Analysis
- max time kernel
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
06/07/2026, 10:55
Behavioral task
behavioral1
Sample
1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll
Resource
win10v2004-20260513-en
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll
Resource
win11ltsc2024-20260629-en
10 signatures
150 seconds
General
- Target 1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll
- Size 3.4MB
- Sample260706-mz4xeah18n
- SHA256 1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd
- MD5 a683dc243b8ebe268ea5e2e3beed2b86
- SHA1 5f256c1aebd7f51aa86b86a89a3aaa4245106a95
- SHA512 eaa50f7aeda6347b5fcc645baf412ecba979658beb33e3909406d1c265106c27c66b13691f2b55f83ed092a1098d3e29974b047e799284e4c1d971338cb314b1
- SSDEEP 98304:s9jarcsdM/psAJayVo9HLx8jDWgn8DCTdU6LdvXf5:6jCapsAUmo9H18HWe8+pUEJx
- TLSH T156F533DF2BA10C9DF88EE637AC134C42A811D8633E925332D46F759C2D56A0D97BA770
- MD5 SHA1 SHA512 SSDEEP TLSH
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__ rundll32.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\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe -
resource yara_rule behavioral2/memory/1208-0-0x0000000010000000-0x0000000010859000-memory.dmp themida behavioral2/memory/1208-1-0x0000000010000000-0x0000000010859000-memory.dmp themida behavioral2/memory/1208-2-0x0000000010000000-0x0000000010859000-memory.dmp themida behavioral2/memory/1208-3-0x0000000010000000-0x0000000010859000-memory.dmp themida behavioral2/memory/1208-4-0x0000000010000000-0x0000000010859000-memory.dmp themida behavioral2/memory/1208-8-0x0000000010000000-0x0000000010859000-memory.dmp themida - Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1208 rundll32.exe - Program crash 1 IoCs
pid pid_target Process procid_target 3200 1208 WerFault.exe 88 - System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1208 rundll32.exe 1208 rundll32.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1208 rundll32.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1660 wrote to memory of 1208 1660 rundll32.exe 88
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1660 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1208 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 7163⤵
- Program crash
PID:3200
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1208 -ip 12081⤵PID:2068