General
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Target
BrentFisherUSTax.pdf.lnk
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Size
2KB
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Sample
230301-1qjrrsac85
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MD5
cfb0a94f960a8e52c4017da1d4d12bff
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SHA1
33a3045df1a8306c1e46b0f5b6ad40d4547f6045
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SHA256
562ec1673c90fd1932f60b0f4e26e02a059347b88aa2d8fc0bddd058427d6946
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SHA512
4f298a350ec57fb26b810d39fbee95f26b769b7fe51c41b00d8fcd7adc661d3af1961d26bbeb2a3522df085254ca5826af1554cbe2ce8ecf3555dab6687d0c99
Static task
static1
Behavioral task
behavioral1
Sample
BrentFisherUSTax.pdf.lnk
Resource
win10v2004-20230220-en
Malware Config
Targets
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Target
BrentFisherUSTax.pdf.lnk
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Size
2KB
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MD5
cfb0a94f960a8e52c4017da1d4d12bff
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SHA1
33a3045df1a8306c1e46b0f5b6ad40d4547f6045
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SHA256
562ec1673c90fd1932f60b0f4e26e02a059347b88aa2d8fc0bddd058427d6946
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SHA512
4f298a350ec57fb26b810d39fbee95f26b769b7fe51c41b00d8fcd7adc661d3af1961d26bbeb2a3522df085254ca5826af1554cbe2ce8ecf3555dab6687d0c99
Score10/10-
Blocklisted process makes network request
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Checks QEMU agent file
Checks presence of QEMU agent, possibly to detect virtualization.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Adds Run key to start application
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Drops file in System32 directory
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Suspicious use of NtCreateThreadExHideFromDebugger
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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