General
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Target
SynapseDowngrader.exe
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Size
600KB
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Sample
240829-xh927swcmf
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MD5
8c48b5f9d5efc74bfb95390ea23f2db7
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SHA1
76e3c2b597164b9009c65f421e87abfc3b3e412b
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SHA256
21829708b9a4864c95b5f388fb3e0e850c2f1e04e17f093e6e6bb7d7f383e913
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SHA512
de80367169c7862ec66505c84c42be1134c16c9c19a8f1344d6ed9dd1d7510fe993cc249b077c2e61c2f3cdd2555930eef50f44e287fb42ef11b00593229a28f
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SSDEEP
12288:Egby/bP2s/c9DO3LOBCjey8al5+mAIG+dGRqCW77UZh:Egby/bP2sIDULOBCjlvWI7GRk2
Static task
static1
Malware Config
Extracted
xworm
5.0
la-michael.gl.at.ply.gg:65463
641UIwoUJK0Mht9q
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Install_directory
%AppData%
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install_file
USB.exe
Targets
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Target
SynapseDowngrader.exe
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Size
600KB
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MD5
8c48b5f9d5efc74bfb95390ea23f2db7
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SHA1
76e3c2b597164b9009c65f421e87abfc3b3e412b
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SHA256
21829708b9a4864c95b5f388fb3e0e850c2f1e04e17f093e6e6bb7d7f383e913
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SHA512
de80367169c7862ec66505c84c42be1134c16c9c19a8f1344d6ed9dd1d7510fe993cc249b077c2e61c2f3cdd2555930eef50f44e287fb42ef11b00593229a28f
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SSDEEP
12288:Egby/bP2s/c9DO3LOBCjey8al5+mAIG+dGRqCW77UZh:Egby/bP2sIDULOBCjlvWI7GRk2
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Detect Xworm Payload
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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