Malware Analysis Report

2025-01-02 03:18

Sample ID 240329-2qba3abe9t
Target remcos_agent.exe
SHA256 d77a6dbe3410c7e968b9403d5186cb7836c23340672a6428996ab873652fecbb
Tags
remotehost remcos
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d77a6dbe3410c7e968b9403d5186cb7836c23340672a6428996ab873652fecbb

Threat Level: Known bad

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

Malicious Activity Summary

remotehost remcos

Remcos family

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-29 22:46

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-29 22:46

Reported

2024-03-29 22:49

Platform

win7-20240221-en

Max time kernel

121s

Max time network

121s

Command Line

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

Signatures

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-29 22:46

Reported

2024-03-29 22:49

Platform

win10v2004-20231215-en

Max time kernel

148s

Max time network

123s

Command Line

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

Signatures

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 127.0.0.1:2404 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 40.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.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
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
N/A 127.0.0.1:2404 tcp
NL 52.142.223.178:80 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
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
N/A 127.0.0.1:2404 tcp
US 8.8.8.8:53 45.56.20.217.in-addr.arpa udp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
US 8.8.8.8:53 41.134.221.88.in-addr.arpa udp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp
N/A 127.0.0.1:2404 tcp

Files

N/A