Analysis
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max time kernel
144s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 04:07
Behavioral task
behavioral1
Sample
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe
Resource
win10v2004-20240508-en
General
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Target
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe
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Size
1.7MB
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MD5
558f79e0fee42f7bbba6041cdca0a879
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SHA1
86a57912e7d62e07e5281c1aeb900d08775c63c1
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SHA256
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60
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SHA512
0497bbcb900630713c89236beee0919c080fddeffed3c5a5a5bc14b242a0d0a5b631a8b56b6a96df2d541a6ec4c07d767f970169fed1edc99dee33e6f73793a6
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SSDEEP
49152:5UTNaUJAB9LJVlJSOkrjsfdC59HV9k1DLwNjrFi:5UTEg+zO4CvHV61DL6M
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:
explorku.exe7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exeexplorku.exeexplorku.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.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:
explorku.exeexplorku.exeexplorku.exe7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exedescription ioc process 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 Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe -
Executes dropped EXE 3 IoCs
Processes:
explorku.exeexplorku.exeexplorku.exepid process 5076 explorku.exe 2912 explorku.exe 4168 explorku.exe -
Processes:
resource yara_rule behavioral1/memory/3912-2-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-6-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-8-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-7-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-5-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-4-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-3-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-1-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/3912-0-0x00000000009E0000-0x0000000000F25000-memory.dmp themida C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe themida behavioral1/memory/5076-22-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-25-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-29-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-28-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-27-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-26-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-23-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-24-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/3912-21-0x00000000009E0000-0x0000000000F25000-memory.dmp themida behavioral1/memory/5076-30-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/5076-31-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-39-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-42-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-43-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-44-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-45-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-41-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-40-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-38-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-37-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/2912-46-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-54-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-55-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-57-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-56-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-61-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-60-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-59-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-58-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida behavioral1/memory/4168-63-0x0000000000A80000-0x0000000000FC5000-memory.dmp themida -
Processes:
explorku.exe7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exeexplorku.exeexplorku.exedescription ioc process 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 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.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:
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exedescription ioc process File created C:\Windows\Tasks\explorku.job 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.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:
7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exedescription pid process target process PID 3912 wrote to memory of 5076 3912 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe explorku.exe PID 3912 wrote to memory of 5076 3912 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe explorku.exe PID 3912 wrote to memory of 5076 3912 7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe explorku.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe"C:\Users\Admin\AppData\Local\Temp\7bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- 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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeFilesize
1.7MB
MD5558f79e0fee42f7bbba6041cdca0a879
SHA186a57912e7d62e07e5281c1aeb900d08775c63c1
SHA2567bcb6c91621a4a3484d0d305b5c4791fef8bd5af656da440d2c48671d2dbab60
SHA5120497bbcb900630713c89236beee0919c080fddeffed3c5a5a5bc14b242a0d0a5b631a8b56b6a96df2d541a6ec4c07d767f970169fed1edc99dee33e6f73793a6
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memory/2912-39-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-37-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-38-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-40-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-41-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-45-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-44-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-46-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-43-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/2912-42-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/3912-1-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-2-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-6-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-8-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-7-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-5-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-4-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-21-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-3-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/3912-0-0x00000000009E0000-0x0000000000F25000-memory.dmpFilesize
5.3MB
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memory/4168-56-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-63-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-54-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-55-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-57-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-58-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-61-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-60-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/4168-59-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-22-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-31-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-30-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-24-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-23-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-26-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-27-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-28-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-29-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB
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memory/5076-25-0x0000000000A80000-0x0000000000FC5000-memory.dmpFilesize
5.3MB