Malware Analysis Report

2024-11-16 13:09

Sample ID 220609-f4e1hsada8
Target 15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417
SHA256 15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417
Tags
limerat rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417

Threat Level: Known bad

The file 15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417 was found to be: Known bad.

Malicious Activity Summary

limerat rat

LimeRAT

Drops startup file

Maps connected drives based on registry

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

AutoIT Executable

Suspicious use of SendNotifyMessage

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-06-09 05:25

Signatures

AutoIT Executable

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

Analysis: behavioral1

Detonation Overview

Submitted

2022-06-09 05:25

Reported

2022-06-09 09:59

Platform

win7-20220414-en

Max time kernel

151s

Max time network

191s

Command Line

"C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe"

Signatures

LimeRAT

rat limerat

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IntelCpHDCPSvc.url C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe N/A

Legitimate hosting services abused for malware hosting/C2

Maps connected drives based on registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1928 set thread context of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1928 wrote to memory of 1216 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe

"C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:443 pastebin.com tcp

Files

memory/1928-54-0x0000000075711000-0x0000000075713000-memory.dmp

memory/1216-55-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1216-57-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1216-61-0x000000000040824E-mapping.dmp

memory/1216-62-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1216-63-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1216-65-0x0000000073D80000-0x000000007432B000-memory.dmp

memory/1216-66-0x0000000073D80000-0x000000007432B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-06-09 05:25

Reported

2022-06-09 09:59

Platform

win10v2004-20220414-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe"

Signatures

LimeRAT

rat limerat

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IntelCpHDCPSvc.url C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe N/A

Legitimate hosting services abused for malware hosting/C2

Maps connected drives based on registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2332 set thread context of 2704 N/A C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe

"C:\Users\Admin\AppData\Local\Temp\15f4b6929cbee254d6c0e3c01ef9fea87429672c69f3d3cd7b5e660cba803417.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.68.143:443 pastebin.com tcp
IE 13.69.239.74:443 tcp
IE 20.54.110.249:443 tcp
US 40.125.122.151:443 tcp
US 13.107.4.50:80 tcp
US 13.107.4.50:80 tcp
US 8.8.8.8:53 97.97.242.52.in-addr.arpa udp

Files

memory/2704-130-0x0000000000000000-mapping.dmp

memory/2704-131-0x00000000003F0000-0x00000000003FC000-memory.dmp

memory/2704-135-0x00000000746E0000-0x0000000074C91000-memory.dmp

memory/2704-136-0x00000000746E0000-0x0000000074C91000-memory.dmp