General
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Target
Signal6.9.6.exe
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Size
114.5MB
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Sample
231020-l47y7aba53
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MD5
f6d697fd79c8510c929350efffa8543b
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SHA1
36f7477cb84c450847d6bf0cc9842228194bf56a
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SHA256
99ad30a4c3147042b2929585183736bc1135558c7efb2c5d6bc6c33d850ac301
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SHA512
5be24571406c2fc1c7dd3cfabba9e05a1276552dbc3d6fb1488c02c8daea0d46ee7b005f38b67eff67f0ee1c49f7c5fcae0cdc80d1c85a9f38ed81383e89d023
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SSDEEP
3145728:VtGIPHBudiuFrz8WWKRx4YcmyDqDkU2inxwMGZJ/w0EhPNn:VxQr1znWKRx4Bm7rxjG7wX
Behavioral task
behavioral1
Sample
Signal6.9.6.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Signal6.9.6.exe
Resource
win10-20230915-en
Behavioral task
behavioral3
Sample
Signal6.9.6.exe
Resource
win10v2004-20230915-en
Malware Config
Targets
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Target
Signal6.9.6.exe
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Size
114.5MB
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MD5
f6d697fd79c8510c929350efffa8543b
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SHA1
36f7477cb84c450847d6bf0cc9842228194bf56a
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SHA256
99ad30a4c3147042b2929585183736bc1135558c7efb2c5d6bc6c33d850ac301
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SHA512
5be24571406c2fc1c7dd3cfabba9e05a1276552dbc3d6fb1488c02c8daea0d46ee7b005f38b67eff67f0ee1c49f7c5fcae0cdc80d1c85a9f38ed81383e89d023
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SSDEEP
3145728:VtGIPHBudiuFrz8WWKRx4YcmyDqDkU2inxwMGZJ/w0EhPNn:VxQr1znWKRx4Bm7rxjG7wX
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FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
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Gh0st RAT payload
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Fatal Rat payload
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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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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Executes dropped EXE
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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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Loads dropped DLL
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Adds Run key to start application
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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