General
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Target
Rebuffed.exe
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Size
1.2MB
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Sample
231012-h4e2madd7w
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MD5
4f56cd3f66574df8c5d4969a7a731832
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SHA1
790d9b9d9dd45ae834139158a993721ab74ac3f4
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SHA256
15c55fd5158febe95f1e54f73a9388e77b1974d6983d6fad4c7dac8961ce71bb
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SHA512
fce4942401bd50931bc28e51f071764f7107c3094aa8dfe3125bed66f55f7361e2c7b6174fcdb6b68c6fb5ec3d47af4f2f3402619eb7e8768ed150812dd9a070
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SSDEEP
24576:2RYkWmWEPOh5Wr++qiOKpTnDeSsp1jQW3GwiAtsp1kt4KdAZJO3FqdPH5oUPhZ:8YoW3WrtsKpTYpyW3GwY6tMqOz3
Static task
static1
Behavioral task
behavioral1
Sample
Rebuffed.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Rebuffed.exe
Resource
win10v2004-20230915-en
Malware Config
Targets
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Target
Rebuffed.exe
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Size
1.2MB
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MD5
4f56cd3f66574df8c5d4969a7a731832
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SHA1
790d9b9d9dd45ae834139158a993721ab74ac3f4
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SHA256
15c55fd5158febe95f1e54f73a9388e77b1974d6983d6fad4c7dac8961ce71bb
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SHA512
fce4942401bd50931bc28e51f071764f7107c3094aa8dfe3125bed66f55f7361e2c7b6174fcdb6b68c6fb5ec3d47af4f2f3402619eb7e8768ed150812dd9a070
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SSDEEP
24576:2RYkWmWEPOh5Wr++qiOKpTnDeSsp1jQW3GwiAtsp1kt4KdAZJO3FqdPH5oUPhZ:8YoW3WrtsKpTYpyW3GwY6tMqOz3
Score10/10-
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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Loads dropped DLL
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Legitimate hosting services abused for malware hosting/C2
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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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