Analysis
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max time kernel
150s -
max time network
132s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
02-06-2024 11:52
Behavioral task
behavioral1
Sample
loader.exe
Resource
win7-20240508-en
windows7-x64
8 signatures
150 seconds
General
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Target
loader.exe
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Size
4.1MB
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MD5
9ecdc9ed1bea6c226f92d740d43400b9
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SHA1
b5b5066cd4284733d8c3f3d7de3ca6653091ae10
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SHA256
60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c
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SHA512
30bc705a2438288e3647d5adfc6119d751823970972b9c6b39a60384a2b7ac261986026b8d1c0b0ca7ee3d7e95363c97b873fdc5fad4096c903cb4e15bf57e43
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SSDEEP
98304:vnUGAC+hqc8lqvdzw2nsNKYYURyc9JirsN4JzmUPj:PTn2qcUzp6UYeJRCxPj
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ loader.exe -
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 loader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion loader.exe -
resource yara_rule behavioral2/memory/5068-0-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-3-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-4-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-2-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-5-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-7-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-8-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-6-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-9-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida behavioral2/memory/5068-13-0x00007FF782820000-0x00007FF7832BF000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA loader.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 5068 loader.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 5068 loader.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 5068 loader.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 5068 wrote to memory of 4420 5068 loader.exe 74 PID 5068 wrote to memory of 4420 5068 loader.exe 74 PID 4420 wrote to memory of 5016 4420 cmd.exe 76 PID 4420 wrote to memory of 5016 4420 cmd.exe 76 PID 4420 wrote to memory of 5012 4420 cmd.exe 77 PID 4420 wrote to memory of 5012 4420 cmd.exe 77 PID 4420 wrote to memory of 424 4420 cmd.exe 78 PID 4420 wrote to memory of 424 4420 cmd.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\loader.exe"C:\Users\Admin\AppData\Local\Temp\loader.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: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5068 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"2⤵
- Suspicious use of WriteProcessMemory
PID:4420 -
C:\Windows\system32\certutil.execertutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD53⤵PID:5016
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C:\Windows\system32\find.exefind /i /v "md5"3⤵PID:5012
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C:\Windows\system32\find.exefind /i /v "certutil"3⤵PID:424
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