Malware Analysis Report

2024-12-01 01:31

Sample ID 241110-br2arswgkd
Target ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N
SHA256 ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016
Tags
discovery persistence
score
7/10

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
7/10

SHA256

ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016

Threat Level: Shows suspicious behavior

The file ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 01:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:23

Reported

2024-11-10 01:25

Platform

win7-20241010-en

Max time kernel

120s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.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\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe

"C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2044-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2536-8-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 1de3941fbd88b8f8ff21ff9993269bf6
SHA1 db51f739c825201becf899834ab2ad73dbf14e37
SHA256 b7a2601b7cfb2499f8ef6197ef73603ad1a6a89b6884375ca63354217ec22bae
SHA512 2258679f9108bd573c529c1302ec0ac7fb3ffba0263a01ee7f72545efc04a7566d0ce0c8a95d940a5bb95a0113f376947cce9692bd56a89e7e9f348d0805c85b

memory/2044-6-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2536-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:23

Reported

2024-11-10 01:25

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.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\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\microsofthelp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe

"C:\Users\Admin\AppData\Local\Temp\ac272d1676605d52500d4b71bbae5d4c9a42b980649e333b8276ef63fd3d4016N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

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 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/5076-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 1de3941fbd88b8f8ff21ff9993269bf6
SHA1 db51f739c825201becf899834ab2ad73dbf14e37
SHA256 b7a2601b7cfb2499f8ef6197ef73603ad1a6a89b6884375ca63354217ec22bae
SHA512 2258679f9108bd573c529c1302ec0ac7fb3ffba0263a01ee7f72545efc04a7566d0ce0c8a95d940a5bb95a0113f376947cce9692bd56a89e7e9f348d0805c85b

memory/5076-5-0x0000000000400000-0x0000000000403000-memory.dmp

memory/4192-6-0x0000000000400000-0x0000000000403000-memory.dmp