Malware Analysis Report

2025-01-02 03:16

Sample ID 240401-fnsaxaec2w
Target build.exe
SHA256 c34600ca5a25bce247fc0f968568ebad52c8905d71b88c5cb708dd09d6d8424a
Tags
remcos remotehost rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c34600ca5a25bce247fc0f968568ebad52c8905d71b88c5cb708dd09d6d8424a

Threat Level: Known bad

The file build.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost rat

Remcos

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-01 05:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-01 05:01

Reported

2024-04-01 05:01

Platform

win11-20240221-en

Max time kernel

8s

Max time network

1s

Command Line

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

Signatures

Remcos

rat remcos

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp

Files

memory/400-0-0x0000000000400000-0x00000000007CF000-memory.dmp

memory/400-1-0x00000000022C0000-0x00000000022CA000-memory.dmp

memory/400-3-0x00000000022C0000-0x00000000022CA000-memory.dmp

memory/400-4-0x00000000022E0000-0x00000000022E7000-memory.dmp

memory/400-6-0x00000000022E0000-0x00000000022E7000-memory.dmp

memory/400-8-0x00000000022F0000-0x00000000022F4000-memory.dmp

memory/400-9-0x0000000002300000-0x0000000002318000-memory.dmp

memory/400-7-0x00000000022F0000-0x00000000022F4000-memory.dmp

memory/400-12-0x0000000002300000-0x0000000002318000-memory.dmp

memory/400-13-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-14-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-15-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-16-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-17-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-18-0x0000000003C80000-0x0000000003CF5000-memory.dmp

memory/400-19-0x0000000003C80000-0x0000000003CF5000-memory.dmp