Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 22:02
Behavioral task
behavioral1
Sample
20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe
Resource
win10v2004-20240508-en
General
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Target
20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe
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Size
92KB
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MD5
341ed4e1073b23568aae89f31649a5fc
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SHA1
77c5487ed054c58e1ad6e96add144f55535f7e90
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SHA256
57c744dd855b31fb4fb2356ca93ad49f8a938a24670ed9c08ca2c1de8fecae7c
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SHA512
62f92136e8e085c9032d53a3b78d53eec69a52364354e139ea774c3cfc5642099ed8f20cebb5eea3f178a996b0b10d9418f0d19a4178206e37c5d28483ed41dd
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SSDEEP
768:x+rus5c9CIbOxDTqoH+/XW3bKGnvXI+940FYC4KGC6xxoyt9P:x+H5c9Cbqj4KUvPN6C6xP
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.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/3068-1-0x0000000000900000-0x000000000091C000-memory.dmp family_chaos behavioral1/files/0x000a0000000122ec-4.dat family_chaos behavioral1/memory/1272-7-0x0000000000FA0000-0x0000000000FBC000-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 3044 bcdedit.exe 2440 bcdedit.exe -
pid Process 2864 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 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 File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1272 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\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\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\Libraries\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\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\USLGY7LX\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\Admin\Saved Games\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\Internet Explorer\Quick Launch\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\03PVXV8P\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\Local\Microsoft\Windows\Burn\Burn\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\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\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\Public\Videos\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\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Accessibility\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\Windows Mail\Stationery\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\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\Ringtones\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\Public\Music\Sample Music\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\Public\Recorded TV\Sample Media\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\X7K1QVVO\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\2Y8NTX1F\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\1D5U9W0O\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\All Users\Microsoft\Windows\Start Menu\Programs\Startup\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\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9PLWLLW7\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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 2148 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2848 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1272 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe 1272 svchost.exe 1272 svchost.exe 1272 svchost.exe 1272 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe Token: SeDebugPrivilege 1272 svchost.exe Token: SeBackupPrivilege 2284 vssvc.exe Token: SeRestorePrivilege 2284 vssvc.exe Token: SeAuditPrivilege 2284 vssvc.exe Token: SeIncreaseQuotaPrivilege 2584 WMIC.exe Token: SeSecurityPrivilege 2584 WMIC.exe Token: SeTakeOwnershipPrivilege 2584 WMIC.exe Token: SeLoadDriverPrivilege 2584 WMIC.exe Token: SeSystemProfilePrivilege 2584 WMIC.exe Token: SeSystemtimePrivilege 2584 WMIC.exe Token: SeProfSingleProcessPrivilege 2584 WMIC.exe Token: SeIncBasePriorityPrivilege 2584 WMIC.exe Token: SeCreatePagefilePrivilege 2584 WMIC.exe Token: SeBackupPrivilege 2584 WMIC.exe Token: SeRestorePrivilege 2584 WMIC.exe Token: SeShutdownPrivilege 2584 WMIC.exe Token: SeDebugPrivilege 2584 WMIC.exe Token: SeSystemEnvironmentPrivilege 2584 WMIC.exe Token: SeRemoteShutdownPrivilege 2584 WMIC.exe Token: SeUndockPrivilege 2584 WMIC.exe Token: SeManageVolumePrivilege 2584 WMIC.exe Token: 33 2584 WMIC.exe Token: 34 2584 WMIC.exe Token: 35 2584 WMIC.exe Token: SeIncreaseQuotaPrivilege 2584 WMIC.exe Token: SeSecurityPrivilege 2584 WMIC.exe Token: SeTakeOwnershipPrivilege 2584 WMIC.exe Token: SeLoadDriverPrivilege 2584 WMIC.exe Token: SeSystemProfilePrivilege 2584 WMIC.exe Token: SeSystemtimePrivilege 2584 WMIC.exe Token: SeProfSingleProcessPrivilege 2584 WMIC.exe Token: SeIncBasePriorityPrivilege 2584 WMIC.exe Token: SeCreatePagefilePrivilege 2584 WMIC.exe Token: SeBackupPrivilege 2584 WMIC.exe Token: SeRestorePrivilege 2584 WMIC.exe Token: SeShutdownPrivilege 2584 WMIC.exe Token: SeDebugPrivilege 2584 WMIC.exe Token: SeSystemEnvironmentPrivilege 2584 WMIC.exe Token: SeRemoteShutdownPrivilege 2584 WMIC.exe Token: SeUndockPrivilege 2584 WMIC.exe Token: SeManageVolumePrivilege 2584 WMIC.exe Token: 33 2584 WMIC.exe Token: 34 2584 WMIC.exe Token: 35 2584 WMIC.exe Token: SeBackupPrivilege 3004 wbengine.exe Token: SeRestorePrivilege 3004 wbengine.exe Token: SeSecurityPrivilege 3004 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 3068 wrote to memory of 1272 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe 28 PID 3068 wrote to memory of 1272 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe 28 PID 3068 wrote to memory of 1272 3068 20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe 28 PID 1272 wrote to memory of 2712 1272 svchost.exe 29 PID 1272 wrote to memory of 2712 1272 svchost.exe 29 PID 1272 wrote to memory of 2712 1272 svchost.exe 29 PID 2712 wrote to memory of 2148 2712 cmd.exe 31 PID 2712 wrote to memory of 2148 2712 cmd.exe 31 PID 2712 wrote to memory of 2148 2712 cmd.exe 31 PID 2712 wrote to memory of 2584 2712 cmd.exe 34 PID 2712 wrote to memory of 2584 2712 cmd.exe 34 PID 2712 wrote to memory of 2584 2712 cmd.exe 34 PID 1272 wrote to memory of 3064 1272 svchost.exe 36 PID 1272 wrote to memory of 3064 1272 svchost.exe 36 PID 1272 wrote to memory of 3064 1272 svchost.exe 36 PID 3064 wrote to memory of 3044 3064 cmd.exe 38 PID 3064 wrote to memory of 3044 3064 cmd.exe 38 PID 3064 wrote to memory of 3044 3064 cmd.exe 38 PID 3064 wrote to memory of 2440 3064 cmd.exe 39 PID 3064 wrote to memory of 2440 3064 cmd.exe 39 PID 3064 wrote to memory of 2440 3064 cmd.exe 39 PID 1272 wrote to memory of 1956 1272 svchost.exe 40 PID 1272 wrote to memory of 1956 1272 svchost.exe 40 PID 1272 wrote to memory of 1956 1272 svchost.exe 40 PID 1956 wrote to memory of 2864 1956 cmd.exe 42 PID 1956 wrote to memory of 2864 1956 cmd.exe 42 PID 1956 wrote to memory of 2864 1956 cmd.exe 42 PID 1272 wrote to memory of 2848 1272 svchost.exe 48 PID 1272 wrote to memory of 2848 1272 svchost.exe 48 PID 1272 wrote to memory of 2848 1272 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\20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe"C:\Users\Admin\AppData\Local\Temp\20240526341ed4e1073b23568aae89f31649a5fcdestroyerwannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3068 -
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:1272 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2148
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2584
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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:3064 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3044
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2440
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1956 -
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:2848
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2284
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3004
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1012
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1360
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
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
92KB
MD5341ed4e1073b23568aae89f31649a5fc
SHA177c5487ed054c58e1ad6e96add144f55535f7e90
SHA25657c744dd855b31fb4fb2356ca93ad49f8a938a24670ed9c08ca2c1de8fecae7c
SHA51262f92136e8e085c9032d53a3b78d53eec69a52364354e139ea774c3cfc5642099ed8f20cebb5eea3f178a996b0b10d9418f0d19a4178206e37c5d28483ed41dd