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Analysis
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max time kernel
141s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
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submitted
13/07/2024, 09:42
General
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Target
croyytnb.ef1.exe
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Size
5.0MB
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MD5
5524daa07608a93528994d9a870e82fe
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SHA1
4d388c0ccecbba0e53406f147845da0cdcf17254
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SHA256
2b9eb3238b831e83d2579452bc6e45915de682b8e079632afab63be441ccb89a
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SHA512
d9d8379bf2398cd128ced2bcf66441c88068012d49e4a893489dbe2ace5110f456cd57df294ce68fbe9663f1bd555d88a21ac54b402e4c78cb89256a07bf6da5
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SSDEEP
98304:rFfo66T0/ojCtEfD19WnQNIKg3FfRJrR44LjTg+2in/HTcwPDlty+aZ80h:pfojTmo2UsAIDfRDdWin/HIkl70h
Score
9/10
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
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Checks BIOS information in registry 2 TTPs 3 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Checks whether UAC is enabled 1 TTPs 1 IoCs
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\croyytnb.ef1.exe"C:\Users\Admin\AppData\Local\Temp\croyytnb.ef1.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
11.8MB
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Filesize
8KB
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Filesize
11.8MB
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Filesize
11.8MB
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Filesize
11.8MB
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Filesize
11.8MB
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Filesize
11.8MB
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Filesize
11.8MB
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Filesize
11.8MB