Malware Analysis Report

2025-01-02 03:10

Sample ID 240815-qa6w9axdpn
Target f2266f08f4d83c9dd38076e1a6b6b6fe01f0911dc2dc413d62e4555327acbaf6
SHA256 f2266f08f4d83c9dd38076e1a6b6b6fe01f0911dc2dc413d62e4555327acbaf6
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

f2266f08f4d83c9dd38076e1a6b6b6fe01f0911dc2dc413d62e4555327acbaf6

Threat Level: Known bad

The file f2266f08f4d83c9dd38076e1a6b6b6fe01f0911dc2dc413d62e4555327acbaf6 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat

Remcos

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-15 13:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-15 13:04

Reported

2024-08-15 13:07

Platform

win7-20240704-en

Max time kernel

148s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2608 set thread context of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Windows Media Player\wmplayer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 1464 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 2608 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Windows\system32\WerFault.exe
PID 2608 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Windows\system32\WerFault.exe
PID 2608 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe

"C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe"

C:\Program Files (x86)\Windows Media Player\wmplayer.exe

"C:\Program Files (x86)\Windows Media Player\wmplayer.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2608 -s 636

Network

Country Destination Domain Proto
US 8.8.8.8:53 eadzagba1.duckdns.org udp
US 198.46.178.133:4877 eadzagba1.duckdns.org tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2608-0-0x000007FEF62A3000-0x000007FEF62A4000-memory.dmp

memory/2608-1-0x0000000000E40000-0x0000000000E4A000-memory.dmp

memory/2608-2-0x000007FEF62A0000-0x000007FEF6C8C000-memory.dmp

memory/2608-3-0x0000000000A90000-0x0000000000B62000-memory.dmp

memory/1464-6-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-4-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-8-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1464-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-10-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-9-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2608-26-0x000007FEF62A3000-0x000007FEF62A4000-memory.dmp

memory/2608-27-0x000007FEF62A0000-0x000007FEF6C8C000-memory.dmp

memory/1464-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1464-37-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-15 13:04

Reported

2024-08-15 13:07

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2572 set thread context of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3436 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3436 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2572 wrote to memory of 3436 N/A C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe

"C:\Users\Admin\AppData\Local\Temp\Solicitação de Cotação.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 eadzagba1.duckdns.org udp
US 198.46.178.133:4877 eadzagba1.duckdns.org tcp
US 8.8.8.8:53 133.178.46.198.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/2572-0-0x00007FF8ADDF3000-0x00007FF8ADDF5000-memory.dmp

memory/2572-1-0x000001BA29A10000-0x000001BA29A1A000-memory.dmp

memory/2572-2-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

memory/2572-3-0x000001BA44080000-0x000001BA44152000-memory.dmp

memory/3512-4-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2572-5-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp