General
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Target
file.exe
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Size
200KB
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Sample
231120-gcvsbseg8x
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MD5
265a630d864756fbb82d815a9dbcdce3
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SHA1
27f5b008b3888f41288d5e0ac52c257f281ae19f
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SHA256
d30d636013a05ce0194abdd49b743ff1aa30837ae6d3f82796ca73395a3ee578
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SHA512
b306131753b16d28bb5471d5beff3090cff3ec8e7aa122746653a7715ac40e0c706fe7706c7dc6db09b7aaaa0f45d5988a454f04e4245f708af9691653999437
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SSDEEP
3072:AR+b2wAmN64IOvAdjW6g/eNmJiSBpphw9UMIFgTOqZ1XvKs:Z2pq64IsQqR/TJfphvvyb
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231020-en
Malware Config
Extracted
tofsee
vanaheim.cn
jotunheim.name
Targets
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Target
file.exe
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Size
200KB
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MD5
265a630d864756fbb82d815a9dbcdce3
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SHA1
27f5b008b3888f41288d5e0ac52c257f281ae19f
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SHA256
d30d636013a05ce0194abdd49b743ff1aa30837ae6d3f82796ca73395a3ee578
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SHA512
b306131753b16d28bb5471d5beff3090cff3ec8e7aa122746653a7715ac40e0c706fe7706c7dc6db09b7aaaa0f45d5988a454f04e4245f708af9691653999437
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SSDEEP
3072:AR+b2wAmN64IOvAdjW6g/eNmJiSBpphw9UMIFgTOqZ1XvKs:Z2pq64IsQqR/TJfphvvyb
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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