5
86faf18098e56c8c610b960d684a21d8
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SHA1
db0eb3968c11da86490b679e7daded59b6006310
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SHA256
4e758d011d1d615ebd05c6ffe441dedf5d371efb1dca1c624ec896f56de19979
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SHA512
8c87c1847edeb56fc46d0e1adcf3bb8cc024d63fa9d2d49dd7bda68efb1c5fe473f001250408accccb86915cc5f077a46a28189b073cdd557d9042e48c7f4a9b
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SSDEEP
3072:K6Mq98ySh8of8yx/se2nz2j0XdNkgVjdLyWNgXc0IohbnivKUbUtHO9sO3LccckL:K6Mq9e2q+nRfkg7Scy4KUQHO9h3LN
Malware Config
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/1648-1-0x0000000000B90000-0x0000000000BD2000-memory.dmp family_chaos behavioral1/memory/1996-8-0x0000000001270000-0x00000000012B2000-memory.dmp family_chaos behavioral1/files/0x0007000000012119-7.dat 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 2860 bcdedit.exe 2724 bcdedit.exe -
Renames multiple (196) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2940 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\Womp-Womp.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1996 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-1-5-21-3434294380-2554721341-1919518612-1000\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\AppData\Local\Microsoft\Windows\History\History.IE5\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\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 F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Windows\Start Menu\Programs\Accessories\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\Start Menu\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\Pictures\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\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\JF1SL0MP\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\Favorites\Links\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\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\3CPCT0UC\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\84790KOV\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\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample 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\Libraries\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Public\Music\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\Videos\Sample Videos\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\SendTo\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\Public\Videos\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\Roaming\Microsoft\Windows\Start Menu\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\Admin\AppData\Local\Microsoft\Feeds Cache\BNS2IARI\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XW1885AL\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\48RNM7SN\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\AppData\Local\Microsoft\Feeds Cache\98I61CZ5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BRLV7L3G\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7zwl8cotx.jpg" 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 2804 vssadmin.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1996 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 1996 svchost.exe 1996 svchost.exe 1996 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe Token: SeDebugPrivilege 1996 svchost.exe Token: SeBackupPrivilege 2408 vssvc.exe Token: SeRestorePrivilege 2408 vssvc.exe Token: SeAuditPrivilege 2408 vssvc.exe Token: SeIncreaseQuotaPrivilege 2628 WMIC.exe Token: SeSecurityPrivilege 2628 WMIC.exe Token: SeTakeOwnershipPrivilege 2628 WMIC.exe Token: SeLoadDriverPrivilege 2628 WMIC.exe Token: SeSystemProfilePrivilege 2628 WMIC.exe Token: SeSystemtimePrivilege 2628 WMIC.exe Token: SeProfSingleProcessPrivilege 2628 WMIC.exe Token: SeIncBasePriorityPrivilege 2628 WMIC.exe Token: SeCreatePagefilePrivilege 2628 WMIC.exe Token: SeBackupPrivilege 2628 WMIC.exe Token: SeRestorePrivilege 2628 WMIC.exe Token: SeShutdownPrivilege 2628 WMIC.exe Token: SeDebugPrivilege 2628 WMIC.exe Token: SeSystemEnvironmentPrivilege 2628 WMIC.exe Token: SeRemoteShutdownPrivilege 2628 WMIC.exe Token: SeUndockPrivilege 2628 WMIC.exe Token: SeManageVolumePrivilege 2628 WMIC.exe Token: 33 2628 WMIC.exe Token: 34 2628 WMIC.exe Token: 35 2628 WMIC.exe Token: SeIncreaseQuotaPrivilege 2628 WMIC.exe Token: SeSecurityPrivilege 2628 WMIC.exe Token: SeTakeOwnershipPrivilege 2628 WMIC.exe Token: SeLoadDriverPrivilege 2628 WMIC.exe Token: SeSystemProfilePrivilege 2628 WMIC.exe Token: SeSystemtimePrivilege 2628 WMIC.exe Token: SeProfSingleProcessPrivilege 2628 WMIC.exe Token: SeIncBasePriorityPrivilege 2628 WMIC.exe Token: SeCreatePagefilePrivilege 2628 WMIC.exe Token: SeBackupPrivilege 2628 WMIC.exe Token: SeRestorePrivilege 2628 WMIC.exe Token: SeShutdownPrivilege 2628 WMIC.exe Token: SeDebugPrivilege 2628 WMIC.exe Token: SeSystemEnvironmentPrivilege 2628 WMIC.exe Token: SeRemoteShutdownPrivilege 2628 WMIC.exe Token: SeUndockPrivilege 2628 WMIC.exe Token: SeManageVolumePrivilege 2628 WMIC.exe Token: 33 2628 WMIC.exe Token: 34 2628 WMIC.exe Token: 35 2628 WMIC.exe Token: SeBackupPrivilege 2680 wbengine.exe Token: SeRestorePrivilege 2680 wbengine.exe Token: SeSecurityPrivilege 2680 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1648 wrote to memory of 1996 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 31 PID 1648 wrote to memory of 1996 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 31 PID 1648 wrote to memory of 1996 1648 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe 31 PID 1996 wrote to memory of 2728 1996 svchost.exe 32 PID 1996 wrote to memory of 2728 1996 svchost.exe 32 PID 1996 wrote to memory of 2728 1996 svchost.exe 32 PID 2728 wrote to memory of 2804 2728 cmd.exe 34 PID 2728 wrote to memory of 2804 2728 cmd.exe 34 PID 2728 wrote to memory of 2804 2728 cmd.exe 34 PID 2728 wrote to memory of 2628 2728 cmd.exe 37 PID 2728 wrote to memory of 2628 2728 cmd.exe 37 PID 2728 wrote to memory of 2628 2728 cmd.exe 37 PID 1996 wrote to memory of 2548 1996 svchost.exe 39 PID 1996 wrote to memory of 2548 1996 svchost.exe 39 PID 1996 wrote to memory of 2548 1996 svchost.exe 39 PID 2548 wrote to memory of 2860 2548 cmd.exe 41 PID 2548 wrote to memory of 2860 2548 cmd.exe 41 PID 2548 wrote to memory of 2860 2548 cmd.exe 41 PID 2548 wrote to memory of 2724 2548 cmd.exe 42 PID 2548 wrote to memory of 2724 2548 cmd.exe 42 PID 2548 wrote to memory of 2724 2548 cmd.exe 42 PID 1996 wrote to memory of 1144 1996 svchost.exe 43 PID 1996 wrote to memory of 1144 1996 svchost.exe 43 PID 1996 wrote to memory of 1144 1996 svchost.exe 43 PID 1144 wrote to memory of 2940 1144 cmd.exe 45 PID 1144 wrote to memory of 2940 1144 cmd.exe 45 PID 1144 wrote to memory of 2940 1144 cmd.exe 45 PID 1996 wrote to memory of 2340 1996 svchost.exe 50 PID 1996 wrote to memory of 2340 1996 svchost.exe 50 PID 1996 wrote to memory of 2340 1996 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\2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648 -
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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2728 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2804
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2628
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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:2548 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2860
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2724
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1144 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2940
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Womp-Womp.txt3⤵PID:2340
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2408
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2680
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2948
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2980
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
17B
MD51aae33bf814be3680af0c9e9d3f6bf06
SHA117cb8561c9d25c03eebd8691cd19f90b50916662
SHA2566cab9d341be7e586c79eb547831906554eb6c12662a680e0992ed181a0ba691c
SHA512a28b1ac387afa4c6c5c76c3e510e7de58d426b12dd06d5efe3348214842a7da5621cf8a1bac93f609b140ed4c4c524784886f027c254c65525478219f699661d
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Filesize
238KB
MD586faf18098e56c8c610b960d684a21d8
SHA1db0eb3968c11da86490b679e7daded59b6006310
SHA2564e758d011d1d615ebd05c6ffe441dedf5d371efb1dca1c624ec896f56de19979
SHA5128c87c1847edeb56fc46d0e1adcf3bb8cc024d63fa9d2d49dd7bda68efb1c5fe473f001250408accccb86915cc5f077a46a28189b073cdd557d9042e48c7f4a9b
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Filesize
11KB
MD5b38f22dcc54bf75de8973435c7d228e1
SHA14f7bd57a437fd8197517b63a07142bb32a92bb16
SHA25648b048d0e8c82e89995fed9098ac5f3e83855198966e3a9dd6938676afaf2fd5
SHA51280c113e7dd9c2fdcf2048952b4da780eed959b1a8a91e303b92609762ef1e71aa43fec633a2da140557692654e278ad0846747ec3f8c2f0f4fc1814691c7b63a
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0