Analysis
- max time kernel
100s - max time network
110s - platform
windows11-21h2_x64 - resource
win11-20250619-en - resource tags
arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system - submitted
13/07/2025, 16:56
Behavioral task
behavioral1
Sample
letsvpn-latest.exe
Resource
win10ltsc2021-20250619-en
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
letsvpn-latest.exe
Resource
win11-20250619-en
5 signatures
150 seconds
General
- Target letsvpn-latest.exe
- Size 18.0MB
- Sample250713-vf4rassp14
- SHA256 77877a13d22fbbdce452791f3015823a3e9b1b48b3cdeb20c118814bfd9072b9
- MD5 38986b39c57adb3d1b54f731f7abc2d9
- SHA1 e8cbdc703669e7887d31a78b5fb0673857b4378d
- SHA512 4d102fa85be16936fe27a505e66446e28a40130e47a3592f740eb74de2946ea82efb323a5ba5626267fbf73bf0cb88c8bf59da8a2decd8f15c7a6a397b19fae9
- SSDEEP 393216:oH2bVjnnqNazoVWLnyConxo0crUGibbkIJ84yE:wYnqgz/yoN6bbkb4yE
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ letsvpn-latest.exe - Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion letsvpn-latest.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion letsvpn-latest.exe -
resource yara_rule behavioral2/memory/2324-0-0x0000000140000000-0x000000014182E000-memory.dmp themida behavioral2/memory/2324-1-0x0000000140000000-0x000000014182E000-memory.dmp themida behavioral2/memory/2324-2-0x0000000140000000-0x000000014182E000-memory.dmp themida behavioral2/memory/2324-3-0x0000000140000000-0x000000014182E000-memory.dmp themida behavioral2/memory/2324-5-0x0000000140000000-0x000000014182E000-memory.dmp themida - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2324 letsvpn-latest.exe - Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA letsvpn-latest.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\letsvpn-latest.exe"C:\Users\Admin\AppData\Local\Temp\letsvpn-latest.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks whether UAC is enabled
PID:2324