Malware Analysis Report

2025-01-02 03:10

Sample ID 240816-anerxstgnd
Target dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252
SHA256 dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252
Tags
remcos remotehost discovery rat
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

dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252

Threat Level: Known bad

The file dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat

Remcos

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 00:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 00:21

Reported

2024-08-16 00:23

Platform

win7-20240704-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe"

Signatures

Remcos

rat remcos

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\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe

"C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 legacyrem.duckdns.org udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 legacyrem.duckdns.org udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 legacyrem.duckdns.org udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp

Files

memory/1948-0-0x0000000000590000-0x0000000000615000-memory.dmp

memory/1948-1-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-2-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-6-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-5-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-7-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-8-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-10-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-15-0x0000000000590000-0x0000000000615000-memory.dmp

memory/1948-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-24-0x0000000000400000-0x0000000000482000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 4557392effe484b0f62b91c2bc33d49a
SHA1 de85e2433bb573fa4e7547b73c0655d65991ffe4
SHA256 3984833db3838497113d85d627bb16da95dd31dac8e4d1c459bb1e0fe3375dc8
SHA512 4e5b0e2d3af3ec7ae1d755e57173ac3de8d6bb5aa4babd8809aa76901559f66eb11b307b5488d798682e9b1fbb66eb221fcc77638f762a4a08329d693b47c835

memory/1948-26-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-49-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-52-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-53-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-56-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-60-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-61-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-62-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-64-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-66-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-67-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-69-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-70-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-73-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-75-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-77-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1948-78-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 00:21

Reported

2024-08-16 00:23

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe"

Signatures

Remcos

rat remcos

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\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe

"C:\Users\Admin\AppData\Local\Temp\dddb2e635d9a3ce92621bc6f28d22827cdf80b4f9602d4c553ee0ef149469252.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4348,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8

Network

Country Destination Domain Proto
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 legacyrem.duckdns.org udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 legacyrem.duckdns.org udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 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
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
US 8.8.8.8:53 legacyrem.duckdns.org udp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp
N/A 127.0.0.1:59089 tcp
MY 103.186.116.130:59089 legacyrem.duckdns.org tcp

Files

memory/1392-0-0x0000000000590000-0x0000000000615000-memory.dmp

memory/1392-1-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-3-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-5-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-6-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-7-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-8-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-10-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-11-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-13-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-12-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-15-0x0000000000590000-0x0000000000615000-memory.dmp

memory/1392-16-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-18-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-21-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-22-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-23-0x00000000004D0000-0x0000000000552000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 98de42b20433a306a01afcd3007ac110
SHA1 c4b98a574b6e2a42782743ae4409c10b81b02d6f
SHA256 8282542bd0c089229ba2abc0dcbc4102a67e9d923a69b3216603a5dc02fb239c
SHA512 beb79e7f641b9b3c9b6a23d36db39d6ed8d23f552798064df4e940754412c8b10a5d109bf3fa23f79d8f8cb44ee5c9dce1d28933c0aad1d3c8a028a83ddf9bef

memory/1392-25-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-26-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-28-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-27-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-31-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-32-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-34-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-35-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-36-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-37-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-40-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-41-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-42-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-44-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-45-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-46-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-49-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-50-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-51-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-52-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-54-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-55-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-57-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-58-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-61-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-63-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-65-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-66-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-68-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-69-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-70-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-71-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-75-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-76-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-79-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-80-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-82-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-83-0x00000000004D0000-0x0000000000552000-memory.dmp

memory/1392-85-0x00000000004D0000-0x0000000000552000-memory.dmp