Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
23/03/2025, 04:25
Behavioral task
behavioral1
Sample
2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe
Resource
win10v2004-20250314-en
General
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Target
2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
3844f4425e6c8080d98a8e393be64321
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SHA1
d028d8531fb246c75af144856822baefdaf1e49d
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SHA256
eefef45e9535ca06d46c179e6a6b757b0a0400adf65d33bbc436128e61613a21
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SHA512
884c84943799d42dbd22521cad43f9bb26aba9072a3d33115b0b723dcf453a25b5983ec2838efcdd1c073c7c334944d239c94fb99c3951a8090b8708e31ffc1e
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SSDEEP
384:J3MLWHn3kIeoLF4+BlpFD4+CTJVr91CzEbLLe6:pn3kIhe+7pN4+6Vr9iEbfe6
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/2696-1-0x00000000010E0000-0x00000000010EC000-memory.dmp family_chaos behavioral1/files/0x000c000000012268-6.dat family_chaos behavioral1/memory/2692-8-0x0000000001100000-0x000000000110C000-memory.dmp family_chaos -
Chaos family
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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\setup.url setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini setup.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt setup.exe -
Executes dropped EXE 1 IoCs
pid Process 2692 setup.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\Pictures\desktop.ini setup.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini setup.exe File opened for modification C:\Users\Admin\Searches\desktop.ini setup.exe File opened for modification C:\Users\Admin\Videos\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini setup.exe File opened for modification C:\Users\Admin\Links\desktop.ini setup.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini setup.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini setup.exe File opened for modification C:\Users\Public\Documents\desktop.ini setup.exe File opened for modification C:\Users\Admin\Music\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini setup.exe File opened for modification C:\Users\Public\Music\desktop.ini setup.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini setup.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini setup.exe File opened for modification C:\Users\Public\Videos\desktop.ini setup.exe File opened for modification C:\Users\Admin\Documents\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini setup.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini setup.exe File opened for modification C:\Users\Public\Desktop\desktop.ini setup.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini setup.exe File opened for modification C:\Users\Public\Pictures\desktop.ini setup.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini setup.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini setup.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini setup.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini setup.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1640 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2692 setup.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 2692 setup.exe 2692 setup.exe 2692 setup.exe 2692 setup.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2692 setup.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2696 wrote to memory of 2692 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 30 PID 2696 wrote to memory of 2692 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 30 PID 2696 wrote to memory of 2692 2696 2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe 30 PID 2692 wrote to memory of 1640 2692 setup.exe 31 PID 2692 wrote to memory of 1640 2692 setup.exe 31 PID 2692 wrote to memory of 1640 2692 setup.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Roaming\setup.exe"C:\Users\Admin\AppData\Roaming\setup.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:2692 -
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:1640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
22KB
MD53844f4425e6c8080d98a8e393be64321
SHA1d028d8531fb246c75af144856822baefdaf1e49d
SHA256eefef45e9535ca06d46c179e6a6b757b0a0400adf65d33bbc436128e61613a21
SHA512884c84943799d42dbd22521cad43f9bb26aba9072a3d33115b0b723dcf453a25b5983ec2838efcdd1c073c7c334944d239c94fb99c3951a8090b8708e31ffc1e
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Filesize
952B
MD5ce4ac7c8ce403fed9d431f141f78477e
SHA1ce15b205a69ac0a4b57437b2c4878fa12cf90567
SHA2566da207a510ca233577bf0bd830d3971c72eb2250bb8d4c148817e12e58efed21
SHA51231a3ec0f2cb0b076d0730b7d841aba5ae5296d6e3bb9fb81cf6438a7619cfca755a8e3dff8b436aad52bebd40866bbfce371518da5575d1f817c99b2c62f6438