Malware Analysis Report

2025-01-02 03:06

Sample ID 240815-byfbwasfmk
Target a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
SHA256 a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792

Threat Level: Known bad

The file a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe was found to be: Known bad.

Malicious Activity Summary

remotehost remcos discovery

Remcos family

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-15 01:32

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-15 01:32

Reported

2024-08-15 01:35

Platform

win7-20240705-en

Max time kernel

147s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.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\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe"

Network

Country Destination Domain Proto
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-15 01:32

Reported

2024-08-15 01:35

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.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\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe"

Network

Country Destination Domain Proto
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp

Files

N/A