General
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Target
Bark-1.5.1.dll
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Size
6.5MB
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Sample
240222-rlx9xsbc53
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MD5
c5afebc4d9076df032ea86b096e25b41
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SHA1
fb724dfbdaff027b9c9d1ebbbba18377fd47df07
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SHA256
1c664b4e8c029d4bf45836f4636445177cc020c03d5fbbb2a35b27a2f5c860bb
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SHA512
0a1a9459ad2594024c294937499fc99d6930e5bc757a39874fcc484ef50086467dae698e0b9b67aaacbe091195dc7ad174dea5d6af9f13c82e29af0c167d54b3
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SSDEEP
196608:jDFT/qGdWDufv6GDSUpJedVJ6uiIMRy3DGb06Pe9:jZTRdiXGD9pvujMR6DU
Static task
static1
Behavioral task
behavioral1
Sample
Bark-1.5.1.dll
Resource
win10-20240221-en
Malware Config
Extracted
C:\Users\Admin\Downloads\@[email protected]
wannacry
115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn
Targets
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Target
Bark-1.5.1.dll
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Size
6.5MB
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MD5
c5afebc4d9076df032ea86b096e25b41
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SHA1
fb724dfbdaff027b9c9d1ebbbba18377fd47df07
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SHA256
1c664b4e8c029d4bf45836f4636445177cc020c03d5fbbb2a35b27a2f5c860bb
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SHA512
0a1a9459ad2594024c294937499fc99d6930e5bc757a39874fcc484ef50086467dae698e0b9b67aaacbe091195dc7ad174dea5d6af9f13c82e29af0c167d54b3
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SSDEEP
196608:jDFT/qGdWDufv6GDSUpJedVJ6uiIMRy3DGb06Pe9:jZTRdiXGD9pvujMR6DU
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Downloads MZ/PE file
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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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Modifies system executable filetype association
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Registers COM server for autorun
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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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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Change Default File Association
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Change Default File Association
1