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General
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Target
file
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Size
214KB
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Sample
230919-3epjzsce6w
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MD5
853a0ef89b1532e80c7e14d14cbf0073
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SHA1
8d83ff39485dab7df49d527cca9bfc53938597e8
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SHA256
a34e57fcf36648d26b35a8e3e43d4c523bd07216bda22c2a283c4a6a22e7d070
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SHA512
b1eb21f26a6c7857356b7b8578cfbc0bdb1bb9a3ae6d0c7b9d0968e9bce4c06544124f03f4cbcd7e975be6f8237cdd10f22c12fecaddfbd8854c687503839c9d
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SSDEEP
3072:+AXMadk9mLIqG7/IovYa4EVFW5hgWAErvf+XSLwVtxjpkwnwxLB5bSDT0K:TMaO9mL07/IrMF1WFVLwlZwdnSDT
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230915-en
Malware Config
Extracted
tofsee
vanaheim.cn
jotunheim.name
Targets
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Target
file
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Size
214KB
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MD5
853a0ef89b1532e80c7e14d14cbf0073
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SHA1
8d83ff39485dab7df49d527cca9bfc53938597e8
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SHA256
a34e57fcf36648d26b35a8e3e43d4c523bd07216bda22c2a283c4a6a22e7d070
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SHA512
b1eb21f26a6c7857356b7b8578cfbc0bdb1bb9a3ae6d0c7b9d0968e9bce4c06544124f03f4cbcd7e975be6f8237cdd10f22c12fecaddfbd8854c687503839c9d
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SSDEEP
3072:+AXMadk9mLIqG7/IovYa4EVFW5hgWAErvf+XSLwVtxjpkwnwxLB5bSDT0K:TMaO9mL07/IrMF1WFVLwlZwdnSDT
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XMRig Miner payload
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Creates new service(s)
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Modifies Windows Firewall
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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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Deletes itself
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Executes dropped EXE
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2