b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7

Analysis

max time kernel
150s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/09/2026, 03:59

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General

Target
b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Size 927KB
Sample260909-ej488s1wfw
SHA256 b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7
MD5 e11a58e8fef83f5dfe0dfef19654456b
SHA1 ce8d8b75a41a8ad3b4027bcb279ca8d7f0e9e568
SHA512 f07076d31d64ec445b036ada8e3b06db887a59651a68c61c4d5cd39e5fa5d8a5c8519b9488bc68c36f8eab88ad07b1ca50a284a1426bdf952801f7f2b4a9e338
SSDEEP 24576:TnvS+55BpfRX95rp/whxtpmS44qYsStBIJ0RD:rKA5/fBjlwhxvmS4SDtBS0RD
TLSH
T14115D019D7E405F9E1B3E574CE834902EB73BC495371D69F03ACA9661F236908E39B22
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
7008	codec_checker.exe

Loads dropped DLL 1 IoCs

pid	Process
7008	codec_checker.exe

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

System Information Discovery
T1082

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A0953C92-50DC-43bf-BE83-3742FED03C9C}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1CF1260C-4DD0-4ebb-811F-33C572699FDE}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{3ADD1653-EB32-4cb0-BBD7-DFA0ABB5ACCA}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{374DE290-123F-4565-9164-39C4925E467B}\Instance\	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 5228 wrote to memory of 7008	5228	b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe	90

C:\Users\Admin\AppData\Local\Temp\b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe
"C:\Users\Admin\AppData\Local\Temp\b6bfa5a66f1cdaf0f60eea689a73cff6ffab42458fb2ed4dd06cde7f8ab245b7.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5228
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\codec_checker.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\codec_checker.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:7008

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

codec_checker.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\codec_checker.exe
Size 294KB
SHA256 a94f403a9dcaa586cea7ffd8dc46166ffed254bca6adc7f8116cb78dfe6813a3
MD5 30fb63db6ee40dcc0bcc0c13b19e6155
SHA1 668f2981036d3d7478602eb003d5e2b19016be41
SHA512 2caebb9f2bacb9acdf9b63c7c9edc92b427a22c9ce9a4e3432daaec7c6d103b4a2b9ded254c65a23d5bd5417ad9573a0650cda50b57888c8e61d5592a0b3653a
SSDEEP 3072:5mNutj+zh/o7jX9IBdwUSueWY8Mj2m0oPudPc6MVJA1idH4wEkoY46A23z+r6MjX:5/U0X94tSueWuzTgioh+KrDMj2
TLSH
T185546C26B3A518F5E967827DCD524502E773B81607B2D6EF03A4836A2F332D05E3E761
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zrtc.dll

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\zrtc.dll
Size 17KB
SHA256 3c7f88078362f77c84ee986f82203720216df92b0ce59cac3de11b21830f806e
MD5 cca04ea77f063985ddcbb4cd66110bad
SHA1 36d0464b9d25c188289c95fd143ac657fbc08d0a
SHA512 503fc67aa96d422bec3a3142244723f5925a9d17260d53a1db49f9ee6f0658165a0d48a2a2dd0a989490c064e30f44171ca8471e2c7370537f0467e16cafa74d
SSDEEP 192:YFndFQgewRfM6mjRoaGOe0cqN75MGn1fZih3V6p2m7lLyD4JZH/zr9n4:YFHXe6ZOe0N75nfZS30p2mZrZrZ
TLSH
T13E721949A7808CD6E815C239C9A39D2ED672B651572297CF53204B3E0E737C1323EBD5
MD5 SHA1 SHA512 SSDEEP TLSH