General
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Target
https://raw.githubusercontent.com/Viper4K/malware/master/MEMZ/MEMZ.bat
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Sample
230407-sw8n3she94
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://raw.githubusercontent.com/Viper4K/malware/master/MEMZ/MEMZ.bat
Resource
win10v2004-20230220-en
Malware Config
Targets
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Target
https://raw.githubusercontent.com/Viper4K/malware/master/MEMZ/MEMZ.bat
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Modifies security service
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Modifies boot configuration data using bcdedit
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Drops file in Drivers directory
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Sets service image path in registry
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Registers COM server for autorun
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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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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Drops file in System32 directory
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