Malware Analysis Report

2024-11-16 13:10

Sample ID 220707-3fkx7aada5
Target 4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c
SHA256 4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c
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

4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c

Threat Level: Known bad

The file 4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c was found to be: Known bad.

Malicious Activity Summary

limerat rat

LimeRAT

Drops startup file

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-07 23:27

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-07 23:27

Reported

2022-07-08 00:48

Platform

win7-20220414-en

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.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\win32.url C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe N/A

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1280 set thread context of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1280 wrote to memory of 956 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe

"C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\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

Files

memory/1280-54-0x0000000000260000-0x00000000002E0000-memory.dmp

memory/1280-55-0x0000000000410000-0x0000000000442000-memory.dmp

memory/1280-56-0x0000000000440000-0x0000000000466000-memory.dmp

memory/1280-57-0x00000000756E1000-0x00000000756E3000-memory.dmp

memory/1280-58-0x0000000000470000-0x000000000047C000-memory.dmp

memory/956-59-0x0000000000400000-0x000000000040C000-memory.dmp

memory/956-60-0x0000000000400000-0x000000000040C000-memory.dmp

memory/956-62-0x0000000000400000-0x000000000040C000-memory.dmp

memory/956-63-0x0000000000400000-0x000000000040C000-memory.dmp

memory/956-64-0x0000000000408C1E-mapping.dmp

memory/956-66-0x0000000000400000-0x000000000040C000-memory.dmp

memory/956-68-0x0000000000400000-0x000000000040C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-07 23:27

Reported

2022-07-08 00:49

Platform

win10v2004-20220414-en

Max time kernel

163s

Max time network

189s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.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\win32.url C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe N/A

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3356 set thread context of 3108 N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe

"C:\Users\Admin\AppData\Local\Temp\4345494b609dce29a1cd77d7662a38ec3c99c171e68c8be446397cd72631838c.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
US 67.24.25.254:80 tcp
US 67.24.25.254:80 tcp
US 20.189.173.6:443 tcp
US 13.107.21.200:443 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:443 pastebin.com tcp
IE 20.190.159.68:443 tcp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp

Files

memory/3356-130-0x0000000000490000-0x0000000000510000-memory.dmp

memory/3356-131-0x0000000004F70000-0x000000000500C000-memory.dmp

memory/3108-132-0x0000000000000000-mapping.dmp

memory/3108-133-0x0000000000400000-0x000000000040C000-memory.dmp

memory/3108-134-0x0000000005190000-0x00000000051F6000-memory.dmp

memory/3108-135-0x0000000005DC0000-0x0000000006364000-memory.dmp

memory/3108-136-0x0000000006410000-0x00000000064A2000-memory.dmp