efa4d3a6602983dc6f69d2ac6ee331259f7400843cbde8b7d77911ee0ebb0324

Analysis

max time kernel
148s
max time network
140s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/09/2026, 08:37

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General

Target
efa4d3a6602983dc6f69d2ac6ee331259f7400843cbde8b7d77911ee0ebb0324.dll
Size 3.0MB
Sample260916-kh77dsss8j
SHA256 efa4d3a6602983dc6f69d2ac6ee331259f7400843cbde8b7d77911ee0ebb0324
MD5 c048bde35551b1eb73e019fb1c7709e7
SHA1 92653d3bb8e9da892086a1d5a424a29955d3ab82
SHA512 d9b4c381ceda6c6259047d22dece4c09d3109efb4077b8ef56cf60bb3904cac178437894276da2983c7eb04a32e5cbaede808291b94d11a572de2628ce230f7e
SSDEEP 49152:hIPpwgd/2RCcrkQRt7C1PZn8/bAD2uZNVFmaJ5V/PYAuGbCDmwBvbNmvEcuzxW4X:kwPnE8sDVTVIaB3YAu2CD5vbDhzh
TLSH
T14AE5332A4222DAB6E237FF3E61630E70405B3744EC11368EBD9F1AAD31615ADD7B4A50
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

defense_evasion discovery trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

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.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

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
2928	rundll32.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
504	2928	WerFault.exe	87
3540	2928	WerFault.exe	87

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2928	rundll32.exe
2928	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2928	2068	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\efa4d3a6602983dc6f69d2ac6ee331259f7400843cbde8b7d77911ee0ebb0324.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\efa4d3a6602983dc6f69d2ac6ee331259f7400843cbde8b7d77911ee0ebb0324.dll,#1
  2⤵
  - 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
  PID:2928
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 636
    3⤵
    - Program crash
    PID:504
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 644
    3⤵
    - Program crash
    PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2928 -ip 2928
1⤵
PID:5400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2928 -ip 2928
1⤵
PID:4804

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2928-1-0x0000000010000000-0x00000000107C7000-memory.dmp

Download

memory/2928-2-0x0000000010000000-0x00000000107C7000-memory.dmp

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memory/2928-0-0x0000000010000000-0x00000000107C7000-memory.dmp

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memory/2928-6-0x000000006EC70000-0x000000006EC80000-memory.dmp

Download

memory/2928-4-0x000000006EC70000-0x000000006EC80000-memory.dmp

Download

memory/2928-3-0x000000006EC70000-0x000000006EC80000-memory.dmp

Download

memory/2928-5-0x000000006EC70000-0x000000006EC80000-memory.dmp

Download

memory/2928-7-0x0000000010000000-0x00000000107C7000-memory.dmp

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