Malware Analysis Report

2025-04-14 03:24

Sample ID 240612-skx37szbqc
Target Feather Calculator.application
SHA256 1d1a3c9b4ace7d03691a6b3adfd376de6a28b3df1ae1b0e29c108df4e02dcc87
Tags
score
1/10

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
1/10

SHA256

1d1a3c9b4ace7d03691a6b3adfd376de6a28b3df1ae1b0e29c108df4e02dcc87

Threat Level: No (potentially) malicious behavior was detected

The file Feather Calculator.application was found to be: No (potentially) malicious behavior was detected.

Malicious Activity Summary


Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-12 15:11

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 15:11

Reported

2024-06-12 15:14

Platform

win7-20231129-en

Max time kernel

118s

Max time network

119s

Command Line

rundll32.exe dfshim.dll,ShOpenVerbApplication "C:\Users\Admin\AppData\Local\Temp\Feather Calculator.application"

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe dfshim.dll,ShOpenVerbApplication "C:\Users\Admin\AppData\Local\Temp\Feather Calculator.application"

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe

"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe"

Network

N/A

Files

memory/2428-0-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

memory/2428-1-0x0000000001040000-0x0000000001048000-memory.dmp

memory/2428-3-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

memory/2428-5-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

memory/2428-6-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 15:11

Reported

2024-06-12 15:14

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\dfshim.dll",ShOpenVerbApplication "C:\Users\Admin\AppData\Local\Temp\Feather Calculator.application"

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1924 wrote to memory of 4772 N/A C:\Windows\System32\rundll32.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe
PID 1924 wrote to memory of 4772 N/A C:\Windows\System32\rundll32.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe

Processes

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" "C:\Windows\System32\dfshim.dll",ShOpenVerbApplication "C:\Users\Admin\AppData\Local\Temp\Feather Calculator.application"

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe

"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/4772-0-0x000001EF65930000-0x000001EF65938000-memory.dmp

memory/4772-1-0x00007FFEF8BF3000-0x00007FFEF8BF5000-memory.dmp

memory/4772-2-0x000001EF7FFA0000-0x000001EF80126000-memory.dmp

memory/4772-4-0x00007FFEF8BF0000-0x00007FFEF96B1000-memory.dmp

memory/4772-5-0x00007FFEF8BF0000-0x00007FFEF96B1000-memory.dmp

memory/4772-7-0x00007FFEF8BF0000-0x00007FFEF96B1000-memory.dmp