Malware Analysis Report

2024-11-30 19:21

Sample ID 240306-h84wjsea31
Target b6d90e592d3532767d011392c389ae46
SHA256 3c55294e7636d99fb91c92a7dbfa1f5be3ad0e9774dbdcaca05be1c8f0f786fa
Tags
remcos agilenet rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3c55294e7636d99fb91c92a7dbfa1f5be3ad0e9774dbdcaca05be1c8f0f786fa

Threat Level: Known bad

The file b6d90e592d3532767d011392c389ae46 was found to be: Known bad.

Malicious Activity Summary

remcos agilenet rat

Remcos

Remcos family

Obfuscated with Agile.Net obfuscator

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-06 07:25

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-06 07:25

Reported

2024-03-06 07:27

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe"

Signatures

Remcos

rat remcos

Obfuscated with Agile.Net obfuscator

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe

"C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2708 -ip 2708

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 1236

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 195.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.173.189.20.in-addr.arpa udp

Files

memory/2708-0-0x0000000000CC0000-0x0000000000D30000-memory.dmp

memory/2708-1-0x00000000747B0000-0x0000000074F60000-memory.dmp

memory/2708-2-0x00000000014C0000-0x00000000014D6000-memory.dmp

memory/2708-3-0x0000000005740000-0x0000000005750000-memory.dmp

memory/2708-4-0x00000000064E0000-0x0000000006A84000-memory.dmp

memory/2708-5-0x0000000005730000-0x0000000005738000-memory.dmp

memory/2708-6-0x0000000006030000-0x00000000060C2000-memory.dmp

memory/2708-7-0x00000000747B0000-0x0000000074F60000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-06 07:25

Reported

2024-03-06 07:28

Platform

win7-20240221-en

Max time kernel

121s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe"

Signatures

Remcos

rat remcos

Obfuscated with Agile.Net obfuscator

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe

"C:\Users\Admin\AppData\Local\Temp\b6d90e592d3532767d011392c389ae46.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1988 -s 784

Network

N/A

Files

memory/1988-0-0x0000000000990000-0x0000000000A00000-memory.dmp

memory/1988-1-0x0000000074640000-0x0000000074D2E000-memory.dmp

memory/1988-2-0x0000000000360000-0x0000000000376000-memory.dmp

memory/1988-3-0x00000000004E0000-0x00000000004E8000-memory.dmp

memory/1988-4-0x0000000074640000-0x0000000074D2E000-memory.dmp