Analysis
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max time kernel
150s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 04:25
Behavioral task
behavioral1
Sample
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe
Resource
win10v2004-20240508-en
General
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Target
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe
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Size
1.5MB
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MD5
a97ae966f6d1ba6ce5974e8e75b5547c
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SHA1
fe25fa6d3b8bd1011dbd75679d5c2d2fa104c1d5
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SHA256
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c
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SHA512
cdd531ec256ac307ac83293498cf310447f6365669735f40c272475ceeb522307a809181066343ad51f0c519fa9a10041673c13b9865b73fa17de19222544c5d
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SSDEEP
49152:SHPkE3TgFQbKDH2reQaBrik54R6ErutPT8nD:8cE3amKDH+edJ541KtPT2
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 5 IoCs
Processes:
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exeexplorku.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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 Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe -
Checks BIOS information in registry 2 TTPs 10 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
explorku.exe83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe -
Executes dropped EXE 4 IoCs
Processes:
explorku.exeexplorku.exeexplorku.exeexplorku.exepid process 2988 explorku.exe 2788 explorku.exe 4568 explorku.exe 4816 explorku.exe -
Processes:
resource yara_rule behavioral1/memory/400-0-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-1-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-2-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-3-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-7-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-6-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-5-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-4-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/400-8-0x0000000000830000-0x0000000000D14000-memory.dmp themida C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe themida behavioral1/memory/2988-22-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-24-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-30-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-29-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-28-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-25-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-26-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-27-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2988-23-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/400-21-0x0000000000830000-0x0000000000D14000-memory.dmp themida behavioral1/memory/2988-31-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-34-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-37-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-40-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-41-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-39-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-38-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-36-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-35-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-42-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/2788-43-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-51-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-56-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-58-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-57-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-55-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-52-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-53-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-54-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4568-60-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-68-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-69-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-73-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-72-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-71-0x0000000000D20000-0x0000000001204000-memory.dmp themida behavioral1/memory/4816-70-0x0000000000D20000-0x0000000001204000-memory.dmp themida -
Processes:
explorku.exeexplorku.exeexplorku.exeexplorku.exe83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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 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 Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe -
Drops file in Windows directory 1 IoCs
Processes:
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exedescription ioc process File created C:\Windows\Tasks\explorku.job 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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:
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exedescription pid process target process PID 400 wrote to memory of 2988 400 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe explorku.exe PID 400 wrote to memory of 2988 400 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe explorku.exe PID 400 wrote to memory of 2988 400 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe explorku.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe"C:\Users\Admin\AppData\Local\Temp\83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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
PID:400 -
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
PID:2988
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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
PID:2788
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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
PID:4568
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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
PID:4816
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.5MB
MD5a97ae966f6d1ba6ce5974e8e75b5547c
SHA1fe25fa6d3b8bd1011dbd75679d5c2d2fa104c1d5
SHA25683c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c
SHA512cdd531ec256ac307ac83293498cf310447f6365669735f40c272475ceeb522307a809181066343ad51f0c519fa9a10041673c13b9865b73fa17de19222544c5d