Malware Analysis Report

2024-12-07 22:18

Sample ID 240812-ee9cdsycjb
Target sigma.exe
SHA256 3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106
Tags
remotehost remcos discovery
score
10/10

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 Overview

score
10/10

SHA256

3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106

Threat Level: Known bad

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

Malicious Activity Summary

remotehost remcos discovery

Remcos family

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-12 03:52

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-12 03:52

Reported

2024-08-12 03:55

Platform

win11-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

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

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\sigma.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

N/A