Malware Analysis Report

2025-08-11 01:27

Sample ID 240229-cylpbsbc8y
Target aa37a9eb55edc82393ae679ad9d23019.bin
SHA256 1b5168a68da86139bcafdfcb8007f60a66d01d45937e91e17d330fc3536a4a5a
Tags
aspackv2
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

1b5168a68da86139bcafdfcb8007f60a66d01d45937e91e17d330fc3536a4a5a

Threat Level: Shows suspicious behavior

The file aa37a9eb55edc82393ae679ad9d23019.bin was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2

ASPack v2.12-2.42

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-29 02:29

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

2024-02-29 02:29

Reported

2024-02-29 02:31

Platform

win7-20240221-en

Max time kernel

119s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1612 wrote to memory of 2032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

Network

N/A

Files

memory/2032-0-0x00000000006B0000-0x000000000071B000-memory.dmp

memory/2032-1-0x00000000006B0000-0x000000000071B000-memory.dmp

memory/2032-2-0x00000000006B0000-0x000000000071B000-memory.dmp

memory/2032-3-0x0000000000840000-0x000000000089A000-memory.dmp

memory/2032-4-0x0000000000840000-0x000000000089A000-memory.dmp

memory/2032-5-0x0000000003020000-0x0000000003022000-memory.dmp

memory/2032-6-0x0000000000210000-0x0000000000211000-memory.dmp

memory/2032-7-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2032-8-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2032-9-0x0000000003030000-0x0000000003031000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-29 02:29

Reported

2024-02-29 02:31

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4088 wrote to memory of 1872 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4088 wrote to memory of 1872 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4088 wrote to memory of 1872 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa37a9eb55edc82393ae679ad9d23019.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1872-0-0x00000000007B0000-0x000000000081B000-memory.dmp

memory/1872-2-0x0000000002280000-0x00000000022DA000-memory.dmp

memory/1872-1-0x00000000007B0000-0x000000000081B000-memory.dmp

memory/1872-3-0x00000000009C0000-0x00000000009C1000-memory.dmp

memory/1872-5-0x0000000002230000-0x0000000002231000-memory.dmp

memory/1872-4-0x00000000009B0000-0x00000000009B1000-memory.dmp

memory/1872-6-0x00000000023E0000-0x00000000023E1000-memory.dmp

memory/1872-7-0x0000000002260000-0x0000000002261000-memory.dmp

memory/1872-8-0x00000000023F0000-0x00000000023F1000-memory.dmp

memory/1872-9-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-10-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-11-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-12-0x0000000002240000-0x0000000002241000-memory.dmp

memory/1872-13-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-14-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-15-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-17-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-16-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-18-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-19-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-20-0x00000000032A0000-0x00000000032A1000-memory.dmp

memory/1872-21-0x00000000032A0000-0x00000000032A1000-memory.dmp