General
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Target
tmp
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Size
1.8MB
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Sample
230304-tj9laaed46
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MD5
1237a749cdfe8065f70beb76026fbf58
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SHA1
9e9febe7441cfaa52135c32ef1827af10bdc81bf
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SHA256
819d812044fccc25692d6f0919850536d3486bdfdf296bea08ea3291fe1d425c
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SHA512
57217329975517c09c32c49be0da9c694a7492347c13024eef77203ee16d3caaba8e77235a991194bcab961071d7ff887a1e5501eafc234f52ee4f840d3e6166
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SSDEEP
49152:zGXOVDKuXtwIarveK9plB91K70myaigDmXI:ieVDx6IaaK9plBXO03xgDmXI
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230221-en
Malware Config
Extracted
asyncrat
0.5.7B
Aakn1515knAakn1515kn
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delay
3
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install
false
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install_folder
%AppData%
Extracted
smokeloader
2022
Targets
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Target
tmp
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Size
1.8MB
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MD5
1237a749cdfe8065f70beb76026fbf58
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SHA1
9e9febe7441cfaa52135c32ef1827af10bdc81bf
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SHA256
819d812044fccc25692d6f0919850536d3486bdfdf296bea08ea3291fe1d425c
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SHA512
57217329975517c09c32c49be0da9c694a7492347c13024eef77203ee16d3caaba8e77235a991194bcab961071d7ff887a1e5501eafc234f52ee4f840d3e6166
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SSDEEP
49152:zGXOVDKuXtwIarveK9plB91K70myaigDmXI:ieVDx6IaaK9plBXO03xgDmXI
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Detect PureCrypter injector
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Detects Smokeloader packer
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Modifies WinLogon for persistence
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Async RAT payload
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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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Loads dropped DLL
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Suspicious use of SetThreadContext
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