15fe2d182deddb80aaa689167daa7cd8ff5f545d7cf536b44dc60239f8bd8bb8

Analysis

user interaction
yes
max time kernel
600s
max time network
478s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/08/2026, 22:11

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General

Target
1mfrhu2aqhk5.exe
Size 949KB
Sample260818-135vrstsgx
SHA256 15fe2d182deddb80aaa689167daa7cd8ff5f545d7cf536b44dc60239f8bd8bb8
MD5 ee5fa9f298940e5ec21e0a3b8c52e128
SHA1 61b802d9b9916a547c37ac39cdad53ea42672187
SHA512 08ea0b8e77d46a3819496a894ee000d54879357c810bff24957698b7660fbcfb391d9498bcb65134cdccc6044b87b6ba32b6a87fc63eaf7b55f3c3624b566355
SSDEEP 12288:9XbAaGDXYVGBDp51jus54CudCbSHpZnhpta4/ZJ9AuQz4AILdAKf0v:5GBD7nu+SHLxr/ZJDRTdcv
TLSH
T1CA256C706A9A8C02D1C32BB502B0D3B1D7756CC95827D343DBFBECABB86A257BC85544
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion discovery execution persistence

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\$pwnterm\Parameters\ServiceDll = "%SystemRoot%\\System32\\$pwnroot.dll"	nvc1dxk2.zza.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 4 IoCs

pid	Process
3628	nvc1dxk2.zza.exe
4196	$pwnRuntimeBroker.exe
3420	$pwnRuntimeBroker.exe
4064	$pwnRuntimeBroker.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002
Network Share Discovery 1 TTPs
Attempt to gather information on host network.
discovery

Network Share Discovery
T1135

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\$pwnroot.dll	$pwnRuntimeBroker.exe
File created	C:\Windows\System32\$pwnroot.dll	nvc1dxk2.zza.exe
File opened for modification	C:\Windows\System32\$pwnroot.dll	nvc1dxk2.zza.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Winus\$pwnRuntimeBroker.exe	$pwnRuntimeBroker.exe
File created	C:\Windows\Winus\$pwnRuntimeBroker.exe	nvc1dxk2.zza.exe
File opened for modification	C:\Windows\Winus\$pwnRuntimeBroker.exe	nvc1dxk2.zza.exe
File opened for modification	C:\Windows\speechCache\$pwnRuntimeBroker.exe	nvc1dxk2.zza.exe
File opened for modification	C:\Windows\System32	$pwnRuntimeBroker.exe
File opened for modification	C:\Windows\Winus	$pwnRuntimeBroker.exe
File opened for modification	C:\Windows\speechCache	$pwnRuntimeBroker.exe
File opened for modification	C:\Windows\speechCache\$pwnRuntimeBroker.exe	$pwnRuntimeBroker.exe
File created	C:\Windows\speechCache\$pwnRuntimeBroker.exe	nvc1dxk2.zza.exe

Launches sc.exe 4 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4536	sc.exe
4124	sc.exe
2620	sc.exe
1748	sc.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 9 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
5056	cmd.exe
4120	CMD.exe
4388	cmd.exe
5780	CMD.exe
4832	CMD.exe
2784	cmd.exe
4820	cmd.exe
4412	CMD.exe
4348	CMD.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2404	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4456	schtasks.exe
5448	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4196	$pwnRuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3628	nvc1dxk2.zza.exe
Token: SeDebugPrivilege	4196	$pwnRuntimeBroker.exe
Token: SeDebugPrivilege	3420	$pwnRuntimeBroker.exe
Token: SeDebugPrivilege	4064	$pwnRuntimeBroker.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 5056	4216	1mfrhu2aqhk5.exe	90
PID 5056 wrote to memory of 3628	5056	cmd.exe	92
PID 3628 wrote to memory of 2784	3628	nvc1dxk2.zza.exe	94
PID 3628 wrote to memory of 4820	3628	nvc1dxk2.zza.exe	96
PID 2784 wrote to memory of 4456	2784	cmd.exe	98
PID 4820 wrote to memory of 5448	4820	cmd.exe	99
PID 3628 wrote to memory of 52	3628	nvc1dxk2.zza.exe	100
PID 3628 wrote to memory of 4120	3628	nvc1dxk2.zza.exe	101
PID 4120 wrote to memory of 1748	4120	CMD.exe	104
PID 52 wrote to memory of 4536	52	CMD.exe	105
PID 3628 wrote to memory of 4064	3628	nvc1dxk2.zza.exe	110
PID 4196 wrote to memory of 4412	4196	$pwnRuntimeBroker.exe	112
PID 4196 wrote to memory of 4348	4196	$pwnRuntimeBroker.exe	113
PID 4196 wrote to memory of 4832	4196	$pwnRuntimeBroker.exe	116
PID 4196 wrote to memory of 5780	4196	$pwnRuntimeBroker.exe	117
PID 4196 wrote to memory of 4388	4196	$pwnRuntimeBroker.exe	118
PID 4412 wrote to memory of 4124	4412	CMD.exe	122
PID 5780 wrote to memory of 3120	5780	CMD.exe	123
PID 4832 wrote to memory of 1292	4832	CMD.exe	124
PID 4348 wrote to memory of 2620	4348	CMD.exe	125
PID 4388 wrote to memory of 2404	4388	cmd.exe	126

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\1mfrhu2aqhk5.exe
"C:\Users\Admin\AppData\Local\Temp\1mfrhu2aqhk5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c start C:\Users\Admin\AppData\Local\Temp\nvc1dxk2.zza.exe
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5056
- - C:\Users\Admin\AppData\Local\Temp\nvc1dxk2.zza.exe
    C:\Users\Admin\AppData\Local\Temp\nvc1dxk2.zza.exe
    3⤵
    - Server Software Component: Terminal Services DLL
    - Executes dropped EXE
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3628
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd" /c schtasks /create /f /sc minute /mo 5 /tn "Microsoft\SystemCache\FileZilla" /tr "C:\Windows\Winus\$pwnRuntimeBroker.exe" /RL HIGHEST & exit
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:2784
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc minute /mo 5 /tn "Microsoft\SystemCache\FileZilla" /tr "C:\Windows\Winus\$pwnRuntimeBroker.exe" /RL HIGHEST
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:4456
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MicrosoftDebug\OracleChrome" /tr "C:\Windows\speechCache\$pwnRuntimeBroker.exe" /RL HIGHEST & exit
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:4820
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MicrosoftDebug\OracleChrome" /tr "C:\Windows\speechCache\$pwnRuntimeBroker.exe" /RL HIGHEST
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:5448
  - - C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c sc create "$pwnterm" binPath= "C:\Windows\System32\svchost.exe -k NetworkManager" start= auto type= share & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:52
    - - C:\Windows\system32\sc.exe
        
        sc create "$pwnterm" binPath= "C:\Windows\System32\svchost.exe -k NetworkManager" start= auto type= share
        5⤵
        Launches sc.exe
        
        PID:4536
  - - C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c sc start "$pwnterm" & exit
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:4120
    - - C:\Windows\system32\sc.exe
        
        sc start "$pwnterm"
        5⤵
        Launches sc.exe
        
        PID:1748
  - - C:\Windows\Winus\$pwnRuntimeBroker.exe
      "C:\Windows\Winus\$pwnRuntimeBroker.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:4064

C:\Windows\Winus\$pwnRuntimeBroker.exe
C:\Windows\Winus\$pwnRuntimeBroker.exe
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c sc stop "$pwnterm" & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4412
- - C:\Windows\system32\sc.exe
    sc stop "$pwnterm"
    3⤵
    - Launches sc.exe
    PID:4124
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c sc delete "$pwnterm" & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4348
- - C:\Windows\system32\sc.exe
    sc delete "$pwnterm"
    3⤵
    - Launches sc.exe
    PID:2620
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c schtasks /delete /F /Tn "Microsoft\SystemCache\FileZilla" & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\system32\schtasks.exe
    schtasks /delete /F /Tn "Microsoft\SystemCache\FileZilla"
    3⤵
    PID:1292
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c schtasks /delete /F /Tn "Microsoft\MicrosoftDebug\OracleChrome" & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5780
- - C:\Windows\system32\schtasks.exe
    schtasks /delete /F /Tn "Microsoft\MicrosoftDebug\OracleChrome"
    3⤵
    PID:3120
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\s0uzilnx.eoj.bat""
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\system32\timeout.exe
    timeout 10
    3⤵
    - Delays execution with timeout.exe
    PID:2404

C:\Windows\speechCache\$pwnRuntimeBroker.exe
C:\Windows\speechCache\$pwnRuntimeBroker.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3420

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:3492

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

Network Share Discovery

T1135

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

nvc1dxk2.zza.exe

Path C:\Users\Admin\AppData\Local\Temp\nvc1dxk2.zza.exe
Size 603KB
SHA256 ec2085a6d74a6561c9aa8ef0da487669565f370d2aca4e3d0273be42796a1b96
MD5 f0b56d11a4ec9e39840ea70c7b11a119
SHA1 ddd741f977fb6daacb3dbf232c1f23003fdb1442
SHA512 3e0585de42e3d58dacc9396f113200fe7b05e57918d3f01b77f82ffe596c02610db660339bc51b5d7c662d19088c4130ca46bec6453dec673c98566e1122684c
SSDEEP 12288:rK1C9RkfDKqX+MlPQsNFRtq5bDh5gAr3FmrAQlBt4SzbboCdKBDk+e5:8kkfDfOMlPnWh5gS0/tJPUPBDQ
TLSH
T102D459367FF40D22F2D506BC89BA6216C72565967623B387B78B32720D8235CED197C8
MD5 SHA1 SHA512 SSDEEP TLSH

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s0uzilnx.eoj.bat

Path C:\Users\Admin\AppData\Local\Temp\s0uzilnx.eoj.bat
Size 262B
SHA256 4585e1c11f2fe9855bef6f6c680ec045ba366c2c693f7cc679331b1cba8b19bd
MD5 5dba9654306f8f3e8a063b4225a7a5c3
SHA1 2aeed25bae3c18be6c3c6061680443d86fe6357a
SHA512 e4178abd32e9ab41e5f7a8f4efe4b681f35c61b58806e207d49558e826b5c54683cc9729ccd9ca223db6eafdd26da5798a65275111284527206011589abc3118
TLSH
T153D05E2125D9A2934E061D62345D92D7821AE37AA684372027EC4100BC2129AD9BEFC8
MD5 SHA1 SHA512 TLSH

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$pwnroot.dll

Path C:\Windows\System32\$pwnroot.dll
Size 104KB
SHA256 281990dfdfaad3a777c237842cfb0ca58ae69a36998e7eac2be787a2f45c0636
MD5 be2e9693fd36638efef79e2523455609
SHA1 6a32dd10e00fd85214566c805209792eb6ac2130
SHA512 16f01f43331376f46cf21ada916bd879ad4ed5aae7d894771aa606ff6b34121f1f9db2ae5a565fa325d9b074716c3e6ab9e84ef231815fbb724780e06ca0d716
SSDEEP 3072:P8kfTl9zCpxuTnABP3tuDB2Q9ZVbZaZaLZt3LvgRN:PnTbCrwwP3tY5yN
TLSH
T19EA35A4B62E600BBE2B78638C5534E4997B2B8511720AFEF43A0065A1F277D19D3DF72
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3628-15-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-16-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-124-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-18-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-17-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-12-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-11-0x000001FA7A3E0000-0x000001FA7A47C000-memory.dmp

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memory/3628-13-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/3628-14-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-0-0x00000251E71D0000-0x00000251E72C2000-memory.dmp

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memory/4216-4-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-3-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-6-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-2-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-7-0x00007FF9C39F0000-0x00007FF9C4394000-memory.dmp

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memory/4216-1-0x00007FF9C3B7F000-0x00007FF9C3B80000-memory.dmp

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