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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
22/12/2023, 13:38
Behavioral task
behavioral1
Sample
a8665d0ba00b860befbf28d3e5e670d5.exe
Resource
win7-20231215-en
12 signatures
150 seconds
General
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Target
a8665d0ba00b860befbf28d3e5e670d5.exe
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Size
3.6MB
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MD5
a8665d0ba00b860befbf28d3e5e670d5
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SHA1
8f5f4ef8ee3408f6216d7abf731911ac7f363f40
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SHA256
5b163534033ed61d09c3eba2b2743d8869729a5a566640c1d10f18809f09e643
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SHA512
3006f4badede6be27b37d857ed33a281b75d159553d50b44e4a1c82fb8bf7c86a1f0e5e406b5750354c48b1facefc02fb8c2701dbcc0daefc373b5806b1c44f6
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SSDEEP
49152:BslvbszilY8dy0WFltM4fR44Mz5zJJqBivmfM+h2Xd/ACygCZk6QAM:2FxgrBKfz5WZh2HRak1
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__ a8665d0ba00b860befbf28d3e5e670d5.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\VideoBiosVersion a8665d0ba00b860befbf28d3e5e670d5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion a8665d0ba00b860befbf28d3e5e670d5.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\exe.lnk a8665d0ba00b860befbf28d3e5e670d5.exe -
resource yara_rule behavioral2/memory/3844-0-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-1-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-4-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-3-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-5-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-6-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida behavioral2/memory/3844-20-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a8665d0ba00b860befbf28d3e5e670d5.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 3844 a8665d0ba00b860befbf28d3e5e670d5.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe 3844 a8665d0ba00b860befbf28d3e5e670d5.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a8665d0ba00b860befbf28d3e5e670d5.exe"C:\Users\Admin\AppData\Local\Temp\a8665d0ba00b860befbf28d3e5e670d5.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Drops startup file
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3844