General
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Target
file.exe
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Size
227KB
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Sample
230917-vgs17abe2w
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MD5
968d7b91a331234c30946bf3b6834e85
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SHA1
b8fd455add6140b20fbb1244d9cd33a7cec9f85b
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SHA256
c5fc6da4ebc5e3685e3b4d162d52a0688edfd1dae0d202a921b470cb7dd08cf9
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SHA512
e5b0987e099c8735da2ca5b5d7913735f0923bce8226937466fa967babf25e4a71537fea81e354b95fa08e260c401042177abea6e323a1016e306e49c9ae0629
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SSDEEP
3072:WEL7fZAMg8P9yo8ZGkAlhk/V3yDBzAlz:pfmMg5o8ZuKiDRA
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.exe
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Size
227KB
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MD5
968d7b91a331234c30946bf3b6834e85
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SHA1
b8fd455add6140b20fbb1244d9cd33a7cec9f85b
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SHA256
c5fc6da4ebc5e3685e3b4d162d52a0688edfd1dae0d202a921b470cb7dd08cf9
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SHA512
e5b0987e099c8735da2ca5b5d7913735f0923bce8226937466fa967babf25e4a71537fea81e354b95fa08e260c401042177abea6e323a1016e306e49c9ae0629
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SSDEEP
3072:WEL7fZAMg8P9yo8ZGkAlhk/V3yDBzAlz:pfmMg5o8ZuKiDRA
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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