General
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Target
Word.exe
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Size
3.6MB
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Sample
230125-zkzqcsag47
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MD5
e8340564caba7a2635af2c79cb7103eb
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SHA1
8c62c79508abe5ffa36608d1846dcb20b2a27137
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SHA256
acd5f35bfcc91c197d8ea08afe588454233114500255ed842b0589dc194ec466
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SHA512
b6dc6dfeff210222ee904ad9c8dc832e4bf9c27a84298d2817e320bd9308e6d647a5efcf6845a0ed2b0cebdb6539257cd07428bbdce3d5d5db23e8614503d9d2
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SSDEEP
98304:/uWtmPx3xiobns6osz1gyQ4BL995Bt9JWpVi6q:/9m5hi0HBtQ4P95L9g3i6q
Static task
static1
Behavioral task
behavioral1
Sample
Word.exe
Resource
win10v2004-20221111-en
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Targets
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Target
Word.exe
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Size
3.6MB
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MD5
e8340564caba7a2635af2c79cb7103eb
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SHA1
8c62c79508abe5ffa36608d1846dcb20b2a27137
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SHA256
acd5f35bfcc91c197d8ea08afe588454233114500255ed842b0589dc194ec466
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SHA512
b6dc6dfeff210222ee904ad9c8dc832e4bf9c27a84298d2817e320bd9308e6d647a5efcf6845a0ed2b0cebdb6539257cd07428bbdce3d5d5db23e8614503d9d2
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SSDEEP
98304:/uWtmPx3xiobns6osz1gyQ4BL995Bt9JWpVi6q:/9m5hi0HBtQ4P95L9g3i6q
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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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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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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v6
Persistence
Bootkit
1Hidden Files and Directories
1Registry Run Keys / Startup Folder
1Defense Evasion
File Deletion
1File and Directory Permissions Modification
1Hidden Files and Directories
1Modify Registry
4