Analysis
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max time kernel
117s -
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
23/03/2025, 23:54
Behavioral task
behavioral1
Sample
2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe
Resource
win10v2004-20250313-en
General
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Target
2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe
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Size
2.4MB
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MD5
d3c77a381d509db6785a4d23b15d79d5
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SHA1
1b8031147c9084068a013a7230b2adedf8a03fef
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SHA256
f0b4cc9ca7207386fa06793a0fd2dd2b2d5a0ee019af0a7afbeb5b1665af4271
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SHA512
0636a78a892878cc73c997d90553a358dc09c0dc6439dc5507db71b483d7b90dfd80a4b26cf0329b136bff422b8a32759a255812591390217c97beaceac416cd
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SSDEEP
24576:lNQl+ulA8Msy1byaVJW9uyb/is+9qi/8EnTx4tTlR6:lNa+uBy1bHVJomsMqqfFKx
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/2160-1-0x0000000000280000-0x00000000004E6000-memory.dmp family_chaos behavioral1/files/0x0007000000012101-6.dat family_chaos behavioral1/memory/2648-7-0x0000000001140000-0x00000000013A6000-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 1488 bcdedit.exe 2180 bcdedit.exe -
pid Process 1624 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bruh.txt windowsdefender.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windowsdefender.url windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini windowsdefender.exe -
Executes dropped EXE 1 IoCs
pid Process 2648 windowsdefender.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\Searches\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Desktop\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Music\desktop.ini windowsdefender.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Links\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Documents\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Music\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Documents\desktop.ini windowsdefender.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\awuy5kzf2.jpg" windowsdefender.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 1304 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1676 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2648 windowsdefender.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 2648 windowsdefender.exe 2648 windowsdefender.exe 2648 windowsdefender.exe 2648 windowsdefender.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe Token: SeDebugPrivilege 2648 windowsdefender.exe Token: SeBackupPrivilege 1792 vssvc.exe Token: SeRestorePrivilege 1792 vssvc.exe Token: SeAuditPrivilege 1792 vssvc.exe Token: SeIncreaseQuotaPrivilege 1336 WMIC.exe Token: SeSecurityPrivilege 1336 WMIC.exe Token: SeTakeOwnershipPrivilege 1336 WMIC.exe Token: SeLoadDriverPrivilege 1336 WMIC.exe Token: SeSystemProfilePrivilege 1336 WMIC.exe Token: SeSystemtimePrivilege 1336 WMIC.exe Token: SeProfSingleProcessPrivilege 1336 WMIC.exe Token: SeIncBasePriorityPrivilege 1336 WMIC.exe Token: SeCreatePagefilePrivilege 1336 WMIC.exe Token: SeBackupPrivilege 1336 WMIC.exe Token: SeRestorePrivilege 1336 WMIC.exe Token: SeShutdownPrivilege 1336 WMIC.exe Token: SeDebugPrivilege 1336 WMIC.exe Token: SeSystemEnvironmentPrivilege 1336 WMIC.exe Token: SeRemoteShutdownPrivilege 1336 WMIC.exe Token: SeUndockPrivilege 1336 WMIC.exe Token: SeManageVolumePrivilege 1336 WMIC.exe Token: 33 1336 WMIC.exe Token: 34 1336 WMIC.exe Token: 35 1336 WMIC.exe Token: SeIncreaseQuotaPrivilege 1336 WMIC.exe Token: SeSecurityPrivilege 1336 WMIC.exe Token: SeTakeOwnershipPrivilege 1336 WMIC.exe Token: SeLoadDriverPrivilege 1336 WMIC.exe Token: SeSystemProfilePrivilege 1336 WMIC.exe Token: SeSystemtimePrivilege 1336 WMIC.exe Token: SeProfSingleProcessPrivilege 1336 WMIC.exe Token: SeIncBasePriorityPrivilege 1336 WMIC.exe Token: SeCreatePagefilePrivilege 1336 WMIC.exe Token: SeBackupPrivilege 1336 WMIC.exe Token: SeRestorePrivilege 1336 WMIC.exe Token: SeShutdownPrivilege 1336 WMIC.exe Token: SeDebugPrivilege 1336 WMIC.exe Token: SeSystemEnvironmentPrivilege 1336 WMIC.exe Token: SeRemoteShutdownPrivilege 1336 WMIC.exe Token: SeUndockPrivilege 1336 WMIC.exe Token: SeManageVolumePrivilege 1336 WMIC.exe Token: 33 1336 WMIC.exe Token: 34 1336 WMIC.exe Token: 35 1336 WMIC.exe Token: SeBackupPrivilege 1032 wbengine.exe Token: SeRestorePrivilege 1032 wbengine.exe Token: SeSecurityPrivilege 1032 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2160 wrote to memory of 2648 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 31 PID 2160 wrote to memory of 2648 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 31 PID 2160 wrote to memory of 2648 2160 2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe 31 PID 2648 wrote to memory of 2956 2648 windowsdefender.exe 33 PID 2648 wrote to memory of 2956 2648 windowsdefender.exe 33 PID 2648 wrote to memory of 2956 2648 windowsdefender.exe 33 PID 2956 wrote to memory of 1304 2956 cmd.exe 35 PID 2956 wrote to memory of 1304 2956 cmd.exe 35 PID 2956 wrote to memory of 1304 2956 cmd.exe 35 PID 2956 wrote to memory of 1336 2956 cmd.exe 38 PID 2956 wrote to memory of 1336 2956 cmd.exe 38 PID 2956 wrote to memory of 1336 2956 cmd.exe 38 PID 2648 wrote to memory of 1952 2648 windowsdefender.exe 40 PID 2648 wrote to memory of 1952 2648 windowsdefender.exe 40 PID 2648 wrote to memory of 1952 2648 windowsdefender.exe 40 PID 1952 wrote to memory of 1488 1952 cmd.exe 42 PID 1952 wrote to memory of 1488 1952 cmd.exe 42 PID 1952 wrote to memory of 1488 1952 cmd.exe 42 PID 1952 wrote to memory of 2180 1952 cmd.exe 43 PID 1952 wrote to memory of 2180 1952 cmd.exe 43 PID 1952 wrote to memory of 2180 1952 cmd.exe 43 PID 2648 wrote to memory of 648 2648 windowsdefender.exe 44 PID 2648 wrote to memory of 648 2648 windowsdefender.exe 44 PID 2648 wrote to memory of 648 2648 windowsdefender.exe 44 PID 648 wrote to memory of 1624 648 cmd.exe 46 PID 648 wrote to memory of 1624 648 cmd.exe 46 PID 648 wrote to memory of 1624 648 cmd.exe 46 PID 2648 wrote to memory of 1676 2648 windowsdefender.exe 50 PID 2648 wrote to memory of 1676 2648 windowsdefender.exe 50 PID 2648 wrote to memory of 1676 2648 windowsdefender.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\2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-23_d3c77a381d509db6785a4d23b15d79d5_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160 -
C:\Users\Admin\AppData\Roaming\windowsdefender.exe"C:\Users\Admin\AppData\Roaming\windowsdefender.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:2648 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2956 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1304
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1336
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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:1952 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1488
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2180
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:648 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1624
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\bruh.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1676
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1792
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1032
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3000
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1760
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.4MB
MD5d3c77a381d509db6785a4d23b15d79d5
SHA11b8031147c9084068a013a7230b2adedf8a03fef
SHA256f0b4cc9ca7207386fa06793a0fd2dd2b2d5a0ee019af0a7afbeb5b1665af4271
SHA5120636a78a892878cc73c997d90553a358dc09c0dc6439dc5507db71b483d7b90dfd80a4b26cf0329b136bff422b8a32759a255812591390217c97beaceac416cd
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Filesize
292B
MD577718d329c0a749558fa94d4f6573036
SHA1c2e6873c2a39944ed0c779cd5c8f479862f6a6e9
SHA256e299ac3129c2dc99599080423ba6e68c3bc372b58cba6319e326f6e9266d22f1
SHA51267c227dcfcf45742a1e6bfea6f57eabbc347e864349b1cc917b2384ae8dd91d6b2702fdc863fb926707ccb54db27f1cf3001b4242220c1a5ab623151b1dd4162