Analysis
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max time kernel
93s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
01-03-2024 05:11
Behavioral task
behavioral1
Sample
2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe
Resource
win7-20240220-en
windows7-x64
15 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
17 signatures
150 seconds
General
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Target
2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe
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Size
202KB
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MD5
9653e79d0847b2d7e2961898f72eb803
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SHA1
23252371819e6ff69e3b01151f8d79b8480514d6
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SHA256
4594b05580b7672b11e8b3bcd8e6d5f4925802a2c23d42fb7c98871d9d7a27b2
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SHA512
ef0ec22068560ca472faf98b45351fb1b00f4e645468f172d8122a013f13541ab76d3727081381018c27b05c3113ed2ebc1a161973cff9ecbc79f0e2ffadef73
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SSDEEP
3072:PoOpgqdr9TjAoclgHqO6pshDPbSk7nQzwLb:br9TYO6sFeKnQk
Score
10/10
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4756-0-0x0000000000210000-0x000000000024A000-memory.dmp family_chaos behavioral2/files/0x000b000000023140-6.dat family_chaos -
Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/4756-0-0x0000000000210000-0x000000000024A000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x000b000000023140-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Renames multiple (249) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation svchost.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\oku.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3544 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) 34 IoCs
description ioc Process 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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3270530367-132075249-2153716227-1000\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 C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\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\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\an6ing8ru.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4848 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3544 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe 3544 svchost.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe Token: SeDebugPrivilege 3544 svchost.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4756 wrote to memory of 3544 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 91 PID 4756 wrote to memory of 3544 4756 2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe 91 PID 3544 wrote to memory of 4848 3544 svchost.exe 95 PID 3544 wrote to memory of 4848 3544 svchost.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-01_9653e79d0847b2d7e2961898f72eb803_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\oku.txt3⤵
- Opens file in notepad (likely ransom note)
PID:4848
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
202KB
MD59653e79d0847b2d7e2961898f72eb803
SHA123252371819e6ff69e3b01151f8d79b8480514d6
SHA2564594b05580b7672b11e8b3bcd8e6d5f4925802a2c23d42fb7c98871d9d7a27b2
SHA512ef0ec22068560ca472faf98b45351fb1b00f4e645468f172d8122a013f13541ab76d3727081381018c27b05c3113ed2ebc1a161973cff9ecbc79f0e2ffadef73
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Filesize
292B
MD587038f395fa96a43676bbdd53ea4afc6
SHA1d0883bdbe467d0911aaa42f8ee788227f2aa99a1
SHA25676ef029c65eab8d73a278d638a96ac5f76180cce803d54797f74f9204c0198f9
SHA5129cedb2c7bcd579639d22045bfecc2ce99fb65af807908d11ec323d666c71b03f221d232e921f06e7b63419ff48df11bfb01cee1cf1b343528147941e9c3938be