Analysis
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max time kernel
149s -
max time network
153s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
28-04-2024 18:27
Static task
static1
Behavioral task
behavioral1
Sample
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe
Resource
win10v2004-20240226-en
General
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Target
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe
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Size
1.8MB
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MD5
93338c2f6145798dfafcee30c199e20f
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SHA1
5b7d99b4c1d83ff9ee31bc4c548c32b80f976597
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SHA256
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787
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SHA512
b9596186abd820f85c2e72a6354bea9ab323ed75f4bfd7a815e8afebc5e25611e246948d7ed22bac934a114c9a309defeff149747751195ca98db24846e735cf
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SSDEEP
49152:JaDmc7gRoXqaNbUcoqFGax4koKkekln1FP3j4gV:JdXRoXqU4vax4kogkVbzBV
Malware Config
Extracted
amadey
4.17
http://193.233.132.167
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install_dir
4d0ab15804
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install_file
chrosha.exe
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strings_key
1a9519d7b465e1f4880fa09a6162d768
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url_paths
/enigma/index.php
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
Processes:
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exechrosha.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exechrosha.exedescription ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe -
Executes dropped EXE 1 IoCs
Processes:
chrosha.exepid Process 1396 chrosha.exe -
Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
Processes:
chrosha.exe951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Wine chrosha.exe Key opened \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Wine 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exechrosha.exepid Process 4792 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe 1396 chrosha.exe -
Drops file in Windows directory 1 IoCs
Processes:
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exedescription ioc Process File created C:\Windows\Tasks\chrosha.job 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exechrosha.exepid Process 4792 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe 4792 951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe 1396 chrosha.exe 1396 chrosha.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe"C:\Users\Admin\AppData\Local\Temp\951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4792
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C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exeC:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1396
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.8MB
MD593338c2f6145798dfafcee30c199e20f
SHA15b7d99b4c1d83ff9ee31bc4c548c32b80f976597
SHA256951d9f6c539b26b74dbf17033a7a6d62edd2cd6af7fbd79da023bcdf30770787
SHA512b9596186abd820f85c2e72a6354bea9ab323ed75f4bfd7a815e8afebc5e25611e246948d7ed22bac934a114c9a309defeff149747751195ca98db24846e735cf