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General
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Target
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a_JC.exe
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Size
234KB
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Sample
231001-yh2aqsee35
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MD5
3e54bc559813b3b887de44604644a083
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SHA1
6af11930891b523991ee1115c15e9d72b46f3a28
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SHA256
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a
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SHA512
38a25887bf7ef217dc4ab88a734fdb41a46bc675cde1fe3a7217810754f6bd9be1410c6c2df5bb7d70ff38df20cc828c89fe1d66f0d906e1f37be07760147133
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SSDEEP
3072:HDER0MfinkOKUtMSdWxLZ9dUMglZlwrrKST4S5/RFleRATO34:EfQZdWjXUhZ6ZvR0ATV
Static task
static1
Behavioral task
behavioral1
Sample
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a_JC.exe
Resource
win10v2004-20230915-en
Malware Config
Extracted
tofsee
vanaheim.cn
jotunheim.name
Targets
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Target
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a_JC.exe
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Size
234KB
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MD5
3e54bc559813b3b887de44604644a083
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SHA1
6af11930891b523991ee1115c15e9d72b46f3a28
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SHA256
38eca8e8f88a15c11fdfeadf43c454386d27f479eb1235ae4ddaf3958624ba0a
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SHA512
38a25887bf7ef217dc4ab88a734fdb41a46bc675cde1fe3a7217810754f6bd9be1410c6c2df5bb7d70ff38df20cc828c89fe1d66f0d906e1f37be07760147133
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SSDEEP
3072:HDER0MfinkOKUtMSdWxLZ9dUMglZlwrrKST4S5/RFleRATO34:EfQZdWjXUhZ6ZvR0ATV
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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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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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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