General
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Target
ratbuildransomware.exe
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Size
23KB
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Sample
250126-m4l76a1kgm
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MD5
0a1c74e456d2f946369080f5a46b79c0
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SHA1
3a11cf17c826247034f12b63362ee597681a37ca
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SHA256
b6176e42f8eece315692fa7ec9a37190f1ec8353fc85a7b1042af4b06f1f489e
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SHA512
27133929dafc8c5abc954baa3491c603dbaa866155ebf32d25860ec0da879a024e6207767943bae36e2b8faaeac7f7a52d254b8f26e0bd17ef747c3c6d2db963
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SSDEEP
384:b3MLWHn3kIef/ZXRtLWW3pXHVYILpJrr91CzxbeteT:Hn3kIcpj3pXHVY0nrr9ixbYeT
Behavioral task
behavioral1
Sample
ratbuildransomware.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
ratbuildransomware.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Targets
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Target
ratbuildransomware.exe
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Size
23KB
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MD5
0a1c74e456d2f946369080f5a46b79c0
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SHA1
3a11cf17c826247034f12b63362ee597681a37ca
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SHA256
b6176e42f8eece315692fa7ec9a37190f1ec8353fc85a7b1042af4b06f1f489e
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SHA512
27133929dafc8c5abc954baa3491c603dbaa866155ebf32d25860ec0da879a024e6207767943bae36e2b8faaeac7f7a52d254b8f26e0bd17ef747c3c6d2db963
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SSDEEP
384:b3MLWHn3kIef/ZXRtLWW3pXHVYILpJrr91CzxbeteT:Hn3kIcpj3pXHVY0nrr9ixbYeT
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Chaos Ransomware
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Chaos family
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit
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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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Drops desktop.ini file(s)
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