General
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Target
CUSTOM FORM E.xls
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Size
1.0MB
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Sample
230302-nnapvscd2s
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MD5
d221ce0d91ef94f55dff3560fe260c45
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SHA1
a5fef0be95fafd95a8e95742e10de6e34c52420d
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SHA256
367f43f9444ce24cad2611f59e61608566a772fe098d081e20349440010681d7
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SHA512
d543a590a5150de7c539ef264017f018c5f0d1c9ae14ce21ec7fc1d260962553beea3186f1856eec5af0be9b5300a4a060cf3c459a4bbff95fc59531057a5ec1
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SSDEEP
24576:1LKswByWQmmav30xImiIBJRWQmmav30xBmD9cf9gX1zb1slqxke8:1LKhtQmmQ30AIzgQmmQ30k9Rcq4
Static task
static1
Behavioral task
behavioral1
Sample
CUSTOM FORM E.xls
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
CUSTOM FORM E.xls
Resource
win10v2004-20230220-en
Malware Config
Extracted
purecrypter
http://192.3.26.135/uo/Ksagb.png
Extracted
snakekeylogger
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
doDHyw%0 - Email To:
[email protected]
Targets
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Target
CUSTOM FORM E.xls
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Size
1.0MB
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MD5
d221ce0d91ef94f55dff3560fe260c45
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SHA1
a5fef0be95fafd95a8e95742e10de6e34c52420d
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SHA256
367f43f9444ce24cad2611f59e61608566a772fe098d081e20349440010681d7
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SHA512
d543a590a5150de7c539ef264017f018c5f0d1c9ae14ce21ec7fc1d260962553beea3186f1856eec5af0be9b5300a4a060cf3c459a4bbff95fc59531057a5ec1
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SSDEEP
24576:1LKswByWQmmav30xImiIBJRWQmmav30xBmD9cf9gX1zb1slqxke8:1LKhtQmmQ30AIzgQmmQ30k9Rcq4
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Snake Keylogger 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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Loads dropped DLL
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Uses the VBS compiler for execution
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Accesses Microsoft Outlook profiles
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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