Malware Analysis Report

2025-08-06 02:47

Sample ID 241031-d3j7qszpfp
Target ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf
SHA256 ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf
Tags
defense_evasion discovery persistence upx
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

ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf

Threat Level: Shows suspicious behavior

The file ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf was found to be: Shows suspicious behavior.

Malicious Activity Summary

defense_evasion discovery persistence upx

Deletes itself

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Indicator Removal: File Deletion

Adds Run key to start application

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-31 03:31

Signatures

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-31 03:31

Reported

2024-10-31 03:34

Platform

win7-20241010-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe"

Signatures

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\Update\wuauclt.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe N/A

Indicator Removal: File Deletion

defense_evasion

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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Update\wuauclt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe

"C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp

Files

memory/2604-0-0x0000000000C70000-0x0000000000C98000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 a8b494d93b31fa0abdd6ba0bffafcf6d
SHA1 c1147384ff61ea75aaba1a892dc81562f60211ef
SHA256 34f32bfe94c7648d5e30ef9ca2811584514330b7ada1b5c0899a6734f443c417
SHA512 f15a14aa8f0f2b9dfc21ce08dfeda9b6b8249057f88569a51fe7b63ac720bbd0bc4e89101ed2d5fba1a3b1ad9f41bd189dbc33281b8d1baa1d3fc333c3e76c8c

memory/1080-7-0x0000000000C30000-0x0000000000C58000-memory.dmp

memory/2604-6-0x0000000000C30000-0x0000000000C58000-memory.dmp

memory/2604-8-0x0000000000C70000-0x0000000000C98000-memory.dmp

memory/2604-9-0x0000000000C30000-0x0000000000C58000-memory.dmp

memory/2604-10-0x0000000000C70000-0x0000000000C98000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-31 03:31

Reported

2024-10-31 03:34

Platform

win10v2004-20241007-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Update\wuauclt.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe N/A

Indicator Removal: File Deletion

defense_evasion

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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Update\wuauclt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe

"C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\ac450bd1a101625b820e73a90f7f2e96c7688020620167fa4ac390934f4c4abf.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

memory/4464-0-0x0000000000A30000-0x0000000000A58000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 3a20c49ed4fc181b3e92dbedd6fccf8e
SHA1 c0b688ea9d1fede184acaf7260fdc89f193fe04d
SHA256 dab9dbcaf59774af9f1e073eb10b44a9a6ddd0c4afcdab6cb8987a097bddc42e
SHA512 044d3b73023248a90f8dd82eabd6259ab4f0ed6376e98dc0906b92e4c40284a0f6eec06c5e1239aad418251738caab7995f341235f5d57b5637381bfbd27017a

memory/1008-5-0x0000000000420000-0x0000000000448000-memory.dmp

memory/4464-6-0x0000000000A30000-0x0000000000A58000-memory.dmp

memory/1008-7-0x0000000000420000-0x0000000000448000-memory.dmp

memory/4464-8-0x0000000000A30000-0x0000000000A58000-memory.dmp