77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16

Analysis

max time kernel
150s
max time network
127s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
25/08/2026, 08:24

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General

Target
77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe
Size 6.6MB
Sample260825-ka2pmsyfkb
SHA256 77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16
MD5 2d97b04ac60422c67980dcb2a9c8ba8c
SHA1 fe4d33a5ec8d26e3057931457258b75f7b943423
SHA512 843301bc10ea0eb0c62f67632ade3a92c55b7a102eb0a2e2f599a6695a8ab2af2f3dd27a11496bfe26179401461c21bb72c5d41ff61bdcba31a650314a884423
SSDEEP 196608:gYkgZPw5viBHjo7m1s4Ent4Jv9l8f+UHmerl:Pt+iBHYmXJFlGHmerl
TLSH
T1236623BEBA87051ACCD1EC7DEA58912CB6B09C47999FC596D7B277BAD8348D043930C0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit defense_evasion discovery 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__	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.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	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.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	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.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	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
5884	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
6052	5884	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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5884	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe
5884	77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe

C:\Users\Admin\AppData\Local\Temp\77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.exe
"C:\Users\Admin\AppData\Local\Temp\77c8fb05fcfacd09819ff415446aca61e3d9f58710c079c8eb1494b7424e7b16.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
PID:5884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5884 -s 1200
  2⤵
  - Program crash
  PID:6052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5884 -ip 5884
1⤵
PID:5136

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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/5884-0-0x0000000000610000-0x0000000001764000-memory.dmp

Download

memory/5884-1-0x000000007576E000-0x000000007576F000-memory.dmp

Download

memory/5884-6-0x0000000075620000-0x00000000758AA000-memory.dmp

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memory/5884-7-0x0000000000610000-0x0000000001764000-memory.dmp

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memory/5884-8-0x0000000000610000-0x0000000001764000-memory.dmp

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memory/5884-9-0x0000000075620000-0x00000000758AA000-memory.dmp

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memory/5884-12-0x0000000075620000-0x00000000758AA000-memory.dmp

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memory/5884-11-0x0000000000610000-0x0000000001764000-memory.dmp

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