General
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Target
https://github.com/Endermanch/MalwareDatabase/raw/master/ransomwares/WannaCrypt0r.zip
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Sample
220825-vkk5ragadl
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/Endermanch/MalwareDatabase/raw/master/ransomwares/WannaCrypt0r.zip
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
https://github.com/Endermanch/MalwareDatabase/raw/master/ransomwares/WannaCrypt0r.zip
Resource
win10-20220812-en
Behavioral task
behavioral3
Sample
https://github.com/Endermanch/MalwareDatabase/raw/master/ransomwares/WannaCrypt0r.zip
Resource
win10v2004-20220812-en
Malware Config
Extracted
C:\Users\Admin\Desktop\@Please_Read_Me@.txt
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Extracted
C:\Users\Admin\Desktop\@Please_Read_Me@.txt
wannacry
115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn
Targets
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Target
https://github.com/Endermanch/MalwareDatabase/raw/master/ransomwares/WannaCrypt0r.zip
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Downloads MZ/PE file
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Executes dropped EXE
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
Registry Run Keys / Startup Folder
1Bootkit
1Scheduled Task
1Hidden Files and Directories
1Defense Evasion
File Deletion
2File Permissions Modification
1Modify Registry
3Hidden Files and Directories
1