General
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Target
https://dropmeafile.com/#4da74a3119
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Sample
240518-h1nvcshb5v
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://dropmeafile.com/#4da74a3119
Resource
win11-20240508-en
Malware Config
Extracted
C:\Users\Admin\Downloads\!Please Read Me!.txt
wannacry
15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1
Targets
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Target
https://dropmeafile.com/#4da74a3119
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Suspicious use of NtCreateProcessExOtherParentProcess
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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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Drops file in Drivers directory
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Sets service image path in registry
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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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Registers COM server for autorun
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Adds Run key to start application
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Checks for any installed AV software in registry
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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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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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MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Defense Evasion
Indicator Removal
1File Deletion
1Modify Registry
5Impair Defenses
1Disable or Modify Tools
1Pre-OS Boot
1Bootkit
1