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General
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Target
free+fn.exe
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Size
1.7MB
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Sample
240801-zjensszgpe
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MD5
21d0503591599d833536e4d1bb7cb352
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SHA1
9664ffc0a92896b89911c35d73cab84605ab3b8b
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SHA256
cc9a7ddcb53c96c1b2acb8a77f0259319cc51f3405e8b00036bddc612ee56db6
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SHA512
2ea754b0eca571ce0536651b8d7127d35a8079006773af892b5ceb985be67710bc8297d426779cc7b4c26c4e35ae0eb8542e16da97a2b9f3178bbb291bef8848
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SSDEEP
24576:BI5g2vzFqkz5PTCtzRGhLArFVlebI+Jnmb2+ocKrREOKSS2u2Kr:e/NLOXfond+ocwEfXD
Static task
static1
Behavioral task
behavioral1
Sample
free+fn.exe
Resource
win7-20240729-en
Malware Config
Targets
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Target
free+fn.exe
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Size
1.7MB
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MD5
21d0503591599d833536e4d1bb7cb352
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SHA1
9664ffc0a92896b89911c35d73cab84605ab3b8b
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SHA256
cc9a7ddcb53c96c1b2acb8a77f0259319cc51f3405e8b00036bddc612ee56db6
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SHA512
2ea754b0eca571ce0536651b8d7127d35a8079006773af892b5ceb985be67710bc8297d426779cc7b4c26c4e35ae0eb8542e16da97a2b9f3178bbb291bef8848
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SSDEEP
24576:BI5g2vzFqkz5PTCtzRGhLArFVlebI+Jnmb2+ocKrREOKSS2u2Kr:e/NLOXfond+ocwEfXD
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Looks for VirtualBox Guest Additions in registry
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Blocklisted process makes network request
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Modifies file permissions
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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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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Defense Evasion
File and Directory Permissions Modification
1Virtualization/Sandbox Evasion
2