f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b

Analysis

max time kernel
149s
max time network
156s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
01/06/2026, 22:52

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General

Target
f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe
Size 316KB
Sample260601-2tpb4ah17j
SHA256 f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b
MD5 002ece9c7805fbb32cc338517afe4e4c
SHA1 0215bfff26e2ac4756426c57e303fa668b3d7bae
SHA512 08e1ffeaee316e621d9eb0bf3bf8512820c2459131f60c09d7a8130bce41567acc4bf24b100e624f56906fabb271914c9c4d765a66bcad1f74c2bbe2c1e65e26
SSDEEP 6144:fQ8OyYvc36AVuc7DQd/5zlgBR4JDoye2bSi1rg:fj16Qu15yBRCDb11rg
TLSH
T1B8648D5AF3A814F9F977923CC8529507E772BC160760D78F27A0466A3F236A09D3E721
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4260	apprt6c3b.exe
3944	apprt6c3b.exe
2560	svc6c3b.exe
1160	svc6c3b.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1679180529-4058988202-686829476-1000\Software\Microsoft\Windows\CurrentVersion\Run\AppRt6c3b = "C:\\Users\\Admin\\AppData\\Local\\AppRt6c3b\\apprt6c3b.exe"	f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1679180529-4058988202-686829476-1000\Software\Microsoft\Windows\CurrentVersion\Run\AppSvc6c3b = "C:\\Users\\Admin\\AppData\\Local\\Programs\\6c3b\\svc6c3b.exe"	apprt6c3b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5304	f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe
5304	f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe
4260	apprt6c3b.exe
4260	apprt6c3b.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5304 wrote to memory of 4260	5304	f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe	89
PID 4260 wrote to memory of 2560	4260	apprt6c3b.exe	93

C:\Users\Admin\AppData\Local\Temp\f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe
"C:\Users\Admin\AppData\Local\Temp\f1b43f10d7144c0557aa9ea569ea86ef385c90a4a8aeb21cb60b57a1213f1b8b.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5304
- C:\Users\Admin\AppData\Local\AppRt6c3b\apprt6c3b.exe
  "C:\Users\Admin\AppData\Local\AppRt6c3b\apprt6c3b.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4260
- - C:\Users\Admin\AppData\Local\Programs\6c3b\svc6c3b.exe
    "C:\Users\Admin\AppData\Local\Programs\6c3b\svc6c3b.exe"
    3⤵
    - Executes dropped EXE
    PID:2560

C:\Users\Admin\AppData\Local\AppRt6c3b\apprt6c3b.exe
C:\Users\Admin\AppData\Local\AppRt6c3b\apprt6c3b.exe
1⤵
- Executes dropped EXE
PID:3944

C:\Users\Admin\AppData\Local\Programs\6c3b\svc6c3b.exe
C:\Users\Admin\AppData\Local\Programs\6c3b\svc6c3b.exe
1⤵
- Executes dropped EXE
PID:1160

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

apprt6c3b.exe

Path C:\Users\Admin\AppData\Local\AppRt6c3b\apprt6c3b.exe
Size 316KB
SHA256 25cabb0e344c55bc915cc1fc694bcf5dba2c91e62341b6a3a51507c269adef33
MD5 e4802362e2d10af2d4fcbe797c9e8918
SHA1 dc5738df879c9da1e6959c7f47f0632493cee06b
SHA512 69051eb56c54653ba022a1ec83be6a908b3c837424409617883dd98d212d1893e93a58d116dbc29d055d03504af85b5f8f4e7a9f65782bf4fcfe6bac6e887dcd
SSDEEP 6144:MQ8OyYvc36AVuc7DQd/5zlgBR4JDaye3bSuWaFrZ:Mj16Qu15yBRCDJGWaFrZ
TLSH
T1F8648D5AF3A814F9F977923CC8529507E772BC160760D78F27A0466A3F236A09D3E721
MD5 SHA1 SHA512 SSDEEP TLSH

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svc6c3b.exe

Path C:\Users\Admin\AppData\Local\Programs\6c3b\svc6c3b.exe
Size 317KB
SHA256 0f6ce7bbfc28b1eaf08b2d479c6e5ac406852cb5bd59a904ec751e24e4298b4a
MD5 6c3a57de24ecc3cc60787db707b7b70f
SHA1 2113ebfd1b7d9506c2bb5830a177beea91eb4ae1
SHA512 3a8f72004ecc45c00c1db187f860753e6748179d94224936725bf69974d1fa9c5c0f81341bc47f4bb56617f8d8bceaecf1fd332386cd7b6294439e861fdf61c4
SSDEEP 6144:BQ8OyYvc36AVuc7DQd/5zlgBR4JDvyetbSeJrR:Bj16Qu15yBRCD6oJrR
TLSH
T1A2648D5AF3A804F9F977923CC9529507E772BC160760D78F27A0466A3F236A09D3E721
MD5 SHA1 SHA512 SSDEEP TLSH

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