Malware Analysis Report

2025-08-05 16:42

Sample ID 240204-zjfk4aacg6
Target 901cd797547183322696906c2f8ca47c
SHA256 88c3d9d1d90f81919ae1a60cb1f2da96883ae81138b46ffd4a855a9b348ffe41
Tags
upx adware stealer
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

88c3d9d1d90f81919ae1a60cb1f2da96883ae81138b46ffd4a855a9b348ffe41

Threat Level: Shows suspicious behavior

The file 901cd797547183322696906c2f8ca47c was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx adware stealer

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-04 20:44

Signatures

ACProtect 1.3x - 1.4x DLL software

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: behavioral1

Detonation Overview

Submitted

2024-02-04 20:44

Reported

2024-02-04 20:47

Platform

win7-20231215-en

Max time kernel

122s

Max time network

126s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

Signatures

UPX packed file

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

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2E033C87-D0B2-4CB5-9FE5-DB6378E4C40F} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E033C87-D0B2-4CB5-9FE5-DB6378E4C40F}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E033C87-D0B2-4CB5-9FE5-DB6378E4C40F} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E033C87-D0B2-4CB5-9FE5-DB6378E4C40F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\901cd797547183322696906c2f8ca47c.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E033C87-D0B2-4CB5-9FE5-DB6378E4C40F}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1572 wrote to memory of 2148 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

Network

N/A

Files

memory/2148-0-0x0000000000270000-0x00000000002AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-04 20:44

Reported

2024-02-04 20:47

Platform

win10v2004-20231222-en

Max time kernel

144s

Max time network

149s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

Signatures

UPX packed file

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

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0EF1A348-A9DC-4443-901D-7B998979B4B2} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0EF1A348-A9DC-4443-901D-7B998979B4B2}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0EF1A348-A9DC-4443-901D-7B998979B4B2}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0EF1A348-A9DC-4443-901D-7B998979B4B2} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0EF1A348-A9DC-4443-901D-7B998979B4B2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\901cd797547183322696906c2f8ca47c.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2400 wrote to memory of 5020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2400 wrote to memory of 5020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2400 wrote to memory of 5020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\901cd797547183322696906c2f8ca47c.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 23.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 205.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

memory/5020-0-0x0000000001F00000-0x0000000001F3F000-memory.dmp

memory/5020-1-0x0000000001F00000-0x0000000001F3F000-memory.dmp