Malware Analysis Report

2024-12-07 22:36

Sample ID 240720-shseya1gmr
Target OTOTjU.rar
SHA256 48f21c28de9fa584e101c2bce41bbe66740530d053a82fa5dd52146696613313
Tags
remcos junio2024 persistence privilege_escalation 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

48f21c28de9fa584e101c2bce41bbe66740530d053a82fa5dd52146696613313

Threat Level: Known bad

The file OTOTjU.rar was found to be: Known bad.

Malicious Activity Summary

remcos junio2024 persistence privilege_escalation rat

Remcos

Adds Run key to start application

Event Triggered Execution: Netsh Helper DLL

Unsigned PE

Runs regedit.exe

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-20 15:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-20 15:07

Reported

2024-07-20 15:15

Platform

win7-20240705-en

Max time kernel

360s

Max time network

317s

Command Line

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

Signatures

Runs regedit.exe

Description Indicator Process Target
N/A N/A C:\Windows\regedit.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\regedit.exe N/A

Processes

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

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

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Windows\regedit.exe

"C:\Windows\regedit.exe"

Network

N/A

Files

memory/1252-1-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/1252-0-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/1252-9-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/1252-8-0x0000000000945000-0x0000000000986000-memory.dmp

memory/1252-7-0x0000000000940000-0x0000000000945000-memory.dmp

memory/1252-6-0x000000000093D000-0x0000000000945000-memory.dmp

memory/1252-5-0x0000000000938000-0x000000000093C000-memory.dmp

memory/1252-4-0x0000000000935000-0x000000000093C000-memory.dmp

memory/1252-3-0x000000000092E000-0x0000000000936000-memory.dmp

memory/1252-2-0x0000000000407000-0x0000000000421000-memory.dmp

memory/1252-10-0x0000000000400000-0x00000000009AD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-20 15:07

Reported

2024-07-20 15:14

Platform

win10v2004-20240709-en

Max time kernel

303s

Max time network

306s

Command Line

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

Signatures

Remcos

rat remcos

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nooooo = "C:\\Users\\Admin\\Documents\\MOTOTOTO\\OTOTjU.exe" C:\Users\Admin\AppData\Local\Temp\OTOTjU.exe N/A

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\regedit.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\regedit.exe N/A

Runs regedit.exe

Description Indicator Process Target
N/A N/A C:\Windows\regedit.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

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

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

C:\Windows\regedit.exe

"C:\Windows\regedit.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 hotsdefender.webredirect.org udp
UA 5.34.182.173:2404 hotsdefender.webredirect.org tcp
US 8.8.8.8:53 173.182.34.5.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 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.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
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/3256-1-0x0000000000407000-0x0000000000421000-memory.dmp

memory/3256-0-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/3256-2-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/3256-4-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/3256-3-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/2308-5-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-7-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-6-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/3256-8-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/2308-13-0x0000000000400000-0x00000000009AD000-memory.dmp

memory/2308-12-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-9-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-14-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-15-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-16-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-17-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-19-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-22-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-23-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-24-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-25-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-26-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-30-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-31-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-38-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-39-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-46-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-47-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-48-0x00000000000C0000-0x0000000000142000-memory.dmp

memory/2308-49-0x00000000000C0000-0x0000000000142000-memory.dmp