7a64f9f2d346404f7f53d530f788330ee40fbf84ef0aa587c9b3f65f44c9d823

Analysis

user interaction
yes
max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
24/09/2026, 00:47

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General

Target
loader.exe
Size 18.0MB
Sample260924-a5la2aaa72
SHA256 7a64f9f2d346404f7f53d530f788330ee40fbf84ef0aa587c9b3f65f44c9d823
MD5 4f409eba195a8c63a8e2a40f41c29f2b
SHA1 da0a8f71bb17a6c68794d31dd8ab995de9b02f9c
SHA512 605d24bb5ef2031f43a7653635e3f78ea524c0ad74e5a003abe0a08228c520d0bfc901689b1eab84d0b3821cd0e9015e49bcd6252eb78cccae0e857fdf1f05ef
SSDEEP 393216:eIDKl6Ffh82f3Ug9qd5MDWO4Icq+zj641v6Ywk:ee3Zqd5My9lqnSwk
TLSH
T1F01712C125E982FDC362C63DD24617EAE9C93C858DBB652ABFCA64013471C45C8EBD39
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

bootkit defense_evasion execution persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5360	loader.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4656	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 TTPs 1 IoCs

defense_evasion

Debugger Evasion

T1622

pid	Process
2256	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
884	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 = "134346844987428119"	loader.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4656	powershell.exe
4656	powershell.exe
4656	powershell.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
2256	loader.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2256	loader.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSystemtimePrivilege	2256	loader.exe
Token: SeDebugPrivilege	4656	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 5360	2256	loader.exe	89
PID 5360 wrote to memory of 884	5360	loader.exe	96
PID 884 wrote to memory of 4656	884	cmd.exe	101

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:2256
- 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:5360
- - 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:884
  - - 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:4656

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

Debugger Evasion

T1622

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Debugger Evasion

T1622

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_ay03kzs1.he2.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ay03kzs1.he2.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 92ed63628edaba4bdf1fae0aea3b98c3add34136d6a2dd74d52d25de1ce3c3d9
MD5 17ff9e9148a34be09efb730499889768
SHA1 3f535f438c5b01e9a6daa99817893b885f733a1e
SHA512 0ac5d82fb7c198840202028723a96c01ba52a1097ac706d35943cdd5baf1e48601c55173c0fb9945ff80f35132cd96eb9bf656cf9d981d7c0c6121e80bffa057
SSDEEP 393216:eIDKl6Ffh82f3Ug9qd5MDWO4Icq+zj641v6YwC:ee3Zqd5My9lqnSwC
TLSH
T1FB1712C125E982FDC362C63DD24617EAE9C93C858DBB652ABFCA64013471C45C8EBD39
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2256-0-0x00007FF646AE0000-0x00007FF648CCB000-memory.dmp

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memory/2256-7-0x00007FF646AE0000-0x00007FF648CCB000-memory.dmp

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memory/4656-23-0x00000175C5260000-0x00000175C5282000-memory.dmp

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memory/5360-8-0x00007FF68F380000-0x00007FF69156B000-memory.dmp

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memory/5360-17-0x00007FF68F380000-0x00007FF69156B000-memory.dmp

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