Malware Analysis Report

2025-03-14 22:26

Sample ID 240407-251jhahe36
Target 8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608
SHA256 8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608
Tags
persistence upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608

Threat Level: Known bad

The file 8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608 was found to be: Known bad.

Malicious Activity Summary

persistence upx

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Loads dropped DLL

UPX packed file

Deletes itself

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 23:10

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 23:10

Reported

2024-04-07 23:13

Platform

win10v2004-20240319-en

Max time kernel

147s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"

Signatures

UPX dump on OEP (original entry point)

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Graphics\guifx.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Graphics = "\"C:\\ProgramData\\Graphics\\guifx.exe\" /run" C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe

"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"

C:\ProgramData\Graphics\guifx.exe

"C:\ProgramData\Graphics\guifx.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe" >> NUL

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4024 --field-trial-handle=2228,i,8155065313278028490,17854605419281052753,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
KR 165.194.123.67:443 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
NL 142.250.179.202:443 tcp
IE 94.245.104.56:443 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 154.173.246.72.in-addr.arpa udp
GB 51.140.242.104:443 tcp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
GB 51.140.244.186:443 tcp
US 8.8.8.8:53 121.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 208.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
KR 165.194.123.67:443 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 12.173.189.20.in-addr.arpa udp

Files

memory/2788-0-0x0000000000870000-0x000000000088A000-memory.dmp

C:\ProgramData\Graphics\guifx.exe

MD5 5c25cba1c0bdb5737c5d5350aedfe706
SHA1 df7932cc4f31ad0b1256ea5b72195c76cbec7294
SHA256 59d465a871ac3379ee93be30c489eb3622ab128c186a89429a1393608ee1aea3
SHA512 823b3ddccd57d8fa41f27460b1bd7229a23020fa83406b00c0cdb219871d8a81a0ea8bd9cce4029a8437a3f355270729f8ada91d525fc4c790d65cb345bf6e3d

memory/392-4-0x0000000000500000-0x000000000051A000-memory.dmp

memory/2788-6-0x0000000000870000-0x000000000088A000-memory.dmp

memory/392-7-0x0000000000500000-0x000000000051A000-memory.dmp

memory/2788-12-0x0000000000870000-0x000000000088A000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 23:10

Reported

2024-04-07 23:13

Platform

win7-20240221-en

Max time kernel

140s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"

Signatures

UPX dump on OEP (original entry point)

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

Deletes itself

Description Indicator Process Target
N/A N/A C:\windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Graphics\guifx.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Graphics = "\"C:\\ProgramData\\Graphics\\guifx.exe\" /run" C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe

"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"

C:\ProgramData\Graphics\guifx.exe

"C:\ProgramData\Graphics\guifx.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe" >> NUL

Network

Country Destination Domain Proto
KR 165.194.123.67:443 tcp
KR 165.194.123.67:443 tcp

Files

memory/2160-0-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

\ProgramData\Graphics\guifx.exe

MD5 c8771bd3805e4aef7c95f0af7cb1fe09
SHA1 60424b614a3f96709e67cdcfad1d5fcf44f0624d
SHA256 1be3f548c1ba4cf6c86c24f683ff91e3720d602842672efcfed191b8dcd3303c
SHA512 58933dce66dd1807f7d436855a5b004678fc835fc4b5c00fc2e24e6ef627b1751da9a22c817f3ce281b1e1c6a30a4cd69b4782d1e09cd5525056f95cd24364b2

memory/2292-6-0x0000000000E80000-0x0000000000E9A000-memory.dmp

memory/2160-7-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

memory/2292-8-0x0000000000E80000-0x0000000000E9A000-memory.dmp

memory/2160-11-0x0000000000E80000-0x0000000000E9A000-memory.dmp

memory/2160-14-0x0000000000FB0000-0x0000000000FCA000-memory.dmp