General
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Target
Client.exe
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Size
264KB
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Sample
240604-rw53hsad31
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MD5
612f4e90461be10c465ca2037cfae0fd
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SHA1
3f72719ef621781d53713cae90a68cc2967b69d2
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SHA256
e91028292e9f544999a641c8656895a4cfec809d5c9e28429e4233f5d5a894b7
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SHA512
76e8a376099ed58daabb276d21f25bba49e322f23dcb3c9fe1efe28b1dfcae88c7af13fe0e34999f29f252a793ac48b67ef23901d0935c9ce34701e68cce2fd5
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SSDEEP
3072:T+C7mnudxFQjk4KYF0Nt8NeN3w/jhlhE1Z8Nig9Out+00pRF5VXbbkhdtfjuSI5:6AmnYQr0Ye6VlWT8b99800VbQdVu
Static task
static1
Behavioral task
behavioral1
Sample
Client.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
Client.exe
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Size
264KB
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MD5
612f4e90461be10c465ca2037cfae0fd
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SHA1
3f72719ef621781d53713cae90a68cc2967b69d2
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SHA256
e91028292e9f544999a641c8656895a4cfec809d5c9e28429e4233f5d5a894b7
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SHA512
76e8a376099ed58daabb276d21f25bba49e322f23dcb3c9fe1efe28b1dfcae88c7af13fe0e34999f29f252a793ac48b67ef23901d0935c9ce34701e68cce2fd5
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SSDEEP
3072:T+C7mnudxFQjk4KYF0Nt8NeN3w/jhlhE1Z8Nig9Out+00pRF5VXbbkhdtfjuSI5:6AmnYQr0Ye6VlWT8b99800VbQdVu
Score10/10-
Modifies WinLogon for persistence
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Modifies AppInit DLL entries
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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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Adds Run key to start application
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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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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1