Malware Analysis Report

2025-08-05 21:21

Sample ID 240305-dkgznadg69
Target b39c81284bef8e074945caf83836dc54
SHA256 b744c6f160c7a79fe1102600e9f08865facff2f46657f68bfe6e61a8b2956e11
Tags
aspackv2 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

b744c6f160c7a79fe1102600e9f08865facff2f46657f68bfe6e61a8b2956e11

Threat Level: Shows suspicious behavior

The file b39c81284bef8e074945caf83836dc54 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 persistence

ASPack v2.12-2.42

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-05 03:03

Signatures

ASPack v2.12-2.42

aspackv2
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

2024-03-05 03:03

Reported

2024-03-05 03:06

Platform

win7-20240215-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\b39c81284bef8e074945caf83836dc54 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b39c81284bef8e074945caf83836dc54.exe" C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\b39c81284bef8e074945caf83836dc54 = "C:\\Windows\\system32\\svchost.scr" C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\svchost.scr C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A
File opened for modification C:\Windows\SysWOW64\svchost.scr C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe

"C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 smtp.terra.com.br udp
US 208.84.244.140:25 smtp.terra.com.br tcp

Files

memory/2984-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2984-1-0x0000000000400000-0x00000000005F5000-memory.dmp

memory/2984-4-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2984-5-0x0000000000400000-0x00000000005F5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 03:03

Reported

2024-03-05 03:06

Platform

win10v2004-20240226-en

Max time kernel

158s

Max time network

165s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b39c81284bef8e074945caf83836dc54 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b39c81284bef8e074945caf83836dc54.exe" C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b39c81284bef8e074945caf83836dc54 = "C:\\Windows\\system32\\svchost.scr" C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\svchost.scr C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A
File opened for modification C:\Windows\SysWOW64\svchost.scr C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe

"C:\Users\Admin\AppData\Local\Temp\b39c81284bef8e074945caf83836dc54.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 smtp.terra.com.br udp
US 208.84.244.140:25 smtp.terra.com.br tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 2.173.189.20.in-addr.arpa udp

Files

memory/1444-0-0x00000000024C0000-0x00000000024C1000-memory.dmp

memory/1444-1-0x0000000000400000-0x00000000005F5000-memory.dmp

memory/1444-4-0x00000000024C0000-0x00000000024C1000-memory.dmp

memory/1444-5-0x0000000000400000-0x00000000005F5000-memory.dmp