Malware Analysis Report

2025-08-06 02:17

Sample ID 241112-q6zg2ssqa1
Target 40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe
SHA256 40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01
Tags
discovery persistence privilege_escalation
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

40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01

Threat Level: Likely malicious

The file 40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe was found to be: Likely malicious.

Malicious Activity Summary

discovery persistence privilege_escalation

Event Triggered Execution: AppInit DLLs

Executes dropped EXE

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 13:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 13:53

Reported

2024-11-12 13:55

Platform

win7-20240708-en

Max time kernel

31s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe"

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\yofzeuh.exe C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe N/A
File created C:\PROGRA~3\Mozilla\mkkxkvk.dll C:\PROGRA~3\Mozilla\yofzeuh.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\PROGRA~3\Mozilla\yofzeuh.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\yofzeuh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2792 wrote to memory of 2940 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\yofzeuh.exe
PID 2792 wrote to memory of 2940 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\yofzeuh.exe
PID 2792 wrote to memory of 2940 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\yofzeuh.exe
PID 2792 wrote to memory of 2940 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\yofzeuh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe

"C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {5942D638-A7BF-45C9-AF24-5A9427963D56} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\yofzeuh.exe -qmgjyzc

Network

N/A

Files

memory/1508-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1508-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1508-1-0x0000000000250000-0x00000000002AC000-memory.dmp

memory/1508-4-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 6edbd6bc9feead8416e498cafaf01533
SHA1 8f3e7bf3590cbaa3c6755cb6cc7c0b1d0704f7a2
SHA256 ef7d33120d3ed18d02e630d4f3d46f11d6b01f0decad0e75766e37eb29cab96c
SHA512 e3b41e692dbbb35efde767605c70489fb7b2ccc6c57f00f6cd8a514e6d3ef24d3a17aefe31fa576723286c527ae915109fc988e8aa2d77fae6adaf4782832866

memory/2940-7-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2940-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2940-10-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 13:53

Reported

2024-11-12 13:55

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe"

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\oevgipl.exe C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe N/A
File created C:\PROGRA~3\Mozilla\sosyokm.dll C:\PROGRA~3\Mozilla\oevgipl.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\PROGRA~3\Mozilla\oevgipl.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe

"C:\Users\Admin\AppData\Local\Temp\40a8661f26ac2485ad055e05bd6dd6f88a895013818fe4d8743a0304b8a83d01N.exe"

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

C:\PROGRA~3\Mozilla\oevgipl.exe -gsmgbug

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2060-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2060-1-0x0000000002200000-0x000000000225C000-memory.dmp

memory/2060-2-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 20e5011361906bff72ccced15f42fbd2
SHA1 86caa779cf6230fd1695e15b2c593a0c1993cb3b
SHA256 cefed6881321b703ac2eb6f9ed92eda654aaf9c56a58378a5aa0cf320b3cad49
SHA512 a8ddff6f2c487e621b37926a0894bd16f823a7b16a4eccd0cf4deedbb6e7c96895ff903c9078c0989a7bd67eef544a5224d916121b37794aa0f37d36de261441

memory/2060-6-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2060-8-0x0000000002200000-0x000000000225C000-memory.dmp

memory/560-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/560-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/560-12-0x0000000000400000-0x000000000045B000-memory.dmp