Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
22/03/2025, 20:32
Behavioral task
behavioral1
Sample
2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe
Resource
win10v2004-20250314-en
General
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Target
2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
8b75fae87885a0b1a0c3c2b601d6e399
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SHA1
120224bd569c681c4cbdf879f341145081bd9317
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SHA256
a00428527fb92182aa0fce541e09b4d7dcb19b00af756f5e15c2dc7c6747bf93
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SHA512
6719ae41b3918ba58a036e57720303f2b864797b77863834de14451bf8b524c6138e3ab74237258b2a32b8d04498debcda593adbcf418565e714f0506dd5f3c9
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SSDEEP
384:13MLWHn3kIkfMU9asv1zpd8R4+CTJJr91Cz7bSbeS:Fn3kInqLvFp64+6Jr9i7baeS
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/988-1-0x0000000000B20000-0x0000000000B2C000-memory.dmp family_chaos behavioral1/files/0x000b000000012259-5.dat family_chaos behavioral1/memory/2820-7-0x0000000000390000-0x000000000039C000-memory.dmp family_chaos -
Chaos family
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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 2940 bcdedit.exe 1036 bcdedit.exe -
pid Process 1588 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\stub.url stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini stub.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt stub.exe -
Executes dropped EXE 1 IoCs
pid Process 2820 stub.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini stub.exe File opened for modification C:\Users\Admin\Searches\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini stub.exe File opened for modification C:\Users\Public\Desktop\desktop.ini stub.exe File opened for modification C:\Users\Admin\Documents\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini stub.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini stub.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini stub.exe File opened for modification C:\Users\Public\Documents\desktop.ini stub.exe File opened for modification C:\Users\Admin\Links\desktop.ini stub.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini stub.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini stub.exe File opened for modification C:\Users\Public\Music\desktop.ini stub.exe File opened for modification C:\Users\Public\Videos\desktop.ini stub.exe File opened for modification C:\Users\Admin\Music\desktop.ini stub.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini stub.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini stub.exe File opened for modification C:\Users\Public\Pictures\desktop.ini stub.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini stub.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini stub.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3533259084-2542256011-65585152-1000\desktop.ini stub.exe File opened for modification C:\Users\Admin\Videos\desktop.ini stub.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini stub.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini stub.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 2360 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1720 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2820 stub.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 2820 stub.exe 2820 stub.exe 2820 stub.exe 2820 stub.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2820 stub.exe Token: SeBackupPrivilege 2868 vssvc.exe Token: SeRestorePrivilege 2868 vssvc.exe Token: SeAuditPrivilege 2868 vssvc.exe Token: SeIncreaseQuotaPrivilege 2108 WMIC.exe Token: SeSecurityPrivilege 2108 WMIC.exe Token: SeTakeOwnershipPrivilege 2108 WMIC.exe Token: SeLoadDriverPrivilege 2108 WMIC.exe Token: SeSystemProfilePrivilege 2108 WMIC.exe Token: SeSystemtimePrivilege 2108 WMIC.exe Token: SeProfSingleProcessPrivilege 2108 WMIC.exe Token: SeIncBasePriorityPrivilege 2108 WMIC.exe Token: SeCreatePagefilePrivilege 2108 WMIC.exe Token: SeBackupPrivilege 2108 WMIC.exe Token: SeRestorePrivilege 2108 WMIC.exe Token: SeShutdownPrivilege 2108 WMIC.exe Token: SeDebugPrivilege 2108 WMIC.exe Token: SeSystemEnvironmentPrivilege 2108 WMIC.exe Token: SeRemoteShutdownPrivilege 2108 WMIC.exe Token: SeUndockPrivilege 2108 WMIC.exe Token: SeManageVolumePrivilege 2108 WMIC.exe Token: 33 2108 WMIC.exe Token: 34 2108 WMIC.exe Token: 35 2108 WMIC.exe Token: SeIncreaseQuotaPrivilege 2108 WMIC.exe Token: SeSecurityPrivilege 2108 WMIC.exe Token: SeTakeOwnershipPrivilege 2108 WMIC.exe Token: SeLoadDriverPrivilege 2108 WMIC.exe Token: SeSystemProfilePrivilege 2108 WMIC.exe Token: SeSystemtimePrivilege 2108 WMIC.exe Token: SeProfSingleProcessPrivilege 2108 WMIC.exe Token: SeIncBasePriorityPrivilege 2108 WMIC.exe Token: SeCreatePagefilePrivilege 2108 WMIC.exe Token: SeBackupPrivilege 2108 WMIC.exe Token: SeRestorePrivilege 2108 WMIC.exe Token: SeShutdownPrivilege 2108 WMIC.exe Token: SeDebugPrivilege 2108 WMIC.exe Token: SeSystemEnvironmentPrivilege 2108 WMIC.exe Token: SeRemoteShutdownPrivilege 2108 WMIC.exe Token: SeUndockPrivilege 2108 WMIC.exe Token: SeManageVolumePrivilege 2108 WMIC.exe Token: 33 2108 WMIC.exe Token: 34 2108 WMIC.exe Token: 35 2108 WMIC.exe Token: SeBackupPrivilege 908 wbengine.exe Token: SeRestorePrivilege 908 wbengine.exe Token: SeSecurityPrivilege 908 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 988 wrote to memory of 2820 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 31 PID 988 wrote to memory of 2820 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 31 PID 988 wrote to memory of 2820 988 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 31 PID 2820 wrote to memory of 1888 2820 stub.exe 32 PID 2820 wrote to memory of 1888 2820 stub.exe 32 PID 2820 wrote to memory of 1888 2820 stub.exe 32 PID 1888 wrote to memory of 2360 1888 cmd.exe 34 PID 1888 wrote to memory of 2360 1888 cmd.exe 34 PID 1888 wrote to memory of 2360 1888 cmd.exe 34 PID 1888 wrote to memory of 2108 1888 cmd.exe 38 PID 1888 wrote to memory of 2108 1888 cmd.exe 38 PID 1888 wrote to memory of 2108 1888 cmd.exe 38 PID 2820 wrote to memory of 2140 2820 stub.exe 40 PID 2820 wrote to memory of 2140 2820 stub.exe 40 PID 2820 wrote to memory of 2140 2820 stub.exe 40 PID 2140 wrote to memory of 2940 2140 cmd.exe 42 PID 2140 wrote to memory of 2940 2140 cmd.exe 42 PID 2140 wrote to memory of 2940 2140 cmd.exe 42 PID 2140 wrote to memory of 1036 2140 cmd.exe 43 PID 2140 wrote to memory of 1036 2140 cmd.exe 43 PID 2140 wrote to memory of 1036 2140 cmd.exe 43 PID 2820 wrote to memory of 2444 2820 stub.exe 44 PID 2820 wrote to memory of 2444 2820 stub.exe 44 PID 2820 wrote to memory of 2444 2820 stub.exe 44 PID 2444 wrote to memory of 1588 2444 cmd.exe 46 PID 2444 wrote to memory of 1588 2444 cmd.exe 46 PID 2444 wrote to memory of 1588 2444 cmd.exe 46 PID 2820 wrote to memory of 1720 2820 stub.exe 50 PID 2820 wrote to memory of 1720 2820 stub.exe 50 PID 2820 wrote to memory of 1720 2820 stub.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\2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:988 -
C:\Users\Admin\AppData\Roaming\stub.exe"C:\Users\Admin\AppData\Roaming\stub.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:2820 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1888 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2360
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2108
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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:2140 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2940
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1036
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2444 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1588
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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:1720
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:908
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2168
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:696
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
22KB
MD58b75fae87885a0b1a0c3c2b601d6e399
SHA1120224bd569c681c4cbdf879f341145081bd9317
SHA256a00428527fb92182aa0fce541e09b4d7dcb19b00af756f5e15c2dc7c6747bf93
SHA5126719ae41b3918ba58a036e57720303f2b864797b77863834de14451bf8b524c6138e3ab74237258b2a32b8d04498debcda593adbcf418565e714f0506dd5f3c9
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Filesize
961B
MD576cf4b4b048d3adad48300ddb890b166
SHA11099a3ea6d9b92ff9e9fb1fbcaa51b907c65f911
SHA25655cd6766a0830a3e75eac538e955baa64a2aa5c7ca56661d080919cbe87ea472
SHA5120ac5807d857cf75ed64bbcd5fcd70d98e08f6a625f774da1402c56228aa492603a578d9461e388f793d3b718d7a19a659e68bb0a043013fb3ce02d71f5b20b4b