General
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Target
BstNiggaStub.exe
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Size
1017KB
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Sample
220407-fx5btsbhf2
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MD5
6a63a4741f5d8561a08069dab3c9afbc
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SHA1
4cceb4ccf7a1d488bc7a4b67ced920c7fcbec8a2
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SHA256
5536d8e31ee96b4cdfbd1a1b485cb13960f01ddf218ee8d17f42f5f02b41d68e
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SHA512
1afc1ec86a900827257b7fff7f2a598a0b35ef3f489a7ea11fe0d6a130335550ac6032a18e2c425429e06aae52ed89c84697ac9d12b3080cc2ee9b95b9ca9dab
Static task
static1
Behavioral task
behavioral1
Sample
BstNiggaStub.exe
Resource
win7-20220331-en
Behavioral task
behavioral2
Sample
BstNiggaStub.exe
Resource
win10v2004-20220331-en
Malware Config
Targets
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Target
BstNiggaStub.exe
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Size
1017KB
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MD5
6a63a4741f5d8561a08069dab3c9afbc
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SHA1
4cceb4ccf7a1d488bc7a4b67ced920c7fcbec8a2
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SHA256
5536d8e31ee96b4cdfbd1a1b485cb13960f01ddf218ee8d17f42f5f02b41d68e
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SHA512
1afc1ec86a900827257b7fff7f2a598a0b35ef3f489a7ea11fe0d6a130335550ac6032a18e2c425429e06aae52ed89c84697ac9d12b3080cc2ee9b95b9ca9dab
Score8/10-
Executes dropped EXE
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Loads dropped DLL
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Legitimate hosting services abused for malware hosting/C2
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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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Suspicious use of SetThreadContext
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