General
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Target
Firefox-Setup.msi
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Size
6.1MB
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Sample
221228-gjhrcahe93
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MD5
d739d27f7b5f589efbd674b36a550f96
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SHA1
97408f933772312614f82cbaeedd8fcd1a136f04
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SHA256
31f15864c8e234405ce72067c73557dac90c8f38a0b396966210f807385590ab
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SHA512
0bd748085318b70280e50ee4db091ae24a301fc701a16f5963d7dbda8121eaa1cfba1fa0d3f6ac77873d7d668a8cd5601bd5cbc1aa250b6827440e273a59b516
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SSDEEP
98304:10Zn7K+AOFnWnnuxTBzZOqUDtOjYgvM2BgwmSSjnduYRFhEvBA6D4BAX1fPQ:1WxLVNZONm0fwXVY1Evic4BAX1fPQ
Static task
static1
Behavioral task
behavioral1
Sample
Firefox-Setup.msi
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Firefox-Setup.msi
Resource
win10v2004-20220812-en
Malware Config
Targets
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Target
Firefox-Setup.msi
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Size
6.1MB
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MD5
d739d27f7b5f589efbd674b36a550f96
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SHA1
97408f933772312614f82cbaeedd8fcd1a136f04
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SHA256
31f15864c8e234405ce72067c73557dac90c8f38a0b396966210f807385590ab
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SHA512
0bd748085318b70280e50ee4db091ae24a301fc701a16f5963d7dbda8121eaa1cfba1fa0d3f6ac77873d7d668a8cd5601bd5cbc1aa250b6827440e273a59b516
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SSDEEP
98304:10Zn7K+AOFnWnnuxTBzZOqUDtOjYgvM2BgwmSSjnduYRFhEvBA6D4BAX1fPQ:1WxLVNZONm0fwXVY1Evic4BAX1fPQ
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FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
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Fatal Rat payload
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Blocklisted process makes network request
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Downloads MZ/PE file
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Executes dropped EXE
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Registers COM server for autorun
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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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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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