Malware Analysis Report

2025-03-14 23:01

Sample ID 240406-3wwpmafd32
Target a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb
SHA256 a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb
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

a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb

Threat Level: Likely malicious

The file a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb 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 UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 23:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 23:52

Reported

2024-04-06 23:54

Platform

win7-20240221-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\eurgebe.dll C:\PROGRA~3\Mozilla\gjsfhjk.exe N/A
File created C:\PROGRA~3\Mozilla\gjsfhjk.exe C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\gjsfhjk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2780 wrote to memory of 2936 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2780 wrote to memory of 2936 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2780 wrote to memory of 2936 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2780 wrote to memory of 2936 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe

"C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {40FC6E66-4234-49E1-A967-5E3421640F30} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\gjsfhjk.exe -tuxiydl

Network

N/A

Files

memory/1688-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/1688-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1688-1-0x00000000002F0000-0x000000000034B000-memory.dmp

memory/1688-4-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 12a68002e48e9976af8da57f0ec994f7
SHA1 d42b3d1fd1d223c9a2f93a9653afc794feba2a9b
SHA256 ab6b8379c8dfd0a4b74a3bcaa57226cb44efca784a5dd2bf30d27d9f442b955c
SHA512 67f6816f0fc2f8726b466336fb719c28269f718f3b358b5fbe46e5361209f8742f6bdfcf21670f573436152e8f9116969016f4d1d8b38d6ad066d561f14b74e0

memory/2936-7-0x00000000008B0000-0x000000000090B000-memory.dmp

memory/2936-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2936-10-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 23:52

Reported

2024-04-06 23:55

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\fwjctpb.exe C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe N/A
File created C:\PROGRA~3\Mozilla\jqvifpn.dll C:\PROGRA~3\Mozilla\fwjctpb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe

"C:\Users\Admin\AppData\Local\Temp\a053a799541f89b909a2022966ae19839f02f60fd710beb12e65818cde9768eb.exe"

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

C:\PROGRA~3\Mozilla\fwjctpb.exe -qdcpmcc

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp

Files

memory/1712-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/1712-1-0x00000000021E0000-0x000000000223B000-memory.dmp

memory/1712-2-0x0000000000400000-0x000000000045B000-memory.dmp

C:\ProgramData\Mozilla\fwjctpb.exe

MD5 49470fa600494bf44036deca7621809d
SHA1 d0e530505982472748d9c68a646e1b04b2c823aa
SHA256 42b8550a654e4c707fa5888e949be1ffde5508e3656d4b6bffb02063b970b92d
SHA512 abca28a0b1876e4b3855a93f560cb6bbec5f9bd3c19309806ef8fe1812fe3617b3ec0066920595c70355d56e54c3b3d38013d262b5412e24ec3cf8d66daef490

memory/1712-6-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1712-8-0x00000000021E0000-0x000000000223B000-memory.dmp

memory/3020-9-0x0000000000C30000-0x0000000000C8B000-memory.dmp

memory/3020-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/3020-12-0x0000000000400000-0x000000000045B000-memory.dmp