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Analysis
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max time kernel
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max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
02/02/2025, 04:22
Behavioral task
behavioral1
Sample
2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
Resource
win10v2004-20250129-en
General
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Target
2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
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Size
195KB
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MD5
3a6dcb521541f45851833615856452e1
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SHA1
43e7ae516237531c22cd69b7ca37a0ff39e9488e
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SHA256
f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c
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SHA512
e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430
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SSDEEP
3072:woRNeWr98RskBc93hxfkB+7kjCGX8q1qz2/HuHZZ57/Euv8RnNaO:rnr98RI8sAwxWHaEi
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
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/1880-1-0x00000000013C0000-0x00000000013F8000-memory.dmp family_chaos behavioral1/files/0x0004000000004ed7-6.dat family_chaos behavioral1/memory/2992-8-0x00000000013D0000-0x0000000001408000-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 624 bcdedit.exe 3028 bcdedit.exe -
pid Process 2296 wbadmin.exe -
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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2992 svchost.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\Documents\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\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\SendTo\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Contacts\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\Libraries\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\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Programs\Accessories\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9l8adfz4l.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 2192 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1604 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2992 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 2992 svchost.exe 2992 svchost.exe 2992 svchost.exe 2992 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe Token: SeDebugPrivilege 2992 svchost.exe Token: SeBackupPrivilege 2076 vssvc.exe Token: SeRestorePrivilege 2076 vssvc.exe Token: SeAuditPrivilege 2076 vssvc.exe Token: SeIncreaseQuotaPrivilege 740 WMIC.exe Token: SeSecurityPrivilege 740 WMIC.exe Token: SeTakeOwnershipPrivilege 740 WMIC.exe Token: SeLoadDriverPrivilege 740 WMIC.exe Token: SeSystemProfilePrivilege 740 WMIC.exe Token: SeSystemtimePrivilege 740 WMIC.exe Token: SeProfSingleProcessPrivilege 740 WMIC.exe Token: SeIncBasePriorityPrivilege 740 WMIC.exe Token: SeCreatePagefilePrivilege 740 WMIC.exe Token: SeBackupPrivilege 740 WMIC.exe Token: SeRestorePrivilege 740 WMIC.exe Token: SeShutdownPrivilege 740 WMIC.exe Token: SeDebugPrivilege 740 WMIC.exe Token: SeSystemEnvironmentPrivilege 740 WMIC.exe Token: SeRemoteShutdownPrivilege 740 WMIC.exe Token: SeUndockPrivilege 740 WMIC.exe Token: SeManageVolumePrivilege 740 WMIC.exe Token: 33 740 WMIC.exe Token: 34 740 WMIC.exe Token: 35 740 WMIC.exe Token: SeIncreaseQuotaPrivilege 740 WMIC.exe Token: SeSecurityPrivilege 740 WMIC.exe Token: SeTakeOwnershipPrivilege 740 WMIC.exe Token: SeLoadDriverPrivilege 740 WMIC.exe Token: SeSystemProfilePrivilege 740 WMIC.exe Token: SeSystemtimePrivilege 740 WMIC.exe Token: SeProfSingleProcessPrivilege 740 WMIC.exe Token: SeIncBasePriorityPrivilege 740 WMIC.exe Token: SeCreatePagefilePrivilege 740 WMIC.exe Token: SeBackupPrivilege 740 WMIC.exe Token: SeRestorePrivilege 740 WMIC.exe Token: SeShutdownPrivilege 740 WMIC.exe Token: SeDebugPrivilege 740 WMIC.exe Token: SeSystemEnvironmentPrivilege 740 WMIC.exe Token: SeRemoteShutdownPrivilege 740 WMIC.exe Token: SeUndockPrivilege 740 WMIC.exe Token: SeManageVolumePrivilege 740 WMIC.exe Token: 33 740 WMIC.exe Token: 34 740 WMIC.exe Token: 35 740 WMIC.exe Token: SeBackupPrivilege 2376 wbengine.exe Token: SeRestorePrivilege 2376 wbengine.exe Token: SeSecurityPrivilege 2376 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1880 wrote to memory of 2992 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 31 PID 1880 wrote to memory of 2992 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 31 PID 1880 wrote to memory of 2992 1880 2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe 31 PID 2992 wrote to memory of 2288 2992 svchost.exe 33 PID 2992 wrote to memory of 2288 2992 svchost.exe 33 PID 2992 wrote to memory of 2288 2992 svchost.exe 33 PID 2288 wrote to memory of 2192 2288 cmd.exe 35 PID 2288 wrote to memory of 2192 2288 cmd.exe 35 PID 2288 wrote to memory of 2192 2288 cmd.exe 35 PID 2288 wrote to memory of 740 2288 cmd.exe 38 PID 2288 wrote to memory of 740 2288 cmd.exe 38 PID 2288 wrote to memory of 740 2288 cmd.exe 38 PID 2992 wrote to memory of 1384 2992 svchost.exe 40 PID 2992 wrote to memory of 1384 2992 svchost.exe 40 PID 2992 wrote to memory of 1384 2992 svchost.exe 40 PID 1384 wrote to memory of 624 1384 cmd.exe 42 PID 1384 wrote to memory of 624 1384 cmd.exe 42 PID 1384 wrote to memory of 624 1384 cmd.exe 42 PID 1384 wrote to memory of 3028 1384 cmd.exe 43 PID 1384 wrote to memory of 3028 1384 cmd.exe 43 PID 1384 wrote to memory of 3028 1384 cmd.exe 43 PID 2992 wrote to memory of 1304 2992 svchost.exe 44 PID 2992 wrote to memory of 1304 2992 svchost.exe 44 PID 2992 wrote to memory of 1304 2992 svchost.exe 44 PID 1304 wrote to memory of 2296 1304 cmd.exe 46 PID 1304 wrote to memory of 2296 1304 cmd.exe 46 PID 1304 wrote to memory of 2296 1304 cmd.exe 46 PID 2992 wrote to memory of 1604 2992 svchost.exe 50 PID 2992 wrote to memory of 1604 2992 svchost.exe 50 PID 2992 wrote to memory of 1604 2992 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\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1880 -
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:2992 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2192
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:740
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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:1384 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:624
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3028
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1304 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2296
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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:1604
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2076
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2376
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:756
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1264
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
195KB
MD53a6dcb521541f45851833615856452e1
SHA143e7ae516237531c22cd69b7ca37a0ff39e9488e
SHA256f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c
SHA512e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430
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Filesize
913B
MD5ed0389d2c63d4de9b414924025c4b669
SHA12572880a7ce991d4a360f5f9f3c91c8efcd6af61
SHA25658d7086d971c5d952696e412f07e0a5131af143f2e996b6cb9adf4ef1aeb80ae
SHA5120b6392ed883ce5d3d995ccd48430d4c494ac847a86c4f20f7e2e47c9708170690cdc0d5d569f5c7c8d90baf6ea1f0295a83eeb802e5f03442d716f41c9965a95