General
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Target
Main.exe
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Size
7.5MB
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Sample
241005-bk6a5swhqn
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MD5
3eb46bea293af2205928a34ddb51b8ec
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SHA1
7d63680f3d927990eac32daa58d2bfabb1aacb7e
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SHA256
6bfc6829a6c86f6ba652b97df5a9772e5d4c3f08a011f0553f229a2e7467f500
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SHA512
89a5d7d2e066c7b46827272720a3f5cbe20a9fbee0cf6ee0780c1f09594e6a3b6f8b805b2411381e142321dca12170d51939d4a3b490b46a7ebd940c8bfb1a15
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SSDEEP
196608:SgjXSqrf6UkWhJxe6YsdQL/neQ+gKeC3bc1I05O:ljFrfiWxtYsdQL/ejLe5
Static task
static1
Behavioral task
behavioral1
Sample
Main.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Main.exe
Resource
win11-20240802-en
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\Temp1_Ransomware.WannaCry.zip\@[email protected]
wannacry
13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94
Targets
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Target
Main.exe
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Size
7.5MB
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MD5
3eb46bea293af2205928a34ddb51b8ec
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SHA1
7d63680f3d927990eac32daa58d2bfabb1aacb7e
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SHA256
6bfc6829a6c86f6ba652b97df5a9772e5d4c3f08a011f0553f229a2e7467f500
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SHA512
89a5d7d2e066c7b46827272720a3f5cbe20a9fbee0cf6ee0780c1f09594e6a3b6f8b805b2411381e142321dca12170d51939d4a3b490b46a7ebd940c8bfb1a15
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SSDEEP
196608:SgjXSqrf6UkWhJxe6YsdQL/neQ+gKeC3bc1I05O:ljFrfiWxtYsdQL/ejLe5
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Downloads MZ/PE file
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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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Executes dropped EXE
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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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File and Directory Permissions Modification: Windows File and Directory Permissions Modification
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Legitimate hosting services abused for malware hosting/C2
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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 v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1File and Directory Permissions Modification
2Windows File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Indicator Removal
2File Deletion
2Modify Registry
4Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1