Analysis
- max time kernel
149s - max time network
133s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260706-en - resource tags
- submitted
08/07/2026, 12:40
General
- Target MecchaChameleon.exe
- Size 10.6MB
- Sample260708-pwpdnagy3r
- SHA256 bc163b34de39ac8dd8e6a813d19556da59a25f9e3ab2d4ab2ee2c9cb7d8e35d0
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 1 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe"C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe" MD5 | find /i /v "md5" | find /i /v "certutil"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\certutil.execertutil -hashfile "C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe" MD53⤵
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C:\Windows\system32\find.exefind /i /v "md5"3⤵
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C:\Windows\system32\find.exefind /i /v "certutil"3⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ka_updater.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\PING.EXEping 127.0.0.1 -n 23⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe"C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe" MD5 | find /i /v "md5" | find /i /v "certutil"4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\certutil.execertutil -hashfile "C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe" MD55⤵
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C:\Windows\system32\find.exefind /i /v "md5"5⤵
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C:\Windows\system32\find.exefind /i /v "certutil"5⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MecchaChameleon_updated.exe
ka_updater.bat
memory/580-0-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/580-1-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/580-3-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/580-2-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/580-7-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/580-19-0x0000000140000000-0x0000000141A2A000-memory.dmp
memory/2800-23-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-25-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-24-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-26-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-27-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-28-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-29-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-30-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-31-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-32-0x0000000140000000-0x00000001419CC000-memory.dmp
memory/2800-33-0x0000000140000000-0x00000001419CC000-memory.dmp