Analysis
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max time kernel
141s -
max time network
93s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-05-2024 14:34
Behavioral task
behavioral1
Sample
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe
Resource
win10v2004-20240508-en
General
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Target
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe
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Size
1.7MB
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MD5
cdf8f9f30f7d9d67e53083d1c117d4b7
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SHA1
a11f45d3efec0c641c06f5551251fb830140eda6
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SHA256
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4
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SHA512
7a4a37c0e0566d52d841a86408cf806e97f09934d56bc6d9c47a76505643917aa4138a4d4af01dea36d0cb06120561b507ab9af14f8aab959e3a4b688b0052e0
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SSDEEP
49152:tB50i1Rv7p4u5hL/f36Gf20j0zrv1yPlfs8pVbXb2PRNTuPw9Hy:VDWuH//6GfdjMc1s8DXb25Nhy
Malware Config
Extracted
amadey
4.20
18befc
http://5.42.96.141
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install_dir
908f070dff
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install_file
explorku.exe
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strings_key
b25a9385246248a95c600f9a061438e1
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url_paths
/go34ko8/index.php
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 4 IoCs
Processes:
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe -
Checks BIOS information in registry 2 TTPs 8 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe -
Executes dropped EXE 3 IoCs
Processes:
explorku.exeexplorku.exeexplorku.exepid process 4840 explorku.exe 3156 explorku.exe 1660 explorku.exe -
Processes:
resource yara_rule behavioral2/memory/4340-0-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-2-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-1-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-3-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-7-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-5-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-4-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-6-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4340-8-0x0000000000250000-0x00000000007A2000-memory.dmp themida C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe themida behavioral2/memory/4840-24-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-29-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-28-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-26-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-27-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-22-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-25-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-23-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4340-21-0x0000000000250000-0x00000000007A2000-memory.dmp themida behavioral2/memory/4840-30-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/4840-31-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-37-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-40-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-38-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-44-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-45-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-43-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-39-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-42-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-41-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/3156-46-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-54-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-57-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-55-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-56-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-61-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-60-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-58-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-59-0x0000000000C70000-0x00000000011C2000-memory.dmp themida behavioral2/memory/1660-63-0x0000000000C70000-0x00000000011C2000-memory.dmp themida -
Processes:
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe -
Drops file in Windows directory 1 IoCs
Processes:
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exedescription ioc process File created C:\Windows\Tasks\explorku.job f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
Processes:
f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exedescription pid process target process PID 4340 wrote to memory of 4840 4340 f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe explorku.exe PID 4340 wrote to memory of 4840 4340 f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe explorku.exe PID 4340 wrote to memory of 4840 4340 f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe explorku.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe"C:\Users\Admin\AppData\Local\Temp\f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
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C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeC:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
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C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeC:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeFilesize
1.7MB
MD5cdf8f9f30f7d9d67e53083d1c117d4b7
SHA1a11f45d3efec0c641c06f5551251fb830140eda6
SHA256f35e9a57d2f134f03620019d86cb03e18651b73bb012ddbe522dbfe93ad847d4
SHA5127a4a37c0e0566d52d841a86408cf806e97f09934d56bc6d9c47a76505643917aa4138a4d4af01dea36d0cb06120561b507ab9af14f8aab959e3a4b688b0052e0
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memory/1660-63-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-54-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-57-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-55-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-56-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-61-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-60-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-58-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/1660-59-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-37-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-46-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-41-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-42-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-39-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-43-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-45-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-44-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-38-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/3156-40-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4340-5-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-2-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-1-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-21-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-3-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-7-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-0-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-4-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-6-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4340-8-0x0000000000250000-0x00000000007A2000-memory.dmpFilesize
5.3MB
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memory/4840-24-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-31-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-30-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-23-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-25-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-22-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-27-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-26-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-28-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB
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memory/4840-29-0x0000000000C70000-0x00000000011C2000-memory.dmpFilesize
5.3MB