Malware Analysis Report

2024-12-01 02:12

Sample ID 241110-bm924swell
Target 12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N
SHA256 12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1
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

12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1

Threat Level: Likely malicious

The file 12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N 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

2024-11-10 01:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:16

Reported

2024-11-10 01:18

Platform

win7-20240903-en

Max time kernel

16s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.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\vuhvodg.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\vuhvodg.exe C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe N/A
File created C:\PROGRA~3\Mozilla\zcwirze.dll C:\PROGRA~3\Mozilla\vuhvodg.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\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\PROGRA~3\Mozilla\vuhvodg.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\vuhvodg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2916 wrote to memory of 2376 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\vuhvodg.exe
PID 2916 wrote to memory of 2376 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\vuhvodg.exe
PID 2916 wrote to memory of 2376 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\vuhvodg.exe
PID 2916 wrote to memory of 2376 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\vuhvodg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe

"C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {6E4BB1C4-971C-4A17-A15C-1EEB794D1E1A} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\vuhvodg.exe -nwlnhvb

Network

N/A

Files

memory/2112-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2112-1-0x0000000000250000-0x00000000002AC000-memory.dmp

memory/2112-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2112-5-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 9d4d340c4a1f94ceb51b54dea4ef9459
SHA1 7c444076a9bc047880df5386d5419d7814626ee9
SHA256 6901e07b2d6233cd35907e0fdfe67c1d08294ee74fa672e4d7e417aa05b0e4c7
SHA512 0b45f5f6697044b597285ce213a0f8ba10466e7b7f9fdd970c32d45e7171b0e953881fc1cd97216feb52aba6e6ad0d9063c018619e3348faa3bb89ec7391a681

memory/2376-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2376-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2376-11-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:16

Reported

2024-11-10 01:18

Platform

win10v2004-20241007-en

Max time kernel

96s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.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\kifkuel.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\kifkuel.exe C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe N/A
File created C:\PROGRA~3\Mozilla\vrazdod.dll C:\PROGRA~3\Mozilla\kifkuel.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\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\PROGRA~3\Mozilla\kifkuel.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe

"C:\Users\Admin\AppData\Local\Temp\12f452f19a0703e9ed33ab76d7ba0286460beeed69ee0042e0ba8b6c2b0f99d1N.exe"

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

C:\PROGRA~3\Mozilla\kifkuel.exe -dljjxbn

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4928-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4928-1-0x00000000020A0000-0x00000000020FC000-memory.dmp

memory/4928-2-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 c8a3049a8ccce0985106360d1c509030
SHA1 5065094e9f28410c00af184eba5b1c826c1f134c
SHA256 350efb90a2130ffe4071b5b5a31bb7442f2e299f958b977a18ca4c46a7f9bbc4
SHA512 fbdf8fb3de9b0e3eefdb4116aaccdefa2ae1098a3bed3259c2cafa864a415ddc291560e530c130437979a13b4c710b5462700827f50c878f346eb1950b0939ce

memory/4928-6-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4928-8-0x00000000020A0000-0x00000000020FC000-memory.dmp

memory/4472-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4472-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4472-12-0x0000000000400000-0x000000000045B000-memory.dmp