Analysis
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max time kernel
140s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
09-06-2024 12:33
Behavioral task
behavioral1
Sample
nyxia external.exe
Resource
win7-20240508-en
7 signatures
150 seconds
General
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Target
nyxia external.exe
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Size
3.3MB
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MD5
51393a0442f9c01f59a597b1218887c8
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SHA1
2b48afc21ab4a30dd6b8ce4d8907c9062fb4d95c
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SHA256
19bddef132af20da74c89fb263b1ae89f9762eba06382e69cccdfc9048e45917
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SHA512
f492083b0b3cb86b4367da9fd7040b49de9d9643fef7f61b77815f761b0bec9eae3a61fdebe549ff1f9cf97c8b53cd7f7c44df4501f9a0f9baca87b502ac9de2
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SSDEEP
49152:ZPk827hGqT5yCL8FBo+IvuxVDK5rdynF4hNhLus6E9ku/8vpsS2vaovBlZ58aotR:Z88ypGOV0sPuvpsSIaM50tZjlBtB4I
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
nyxia external.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ nyxia external.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
nyxia external.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion nyxia external.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion nyxia external.exe -
Processes:
resource yara_rule behavioral1/memory/2976-0-0x000000013F990000-0x0000000140291000-memory.dmp themida behavioral1/memory/2976-2-0x000000013F990000-0x0000000140291000-memory.dmp themida behavioral1/memory/2976-3-0x000000013F990000-0x0000000140291000-memory.dmp themida behavioral1/memory/2976-4-0x000000013F990000-0x0000000140291000-memory.dmp themida behavioral1/memory/2976-5-0x000000013F990000-0x0000000140291000-memory.dmp themida behavioral1/memory/2976-6-0x000000013F990000-0x0000000140291000-memory.dmp themida -
Processes:
nyxia external.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA nyxia external.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
nyxia external.exepid process 2976 nyxia external.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
nyxia external.exepid process 2976 nyxia external.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
nyxia external.exedescription pid process target process PID 2976 wrote to memory of 1920 2976 nyxia external.exe WerFault.exe PID 2976 wrote to memory of 1920 2976 nyxia external.exe WerFault.exe PID 2976 wrote to memory of 1920 2976 nyxia external.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\nyxia external.exe"C:\Users\Admin\AppData\Local\Temp\nyxia external.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 WriteProcessMemory
PID:2976 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2976 -s 1962⤵PID:1920