General
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Target
file.exe
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Size
257KB
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Sample
231119-se1l5sbd3w
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MD5
8236b680d9c9e22e2888f06630f1605f
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SHA1
16d395b61b578c49bbc94daa6e57e78394af20ea
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SHA256
5edd21bf37afaa60ad092deb91977372ad05a64e9f3de9857641696c2e97cac0
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SHA512
c97835b3f118c78b23917affc922b3e8c725e62fadefc848dae228d13cb46b09d2e6c03945369bf44852ddd210fa7cd769918bf15b0256a447c31dbb1419208a
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SSDEEP
3072:uP0wZ4/vqpVJ+XYYnyeA6wvQMWcGLG4SEVjXRBX7ovb1Yj:EoGYXYYnyeA7IMWcGLFV7LM
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231023-en
Malware Config
Extracted
tofsee
vanaheim.cn
jotunheim.name
Targets
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Target
file.exe
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Size
257KB
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MD5
8236b680d9c9e22e2888f06630f1605f
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SHA1
16d395b61b578c49bbc94daa6e57e78394af20ea
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SHA256
5edd21bf37afaa60ad092deb91977372ad05a64e9f3de9857641696c2e97cac0
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SHA512
c97835b3f118c78b23917affc922b3e8c725e62fadefc848dae228d13cb46b09d2e6c03945369bf44852ddd210fa7cd769918bf15b0256a447c31dbb1419208a
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SSDEEP
3072:uP0wZ4/vqpVJ+XYYnyeA6wvQMWcGLG4SEVjXRBX7ovb1Yj:EoGYXYYnyeA7IMWcGLFV7LM
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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