Analysis
- max time kernel
8s - max time network
164s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
03/01/2024, 06:26
Static task
static1
Behavioral task
behavioral1
Sample
ama.exe
Resource
win7-20231215-en
17 signatures
150 seconds
General
- Target ama.exe
- Size 4.2MB
- Sample240103-g67c8acbak
- SHA256 7067efc25c133206570865eb8e8063d59894e5a3c457e287ca050d6fc3d182d4
- MD5 85063be1269280d47cd7a92ac929e8d7
- SHA1 263410e5468c34b22002ddd6c38c0edec54c5130
- SHA512 68f3a7be4d89fb4a2d09163c5d90f60c9036b3329f9ae5a718a17611b8105eee35d87b4ed598a44d1933f761952eaf60ea3f9c85f8da0cf4ed42ffc0653c69db
- SSDEEP 98304:aXQL86ZtG2fZyxobYPe9qVg8xhctOiJbA/N5NOL9L+xBgq:aXCU2fZWCYPe9uhg8iG2R
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
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amadey
Version
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4.13
C2
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http://185.172.128.5
Attributes
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install_dir
4fdb51ccdc
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install_file
Utsysc.exe
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strings_key
11bb398ff31ee80d2c37571aecd1d36d
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url_paths
/v8sjh3hs8/index.php
rc4.plain
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ama.exe - Downloads MZ/PE file
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ama.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ama.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ama.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2980 ama.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4272 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2980 ama.exe 2980 ama.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2980 ama.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ama.exe"C:\Users\Admin\AppData\Local\Temp\ama.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:2980 -
C:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exe"C:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exe"2⤵PID:1960
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN Utsysc.exe /TR "C:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exe" /F3⤵
- Creates scheduled task(s)
PID:4272
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\80c6bf70bf3f8f\cred64.dll, Main3⤵PID:2516
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C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\80c6bf70bf3f8f\cred64.dll, Main4⤵PID:4056
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C:\Windows\system32\netsh.exenetsh wlan show profiles5⤵PID:4708
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\815711207184_Desktop.zip' -CompressionLevel Optimal5⤵PID:3668
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\80c6bf70bf3f8f\clip64.dll, Main3⤵PID:1644
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C:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exe1⤵PID:548
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C:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\4fdb51ccdc\Utsysc.exe1⤵PID:4308