a849e0c7741599b0fd60392d0eeb5d83e215f4f90795af60bf1ad20bd530cb9c

Analysis

user interaction
yes
max time kernel
56s
max time network
38s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
19/07/2026, 12:29

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General

Target
loader.exe
Size 18.0MB
Sample260719-ppdctabs6m
SHA256 a849e0c7741599b0fd60392d0eeb5d83e215f4f90795af60bf1ad20bd530cb9c
MD5 fc4c13973d35400640794fef290476ab
SHA1 1f363819b1644942838c972be35ed95e42defee7
SHA512 acbd0e53b324f8d5ffc086b63eaf8535bd60590dbeab9ba26c910fbcd3d6e5d977465e9e3a65501d030be0850853e1cd4777b5d707bd191fe2726b2d03599d6a
SSDEEP 393216:eIDKl6Ffh82f3Ug9qd5MDWO4Icq+zj641v6Yw:ee3Zqd5My9lqnSw
TLSH
T1B71712C125E982FDC362C63DD24617EAE9C93C858DBB652ABFCA64013471C45C8EBD39
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

bootkit execution persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3904	loader.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4516	powershell.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	loader.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4848	loader.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
1076	cmd.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	loader.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "134289378106113860"	loader.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4516	powershell.exe
4516	powershell.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
4848	loader.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4848	loader.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSystemtimePrivilege	4848	loader.exe
Token: SeDebugPrivilege	4516	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 3904	4848	loader.exe	84
PID 3904 wrote to memory of 1076	3904	loader.exe	85
PID 1076 wrote to memory of 4516	1076	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\loader.exe
  "C:\Users\Admin\AppData\Local\Temp\loader.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Modifies data under HKEY_USERS
  - Suspicious use of WriteProcessMemory
  PID:3904
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c powershell.exe -NoProfile -ExecutionPolicy Bypass -Command ^"^& { $encoded = 'QXBwIGluaXRpYWxpemF0aW9uIGVycm9yIDB4MTAz'; $text = [System.Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($encoded)); $text = $text.Replace('\n', [Environment]::NewLine); Add-Type -AssemblyName PresentationFramework; [System.Windows.MessageBox]::Show($text, 'sync.top', 'OK', 'Error', 'None', 'DefaultDesktopOnly') }^"
    3⤵
    - Executes a command shell one-liner
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -NoProfile -ExecutionPolicy Bypass -Command "& { $encoded = 'QXBwIGluaXRpYWxpemF0aW9uIGVycm9yIDB4MTAz'; $text = [System.Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($encoded)); $text = $text.Replace('\n', [Environment]::NewLine); Add-Type -AssemblyName PresentationFramework; [System.Windows.MessageBox]::Show($text, 'sync.top', 'OK', 'Error', 'None', 'DefaultDesktopOnly') }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4516

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_1wzvucmf.ftw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1wzvucmf.ftw.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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loader.exe

Path C:\Users\Admin\AppData\Local\Temp\loader.exe
Size 18.0MB
SHA256 17a5c574879eb9bdca389f6a9c770ffafc287915d45ea4a7ca7b4ba5ee63d520
MD5 81845d4e8444309b36e0f44c7d29e766
SHA1 110c818f3ce71850c74734ee098092229f7c4369
SHA512 39fab47e2f5da7fa8a4e981c317e3e2885b162d845d4a7943c0c4dc3a9339ad9eb3ddcdb2ebb158d8bb3ed3378ab89eddeb7ad586286ed16f6e01c798349d09d
SSDEEP 393216:eIDKl6Ffh82f3Ug9qd5MDWO4Icq+zj641v6YwX:ee3Zqd5My9lqnSwX
TLSH
T13C1712C125E982FDC362C63DD24617EAE9C93C858DBB652ABFCA64013471C45C8EBD39
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3904-8-0x00007FF7AD1F0000-0x00007FF7AF3DB000-memory.dmp

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memory/3904-24-0x00007FF7AD1F0000-0x00007FF7AF3DB000-memory.dmp

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memory/4516-21-0x00000251D1ED0000-0x00000251D1EF2000-memory.dmp

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memory/4848-0-0x00007FF783070000-0x00007FF78525B000-memory.dmp

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memory/4848-7-0x00007FF783070000-0x00007FF78525B000-memory.dmp

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