General
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Target
81faa857e0e440955735ed78a8c61ddd.exe
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Size
4.3MB
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Sample
241228-kesyasxnam
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MD5
81faa857e0e440955735ed78a8c61ddd
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SHA1
c13ce342d65ff323711b7a8829bcc3f94a3cfe56
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SHA256
0db9a16d15b04d332d6f96fea01b0c31662105d3097f340ed124c7357a964072
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SHA512
3daacf7ea9b6160568f0d285898c56921f588a226e5055b803c74533218bde2b9f102facba3e6fd2d47241b9b5edcdb11e2df29daa7307503092c7be161362c9
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SSDEEP
98304:j6o0e+zdDWFs1wNzJH9K5/ig4mCRqItKHT64yFyeYm5t7g/Htn:j6o0e+z84wVJHs5/x41cW4yEeP5ta
Static task
static1
Behavioral task
behavioral1
Sample
81faa857e0e440955735ed78a8c61ddd.exe
Resource
win7-20240708-en
Malware Config
Extracted
cryptbot
Targets
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Target
81faa857e0e440955735ed78a8c61ddd.exe
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Size
4.3MB
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MD5
81faa857e0e440955735ed78a8c61ddd
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SHA1
c13ce342d65ff323711b7a8829bcc3f94a3cfe56
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SHA256
0db9a16d15b04d332d6f96fea01b0c31662105d3097f340ed124c7357a964072
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SHA512
3daacf7ea9b6160568f0d285898c56921f588a226e5055b803c74533218bde2b9f102facba3e6fd2d47241b9b5edcdb11e2df29daa7307503092c7be161362c9
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SSDEEP
98304:j6o0e+zdDWFs1wNzJH9K5/ig4mCRqItKHT64yFyeYm5t7g/Htn:j6o0e+z84wVJHs5/x41cW4yEeP5ta
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Cryptbot family
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Enumerates VirtualBox registry keys
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of NtSetInformationThreadHideFromDebugger
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