Malware Analysis Report

2024-12-07 22:18

Sample ID 240812-egz7haycph
Target 3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106

Threat Level: Known bad

The file 3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106 was found to be: Known bad.

Malicious Activity Summary

remotehost remcos discovery

Remcos family

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-12 03:55

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 03:55

Reported

2024-08-12 03:58

Platform

win7-20240708-en

Max time kernel

147s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.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\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe

"C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.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

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-12 03:55

Reported

2024-08-12 03:58

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.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\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe

"C:\Users\Admin\AppData\Local\Temp\3ff8b326998da5191af6560d82d7999a572034a4b0b04d33e499a56951df5106.exe"

Network

Country Destination Domain Proto
N/A 192.168.0.75:139 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
N/A 192.168.0.75:139 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
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 22.236.111.52.in-addr.arpa udp
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
N/A 192.168.0.75:139 tcp
N/A 192.168.0.75:139 tcp

Files

N/A