Analysis
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max time kernel
144s -
max time network
94s -
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 19:32
Behavioral task
behavioral1
Sample
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe
Resource
win10v2004-20240508-en
General
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Target
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe
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Size
1.7MB
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MD5
36c3b9748283ffa4e836d152b03d3037
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SHA1
29b15ca6608f7e6926cca5e68af95248a0757738
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SHA256
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492
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SHA512
b1ceef14673a3cbe7ea0bdf12afd76f5e6dcde144f3cbfc6729ccb9223eb87e5c1a41cebef405800f8fb48c99989a504e6d8c6301402ea43622613fcc80da0a5
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SSDEEP
49152:W3g9s226SDOrl54icd3XfZ1ppfo2hrpnWd:W3g9C6x5evZ17zG
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.exeexplorku.exeexplorku.exeff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exedescription ioc process 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__ ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe -
Checks BIOS information in registry 2 TTPs 8 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
explorku.exeff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exeexplorku.exeexplorku.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.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 -
Executes dropped EXE 3 IoCs
Processes:
explorku.exeexplorku.exeexplorku.exepid process 4364 explorku.exe 1332 explorku.exe 416 explorku.exe -
Processes:
resource yara_rule behavioral2/memory/3144-3-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-1-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-0-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-2-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-4-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-8-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-7-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-5-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/3144-6-0x00000000006F0000-0x0000000000C31000-memory.dmp themida C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe themida behavioral2/memory/3144-21-0x00000000006F0000-0x0000000000C31000-memory.dmp themida behavioral2/memory/4364-23-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-25-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-24-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-22-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-29-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-26-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-28-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-30-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-27-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/4364-31-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-38-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-37-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-40-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-44-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-45-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-43-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-41-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-42-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-39-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/1332-47-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-56-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-62-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-59-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-58-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-61-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-60-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-57-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-55-0x0000000000330000-0x0000000000871000-memory.dmp themida behavioral2/memory/416-63-0x0000000000330000-0x0000000000871000-memory.dmp themida -
Processes:
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exeexplorku.exeexplorku.exeexplorku.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.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:
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exedescription ioc process File created C:\Windows\Tasks\explorku.job ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.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:
ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exedescription pid process target process PID 3144 wrote to memory of 4364 3144 ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe explorku.exe PID 3144 wrote to memory of 4364 3144 ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe explorku.exe PID 3144 wrote to memory of 4364 3144 ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe explorku.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.exe"C:\Users\Admin\AppData\Local\Temp\ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492.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
PID:3144 -
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:4364
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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:1332
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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:416
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.7MB
MD536c3b9748283ffa4e836d152b03d3037
SHA129b15ca6608f7e6926cca5e68af95248a0757738
SHA256ff8fa7cbccb7728c876ec84e26ccc56cc8d3e75ae97a47120142c222c1aca492
SHA512b1ceef14673a3cbe7ea0bdf12afd76f5e6dcde144f3cbfc6729ccb9223eb87e5c1a41cebef405800f8fb48c99989a504e6d8c6301402ea43622613fcc80da0a5