Malware Analysis Report

2025-03-14 22:35

Sample ID 240406-1tzmdscg95
Target 6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51
SHA256 6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51
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

6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51

Threat Level: Likely malicious

The file 6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51 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

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 21:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 21:57

Reported

2024-04-06 22:00

Platform

win7-20240221-en

Max time kernel

122s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\ujnwrxk.exe C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe N/A
File created C:\PROGRA~3\Mozilla\klvnttl.dll C:\PROGRA~3\Mozilla\ujnwrxk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2856 wrote to memory of 1640 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\ujnwrxk.exe
PID 2856 wrote to memory of 1640 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\ujnwrxk.exe
PID 2856 wrote to memory of 1640 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\ujnwrxk.exe
PID 2856 wrote to memory of 1640 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\ujnwrxk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe

"C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {67F95082-B5F0-4313-8350-61E5D3277E9C} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\ujnwrxk.exe -eagoxym

Network

N/A

Files

memory/1968-0-0x0000000000400000-0x0000000000422000-memory.dmp

memory/1968-1-0x00000000002F0000-0x000000000034B000-memory.dmp

memory/1968-7-0x0000000000400000-0x0000000000422000-memory.dmp

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

MD5 92bcb0fc24124dc7fbd340c4c4562c28
SHA1 7115d8a8f611d0a8e792f29ad7c39471c2b2678a
SHA256 f792d0038de8f5549d215dbd5ceb70cae01b24119fc7e0c83d2bd9d08b37073f
SHA512 b5c645f2dd0f0d7e04132f2854b0d9c5522d97d67267374288023c68200b5f440d32589b06a96d919bba32c87edc0f3d602aec5fd7b6d6bfd0e757750ef2b290

memory/1640-14-0x0000000000400000-0x0000000000422000-memory.dmp

memory/1640-15-0x00000000001E0000-0x000000000023B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 21:57

Reported

2024-04-06 21:59

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\zonasdl.exe C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe N/A
File created C:\PROGRA~3\Mozilla\eggeazi.dll C:\PROGRA~3\Mozilla\zonasdl.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe

"C:\Users\Admin\AppData\Local\Temp\6a3f3d12317a00d68cdd147169dcac20644e9b0fec3252efc0cb9f0fc02e4a51.exe"

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

C:\PROGRA~3\Mozilla\zonasdl.exe -ufdnlxl

Network

Country Destination Domain Proto
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/1020-0-0x0000000000400000-0x0000000000422000-memory.dmp

memory/1020-1-0x0000000000710000-0x000000000076B000-memory.dmp

C:\ProgramData\Mozilla\zonasdl.exe

MD5 960ddb8f6100104855adcef9abacb781
SHA1 41a9eff6f6bd86b24828c4fd5a730270bd47561f
SHA256 3eb233bd32a7817ce546b3e7fa4914298cc93c3dd9795d2f8a6907c97b4ff1d0
SHA512 8933a3f51e4717c4e5377ac8eef5388d63497e07ae1a5eb07eb3638ac1e5a01913836a81d476207b7fb1ca820698e48167b14a7bd4662e9f3ca0f97e6bc6144e

memory/4040-9-0x0000000000400000-0x0000000000422000-memory.dmp

memory/1020-10-0x0000000000400000-0x0000000000422000-memory.dmp

memory/4040-11-0x0000000000B70000-0x0000000000BCB000-memory.dmp

memory/4040-17-0x0000000000400000-0x0000000000422000-memory.dmp