Analysis
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max time kernel
140s -
max time network
35s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
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submitted
25/03/2023, 23:40
General
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Target
bios.rar
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Size
37.9MB
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MD5
5c25a24fcdb7942791cf9741c790dbff
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SHA1
0311b9640f33ecf038b7536193f6ae2e7ae9ec6a
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SHA256
8da455738971a9c0abe1edc19cc7eb509d3123fc55424522379b815979e2bcd7
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SHA512
74120751855fc1cb154e62293aba1e35bc2058b841cc684114c4ab81980d60c014c5fe81a70870e38b2d24df4456a4ee7af4920286d5b24c505e35cc1dafbb4a
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SSDEEP
786432:IVmzEzJodGoT4ZMm4odGcT4ZMm54dGmT4ZMm2l72T4ZMmmT4ZMmNl734dGVVy:iRz6dGoUZvldGcUZvadGmUZv2IUZvmU+
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of FindShellTrayWindow 9 IoCs
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Suspicious use of SendNotifyMessage 8 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\bios.rar1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\bios.rar2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Program Files\VideoLAN\VLC\vlc.exe"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\bios.rar"3⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
992KB
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Filesize
208KB
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Filesize
2.7MB
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Filesize
96KB
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Filesize
92KB
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Filesize
68KB
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Filesize
92KB
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Filesize
68KB
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Filesize
116KB
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Filesize
68KB
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Filesize
16.7MB
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Filesize
2.0MB
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Filesize
252KB
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Filesize
132KB
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Filesize
96KB
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Filesize
68KB
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Filesize
68KB
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Filesize
68KB
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Filesize
108KB
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Filesize
68KB
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Filesize
96KB
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Filesize
192KB
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Filesize
412KB
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Filesize
444KB
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Filesize
68KB
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Filesize
344KB
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Filesize
160KB
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Filesize
144KB
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Filesize
92KB
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Filesize
140KB
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Filesize
68KB
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Filesize
72KB
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Filesize
132KB
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Filesize
76KB
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Filesize
72KB
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Filesize
1.2MB
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Filesize
176KB
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Filesize
1.7MB
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Filesize
368KB
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Filesize
68KB
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Filesize
604KB
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Filesize
72KB
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Filesize
2.2MB
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Filesize
1.1MB
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Filesize
212KB
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Filesize
68KB
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Filesize
388KB
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Filesize
148KB
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Filesize
68KB
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Filesize
72KB
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Filesize
76KB
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Filesize
636KB
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Filesize
68KB
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Filesize
1.0MB
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Filesize
68KB
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Filesize
68KB
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Filesize
68KB
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Filesize
72KB
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Filesize
96KB
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Filesize
88KB
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Filesize
164KB
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Filesize
72KB
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Filesize
68KB
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Filesize
68KB