Malware Analysis Report

2025-03-14 22:57

Sample ID 240406-13mn7ace2x
Target 6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018
SHA256 6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018
Tags
persistence
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018

Threat Level: Likely malicious

The file 6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018 was found to be: Likely malicious.

Malicious Activity Summary

persistence

Modifies AppInit DLL entries

Executes dropped EXE

Drops file in Program Files directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 22:10

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 22:10

Reported

2024-04-06 22:13

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\tbckyxk.exe C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe N/A
File created C:\PROGRA~3\Mozilla\newtrln.dll C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2116 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2116 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2116 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2116 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe

"C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {3ED2D991-848E-479D-BF56-6FBCAEBA318E} S-1-5-18:NT AUTHORITY\System:Service:

C:\PROGRA~3\Mozilla\tbckyxk.exe

C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye

Network

N/A

Files

memory/1932-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/1932-1-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1932-2-0x0000000000270000-0x00000000002CB000-memory.dmp

memory/1932-4-0x0000000000400000-0x000000000045B000-memory.dmp

C:\PROGRA~3\Mozilla\tbckyxk.exe

MD5 d50b2357fb78539f40b1929e245afcc2
SHA1 6e8052f362ee9a6e71828fcf293152144e1a504e
SHA256 25b6dca56babd510db4d46913945915d43a84dbd78a1596c82e8213ad688f3c4
SHA512 48aa8065258a5eea2796c2bb6adc31f8173abdd99e82429c7e5ab023cd82519fc7cc44fef57f593538ccd8671c5ce30f98ea699c28c6fceade7527efcdcfe539

memory/1696-7-0x0000000000400000-0x000000000045E000-memory.dmp

memory/1696-8-0x0000000000330000-0x000000000038B000-memory.dmp

memory/1696-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1696-11-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 22:10

Reported

2024-04-06 22:13

Platform

win10v2004-20240226-en

Max time kernel

93s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\gfuniul.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\gfuniul.exe C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe N/A
File created C:\PROGRA~3\Mozilla\kzlcazd.dll C:\PROGRA~3\Mozilla\gfuniul.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe

"C:\Users\Admin\AppData\Local\Temp\6faf737e7f73a933153215ee35c3a0e26de0fdbfb76470b615240f1ba7f7b018.exe"

C:\PROGRA~3\Mozilla\gfuniul.exe

C:\PROGRA~3\Mozilla\gfuniul.exe -lfdzfzd

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp

Files

memory/4860-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/4860-1-0x00000000021F0000-0x000000000224B000-memory.dmp

memory/4860-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4860-7-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4920-6-0x0000000000400000-0x000000000045E000-memory.dmp

C:\PROGRA~3\Mozilla\gfuniul.exe

MD5 b77dc2bcb2e8882dbd83c31afd2a81e9
SHA1 40acb57e86dc9fe2aeb269eaa5de4e99dd960065
SHA256 a70d18e310394ac54c4d90fe3f9ceb7ea41b3ff561620a8799b70fdc642591a9
SHA512 29d603eb3852ae628b3146c24b3fcc717d5a821983b7d1fd0c2d90204fa5da50d08be6bf85dd350ae7257d930c9e5cc82e91120675ecd95c498fb39e2a68ec13

memory/4920-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4920-9-0x00000000004E0000-0x000000000053B000-memory.dmp

memory/4920-12-0x0000000000400000-0x000000000045B000-memory.dmp