Malware Analysis Report

2025-03-14 23:42

Sample ID 240407-xdmfcabc7v
Target 12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26
SHA256 12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26
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

12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26

Threat Level: Likely malicious

The file 12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26 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

2024-04-07 18:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 18:44

Reported

2024-04-07 18:46

Platform

win7-20240221-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.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\gjsfhjk.exe C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe N/A
File created C:\PROGRA~3\Mozilla\eurgebe.dll C:\PROGRA~3\Mozilla\gjsfhjk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2624 wrote to memory of 2304 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2624 wrote to memory of 2304 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2624 wrote to memory of 2304 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2624 wrote to memory of 2304 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe

"C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {6822F5DC-3970-4455-A0A4-302D5543153A} 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/2212-2-0x0000000000400000-0x0000000000465000-memory.dmp

memory/2212-1-0x0000000000400000-0x0000000000465000-memory.dmp

memory/2212-0-0x0000000000400000-0x0000000000465000-memory.dmp

memory/2212-5-0x0000000000320000-0x0000000000321000-memory.dmp

memory/2212-7-0x0000000000400000-0x0000000000465000-memory.dmp

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

MD5 4ff187bd0be137f7b288ea29484a9c99
SHA1 572abd3b0eac63118e1667d9535021f187a738d8
SHA256 a581a17ae6b14b61eb7b8fe4117c9ff66e03122f47ac5b3228d51606e4433533
SHA512 bab14a1f3865f11912662b3c56b43c04af6195031ad67e92b1b4d7495c6e89a7d87b94ae57929a06347fc06011c7fd179d66b802aac1b08d96e5f4b504369cd9

memory/2304-10-0x0000000000400000-0x0000000000465000-memory.dmp

memory/2304-16-0x0000000000400000-0x0000000000465000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:44

Reported

2024-04-07 18:46

Platform

win10v2004-20231215-en

Max time kernel

92s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\frviiqj.exe C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe N/A
File created C:\PROGRA~3\Mozilla\sjqrgse.dll C:\PROGRA~3\Mozilla\frviiqj.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe

"C:\Users\Admin\AppData\Local\Temp\12321f6d370d04a063b5ad5409373134b655cfa1055442af878cd9edcd8fbd26.exe"

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

C:\PROGRA~3\Mozilla\frviiqj.exe -myayasb

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 99.56.20.217.in-addr.arpa udp

Files

memory/4796-1-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4796-0-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4796-2-0x00000000001E0000-0x00000000001E1000-memory.dmp

memory/4796-3-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4796-9-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4944-10-0x0000000000400000-0x0000000000465000-memory.dmp

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

MD5 6ab6e181f87fb5df54a5a182c80f8aa6
SHA1 66b01b1fdab24756aea376a9b7e2f1556bff6802
SHA256 394a50ef4bdc2250948e1b39e2361a14019be3b7c87e173f07bfe2e5a19220ed
SHA512 350a0f592904c9bd34bfa39b03a10e77ded41ff41a02ea2a0d2b62651ab33faf6fcf9a3a8af7b13cd6b5653065052405799f304630f47e114191b176d8495f0d

memory/4944-11-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4944-12-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4944-16-0x0000000000400000-0x0000000000465000-memory.dmp