Analysis
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max time kernel
143s -
max time network
114s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
15-05-2024 12:58
Behavioral task
behavioral1
Sample
a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe
Resource
win10v2004-20240508-en
General
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Target
a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe
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Size
1.5MB
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MD5
32187c18a470b54095365f8db359a671
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SHA1
3ce7f687006e176a5b1554e30decdfed60e35aae
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SHA256
a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948
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SHA512
a9873b6ac3f480ad881bee4fe52d960127696f816007ee1ed4a2511ff82f7cc10ec98ef16cdc2869b49b716d3453ee6a7d952a1988083d046ba05dd9d579449a
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SSDEEP
24576:92vbP2LX8eT+onZIeV1B/0ZGP5Ulz9xw0i0sx9rNqdy5/rwjXUx68BFrgPUv:9kyweTrZIQ8o2z9ST089BqurwLI7vMcv
Malware Config
Extracted
amadey
4.20
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
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.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.
description ioc Process 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 a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.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 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe -
Executes dropped EXE 3 IoCs
pid Process 2608 explorku.exe 4632 explorku.exe 4792 explorku.exe -
resource yara_rule behavioral1/memory/4000-0-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-1-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-3-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-8-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-7-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-5-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-4-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-6-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/4000-2-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/files/0x0008000000023429-14.dat themida behavioral1/memory/2608-21-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4000-20-0x0000000000620000-0x0000000000B0C000-memory.dmp themida behavioral1/memory/2608-23-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-27-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-30-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-28-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-29-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-26-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-25-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-24-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/2608-31-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-36-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-38-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-42-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-41-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-40-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-39-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-37-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-43-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4632-45-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-53-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-55-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-59-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-60-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-58-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-57-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-56-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-54-0x00000000002B0000-0x000000000079C000-memory.dmp themida behavioral1/memory/4792-62-0x00000000002B0000-0x000000000079C000-memory.dmp themida -
description 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 a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.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
description ioc Process File created C:\Windows\Tasks\explorku.job a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.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
description pid Process procid_target PID 4000 wrote to memory of 2608 4000 a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe 85 PID 4000 wrote to memory of 2608 4000 a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe 85 PID 4000 wrote to memory of 2608 4000 a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.exe"C:\Users\Admin\AppData\Local\Temp\a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948.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:4000 -
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:2608
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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:4632
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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:4792
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.5MB
MD532187c18a470b54095365f8db359a671
SHA13ce7f687006e176a5b1554e30decdfed60e35aae
SHA256a3ad43bf945a9448fbeeb1ce1a9eeb86910dd98c25600eb2eea37c665c90f948
SHA512a9873b6ac3f480ad881bee4fe52d960127696f816007ee1ed4a2511ff82f7cc10ec98ef16cdc2869b49b716d3453ee6a7d952a1988083d046ba05dd9d579449a