Analysis
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max time kernel
110s -
max time network
100s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
30/10/2024, 14:35
Static task
static1
Behavioral task
behavioral1
Sample
a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe
Resource
win10v2004-20241007-en
General
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Target
a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe
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Size
58KB
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MD5
9ab82b2b727ff63da75a23ce811d3420
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SHA1
92a8a943e34fa186e18e0ace3c0aaf50c1718c03
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SHA256
a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59f
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SHA512
443908cfe6fb01593859707c87e5f62b2d9e63dbcb9330c5af46e577e9fe072ba173660b3c4601f9e4b6cf0c28c654c84c1cd55d44958f84484a39dd31edc24c
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SSDEEP
1536:hvQoLHjw2iWPKMvw71/RLyXwvvvZeee5Ltttt7:hv5Ls27BIJ/RLyXweeeRtttt7
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 904 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 2056 ayahost.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Debug\ayahost.exe a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe File opened for modification C:\Windows\Debug\ayahost.exe a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ayahost.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 ayahost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ayahost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 1776 a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1776 wrote to memory of 904 1776 a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe 31 PID 1776 wrote to memory of 904 1776 a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe 31 PID 1776 wrote to memory of 904 1776 a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe 31 PID 1776 wrote to memory of 904 1776 a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe"C:\Users\Admin\AppData\Local\Temp\a93edf36ef25a61c0a99b157304430622b69a0182ae853dab26ca2fdc14ee59fN.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A93EDF~1.EXE > nul2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:904
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C:\Windows\Debug\ayahost.exeC:\Windows\Debug\ayahost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2056
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD5a12d17bd768d5fc65020009c1ecc2551
SHA1920a51983e8c94ab6b61f0fc05ef35ee7b75f4b2
SHA256fb2343aea644efcc372f640d5a262995332e8712284a68263474d9ef45c07b97
SHA512228ad2b15e7fbc6eaf01a07958466c4248ad232313854355da09a21f59048311ed0ccd204ea2daf9b0fe1b03af188c8bc110ee1300e6c44956f16c37bdb9e5d8