850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5

Analysis

max time kernel
149s
max time network
114s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/08/2026, 08:47

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General

Target
850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe
Size 4.6MB
Sample260805-kp2cestbnb
SHA256 850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5
MD5 baddf79e6f29f602d694e83baeb5b821
SHA1 f0dc9ddad3e1aa7074bd17eafc8de4d9abae1735
SHA512 6d75a61062831b59ba8c39d5dfce7cef5a51f17ce77c5deb1ec95390cb6259c892a9069398d108b959cd3126f58862790086a64a43e41d2fe2f880d914cadace
SSDEEP 98304:c5jmHOs0jtpYSuVfzcT5/1NoV7GsF/nFFSBpdhVpKSJeozbLJXg:cUHR0jpuiThzQ7GsF9F4LhVIQLJXg
TLSH
T1FD26331BC9610FDAE72497FA6B33F04B991076275E423B017A5F85D2A306D6C33E1B68
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit defense_evasion discovery execution persistence 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__	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.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\SystemBiosVersion	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.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	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
356	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4552	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
356	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe
356	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 356 wrote to memory of 4552	356	850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe	90

C:\Users\Admin\AppData\Local\Temp\850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe
"C:\Users\Admin\AppData\Local\Temp\850a45f7f37cc698a0310f48b435effc58ba9ed850412e2433fd8a0081fb1fc5.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:356
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c pause
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4552

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

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/356-0-0x0000000000BA0000-0x00000000016C1000-memory.dmp

Download

memory/356-2-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-3-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-7-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-9-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-6-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-5-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-8-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-4-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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memory/356-10-0x0000000000BA0000-0x00000000016C1000-memory.dmp

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