16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c

Analysis

max time kernel
150s
max time network
142s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
19/07/2026, 23:19

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General

Target
16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe
Size 4.1MB
Sample260719-3atcdafv6m
SHA256 16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c
MD5 e4c7541b94ae14e15b8b6155a5318fb5
SHA1 c3e0bf86c16bdeb168478df2232c8e81df25ce14
SHA512 d96ef8013262141325349a98decc94ac55c9cd6f137b2a603187df158facc3a717a11f99ca05bb9e57726c9704568ee4724cc83a488075f7d71ba73b9be5567d
SSDEEP 98304:X5TJAsm3rq818mVc+GfhGlrbwkhtnVuMjA0C:ZqBbq818mC+GftytVu
TLSH
T1F8161265E8DA40ECC817E1FD9BDA9E76EC7730550F2457EB83F053392A228E4CEA6101
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

execution persistence

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2664	RuntimeBroker64.exe
960	RuntimeBroker64.exe
2368	RuntimeBroker64.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\.lock	RuntimeBroker64.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
5136	schtasks.exe
5564	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe
3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe
960	RuntimeBroker64.exe
960	RuntimeBroker64.exe
2664	RuntimeBroker64.exe
2664	RuntimeBroker64.exe
2368	RuntimeBroker64.exe
2368	RuntimeBroker64.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3704 wrote to memory of 5068	3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe	88
PID 3704 wrote to memory of 5136	3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe	90
PID 3704 wrote to memory of 5564	3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe	92
PID 3704 wrote to memory of 4056	3704	16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe	93
PID 960 wrote to memory of 4524	960	RuntimeBroker64.exe	100
PID 2664 wrote to memory of 2104	2664	RuntimeBroker64.exe	105
PID 2368 wrote to memory of 5920	2368	RuntimeBroker64.exe	106

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\16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe
"C:\Users\Admin\AppData\Local\Temp\16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3704
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe
  2⤵
  PID:5068
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks.exe /Create /TN "\RuntimeUpdateTaskMachineCore" /TR "%LOCALAPPDATA%\WMI\RuntimeBroker64.exe" /SC MINUTE /MO 10 /RL HIGHEST /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5136
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks.exe /Create /TN "\SysUpdateTaskMachineCore" /TR "%LOCALAPPDATA%\System\RuntimeBroker64.exe" /SC MINUTE /MO 10 /RL HIGHEST /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5564
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks.exe /run /TN "\RuntimeUpdateTaskMachineCore"
  2⤵
  PID:4056

C:\Users\Admin\AppData\Local\WMI\RuntimeBroker64.exe
"C:\Users\Admin\AppData\Local\WMI\RuntimeBroker64.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe
  2⤵
  PID:2104

C:\Users\Admin\AppData\Local\WMI\RuntimeBroker64.exe
C:\Users\Admin\AppData\Local\WMI\RuntimeBroker64.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:960
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe
  2⤵
  PID:4524

C:\Users\Admin\AppData\Local\System\RuntimeBroker64.exe
C:\Users\Admin\AppData\Local\System\RuntimeBroker64.exe
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe
  2⤵
  PID:5920

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

RuntimeBroker64.exe

Path C:\Users\Admin\AppData\Local\WMI\RuntimeBroker64.exe
Size 4.1MB
SHA256 16b655a9a39acb43e4dcb5e384b2dff66dc0c774a58d8714598b313fe1264c9c
MD5 e4c7541b94ae14e15b8b6155a5318fb5
SHA1 c3e0bf86c16bdeb168478df2232c8e81df25ce14
SHA512 d96ef8013262141325349a98decc94ac55c9cd6f137b2a603187df158facc3a717a11f99ca05bb9e57726c9704568ee4724cc83a488075f7d71ba73b9be5567d
SSDEEP 98304:X5TJAsm3rq818mVc+GfhGlrbwkhtnVuMjA0C:ZqBbq818mC+GftytVu
TLSH
T1F8161265E8DA40ECC817E1FD9BDA9E76EC7730550F2457EB83F053392A228E4CEA6101
MD5 SHA1 SHA512 SSDEEP TLSH