Analysis
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max time kernel
35s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
22-08-2024 11:27
Behavioral task
behavioral1
Sample
2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe
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Size
153KB
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MD5
54ac9ddc07c55d0eb31496d02f892d1d
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SHA1
843fcbed1d4112ce2c4caa885b8428ba6905f203
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SHA256
feb75c383454ed660e8b4dc038dc1c76927bbfac281c6614a73de8042a93ddcb
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SHA512
1d1949b2ce1cb7e1fba7776b67d7bba9395781f381b5a4a7aeb6d7827fee16480c6228bc3cf0eb2c18cd41bd4ff1a264c15cf7b6b278f3e6863a57cc58fb9a89
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SSDEEP
3072:AL18c9hj72AompDgm7EFFrLfPdxFzW5zmUEEa2XslNT0:q8c9BZBp1EvtxFzASUEEa2Xs3T
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\awdawdaw.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/1760-1-0x00000000000F0000-0x0000000000120000-memory.dmp family_chaos behavioral1/files/0x0009000000012264-6.dat family_chaos behavioral1/memory/2216-8-0x0000000000010000-0x0000000000040000-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 1076 bcdedit.exe 2324 bcdedit.exe -
pid Process 740 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\awdawdaw.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2216 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\Libraries\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Windows Mail\Stationery\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\Pictures\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\Windows\History\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\Music\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\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\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Feeds Cache\TWVGEE8A\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\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 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\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\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\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\Local\Microsoft\Windows\Burn\Burn\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\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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Temporary Internet Files\Content.IE5\4NH6FMWO\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\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\Admin\Favorites\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Feeds Cache\CGY9ZAGI\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\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\Videos\Sample Videos\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\Admin\Favorites\Links for United States\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\SendTo\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\Desktop\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\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tvtahgh5y.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 2748 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1000 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2216 svchost.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1760 2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe 2216 svchost.exe 2216 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1760 2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe Token: SeDebugPrivilege 2216 svchost.exe Token: SeBackupPrivilege 2656 vssvc.exe Token: SeRestorePrivilege 2656 vssvc.exe Token: SeAuditPrivilege 2656 vssvc.exe Token: SeIncreaseQuotaPrivilege 2280 WMIC.exe Token: SeSecurityPrivilege 2280 WMIC.exe Token: SeTakeOwnershipPrivilege 2280 WMIC.exe Token: SeLoadDriverPrivilege 2280 WMIC.exe Token: SeSystemProfilePrivilege 2280 WMIC.exe Token: SeSystemtimePrivilege 2280 WMIC.exe Token: SeProfSingleProcessPrivilege 2280 WMIC.exe Token: SeIncBasePriorityPrivilege 2280 WMIC.exe Token: SeCreatePagefilePrivilege 2280 WMIC.exe Token: SeBackupPrivilege 2280 WMIC.exe Token: SeRestorePrivilege 2280 WMIC.exe Token: SeShutdownPrivilege 2280 WMIC.exe Token: SeDebugPrivilege 2280 WMIC.exe Token: SeSystemEnvironmentPrivilege 2280 WMIC.exe Token: SeRemoteShutdownPrivilege 2280 WMIC.exe Token: SeUndockPrivilege 2280 WMIC.exe Token: SeManageVolumePrivilege 2280 WMIC.exe Token: 33 2280 WMIC.exe Token: 34 2280 WMIC.exe Token: 35 2280 WMIC.exe Token: SeIncreaseQuotaPrivilege 2280 WMIC.exe Token: SeSecurityPrivilege 2280 WMIC.exe Token: SeTakeOwnershipPrivilege 2280 WMIC.exe Token: SeLoadDriverPrivilege 2280 WMIC.exe Token: SeSystemProfilePrivilege 2280 WMIC.exe Token: SeSystemtimePrivilege 2280 WMIC.exe Token: SeProfSingleProcessPrivilege 2280 WMIC.exe Token: SeIncBasePriorityPrivilege 2280 WMIC.exe Token: SeCreatePagefilePrivilege 2280 WMIC.exe Token: SeBackupPrivilege 2280 WMIC.exe Token: SeRestorePrivilege 2280 WMIC.exe Token: SeShutdownPrivilege 2280 WMIC.exe Token: SeDebugPrivilege 2280 WMIC.exe Token: SeSystemEnvironmentPrivilege 2280 WMIC.exe Token: SeRemoteShutdownPrivilege 2280 WMIC.exe Token: SeUndockPrivilege 2280 WMIC.exe Token: SeManageVolumePrivilege 2280 WMIC.exe Token: 33 2280 WMIC.exe Token: 34 2280 WMIC.exe Token: 35 2280 WMIC.exe Token: SeBackupPrivilege 884 wbengine.exe Token: SeRestorePrivilege 884 wbengine.exe Token: SeSecurityPrivilege 884 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1760 wrote to memory of 2216 1760 2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe 29 PID 1760 wrote to memory of 2216 1760 2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe 29 PID 1760 wrote to memory of 2216 1760 2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe 29 PID 2216 wrote to memory of 2880 2216 svchost.exe 30 PID 2216 wrote to memory of 2880 2216 svchost.exe 30 PID 2216 wrote to memory of 2880 2216 svchost.exe 30 PID 2880 wrote to memory of 2748 2880 cmd.exe 32 PID 2880 wrote to memory of 2748 2880 cmd.exe 32 PID 2880 wrote to memory of 2748 2880 cmd.exe 32 PID 2880 wrote to memory of 2280 2880 cmd.exe 35 PID 2880 wrote to memory of 2280 2880 cmd.exe 35 PID 2880 wrote to memory of 2280 2880 cmd.exe 35 PID 2216 wrote to memory of 2336 2216 svchost.exe 37 PID 2216 wrote to memory of 2336 2216 svchost.exe 37 PID 2216 wrote to memory of 2336 2216 svchost.exe 37 PID 2336 wrote to memory of 1076 2336 cmd.exe 39 PID 2336 wrote to memory of 1076 2336 cmd.exe 39 PID 2336 wrote to memory of 1076 2336 cmd.exe 39 PID 2336 wrote to memory of 2324 2336 cmd.exe 40 PID 2336 wrote to memory of 2324 2336 cmd.exe 40 PID 2336 wrote to memory of 2324 2336 cmd.exe 40 PID 2216 wrote to memory of 2328 2216 svchost.exe 41 PID 2216 wrote to memory of 2328 2216 svchost.exe 41 PID 2216 wrote to memory of 2328 2216 svchost.exe 41 PID 2328 wrote to memory of 740 2328 cmd.exe 43 PID 2328 wrote to memory of 740 2328 cmd.exe 43 PID 2328 wrote to memory of 740 2328 cmd.exe 43 PID 2216 wrote to memory of 1000 2216 svchost.exe 48 PID 2216 wrote to memory of 1000 2216 svchost.exe 48 PID 2216 wrote to memory of 1000 2216 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\2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-22_54ac9ddc07c55d0eb31496d02f892d1d_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760 -
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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2216 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2880 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2748
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2280
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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:2336 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1076
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2324
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:740
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\awdawdaw.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1000
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2656
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:884
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1500
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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
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
153KB
MD554ac9ddc07c55d0eb31496d02f892d1d
SHA1843fcbed1d4112ce2c4caa885b8428ba6905f203
SHA256feb75c383454ed660e8b4dc038dc1c76927bbfac281c6614a73de8042a93ddcb
SHA5121d1949b2ce1cb7e1fba7776b67d7bba9395781f381b5a4a7aeb6d7827fee16480c6228bc3cf0eb2c18cd41bd4ff1a264c15cf7b6b278f3e6863a57cc58fb9a89