Malware Analysis Report

2024-12-07 22:26

Sample ID 240407-bwrl5ahc6v
Target 8a8291aa1f1744763e496b5a609d766b.bin
SHA256 128a52ddafb45a999c79c06e774d5dceac978bf408829026ff10c88f410570a6
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

128a52ddafb45a999c79c06e774d5dceac978bf408829026ff10c88f410570a6

Threat Level: Known bad

The file 8a8291aa1f1744763e496b5a609d766b.bin was found to be: Known bad.

Malicious Activity Summary

remotehost remcos

Remcos family

Unsigned PE

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-07 01:29

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 01:29

Reported

2024-04-07 01:32

Platform

win7-20240221-en

Max time kernel

147s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe"

Signatures

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe

"C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rxmz.duckdns.org udp
US 89.117.23.22:57833 rxmz.duckdns.org tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

C:\ProgramData\remcos\logs.dat

MD5 54d64b1645f7bc55c38c5438396a8cfe
SHA1 037b8536add2849a7fed2a5f5654e4f47075864e
SHA256 2ec378181b6127fc085789ca83c84a3d618a68e0f098388bef026c30dba45284
SHA512 ce8e8428a1fe87a8cefc0fc3f1a6bfd6293f05f0fd978f72769eb647105716cbef6a04df1c13b7935317d8296808e6e6b3dc22c91fc8353e3e21d722b1421cab

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 01:29

Reported

2024-04-07 01:32

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe"

Signatures

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe

"C:\Users\Admin\AppData\Local\Temp\2d35feecb9b427d2f48f6fd0dd5ef71eb7ba75fe024d7c6f9067490bbabc3c17.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rxmz.duckdns.org udp
US 89.117.23.22:57833 rxmz.duckdns.org tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 22.23.117.89.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp

Files

C:\ProgramData\remcos\logs.dat

MD5 d4d8df4248d82f27212300dd0be6aee7
SHA1 ff6601c63380dec212688f5d778478b0377dc511
SHA256 6201fb8febb15e200de8a1fd9e7a42219625cf3118328ada0efe5349f0504cd3
SHA512 49c7a9b0546fb8c57b6751a4332dd90b54196059822c826d290865c51a7e2d5efdbff86d3f6d36432fd6bc1b94477bbfeae3e32d1cf0be6ee4cd54d634e64b91