Malware Analysis Report

2024-11-16 13:09

Sample ID 220608-eedkqabhd3
Target 1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252
SHA256 1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252
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

1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252

Threat Level: Known bad

The file 1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252 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

Modifies system certificate store

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-06-08 03:50

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-06-08 03:50

Reported

2022-06-08 04:14

Platform

win7-20220414-en

Max time kernel

152s

Max time network

168s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.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\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe N/A

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 888 set thread context of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.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 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 888 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe

"C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.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
US 104.20.68.143:443 pastebin.com tcp

Files

memory/888-54-0x0000000000EA0000-0x0000000000F38000-memory.dmp

memory/888-55-0x0000000000DD0000-0x0000000000E4A000-memory.dmp

memory/888-56-0x0000000000240000-0x0000000000272000-memory.dmp

memory/888-57-0x0000000000370000-0x0000000000396000-memory.dmp

memory/888-58-0x0000000075D21000-0x0000000075D23000-memory.dmp

memory/888-59-0x00000000003A0000-0x00000000003AC000-memory.dmp

memory/940-60-0x0000000000400000-0x000000000040C000-memory.dmp

memory/940-61-0x0000000000400000-0x000000000040C000-memory.dmp

memory/940-63-0x0000000000400000-0x000000000040C000-memory.dmp

memory/940-64-0x0000000000400000-0x000000000040C000-memory.dmp

memory/940-65-0x0000000000408C1E-mapping.dmp

memory/940-67-0x0000000000400000-0x000000000040C000-memory.dmp

memory/940-69-0x0000000000400000-0x000000000040C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-06-08 03:50

Reported

2022-06-08 04:14

Platform

win10v2004-20220414-en

Max time kernel

133s

Max time network

164s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.exe

"C:\Users\Admin\AppData\Local\Temp\1a422b2a6288cbb50beb3c380df782bcccf7516e74fceb799d5e1b014e9fb252.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 13.107.21.200:443 tcp
US 13.107.21.200:443 tcp
US 20.189.173.11:443 tcp
BE 8.238.110.126:80 tcp
NL 104.110.191.140:80 tcp

Files

memory/2756-130-0x0000000000F80000-0x0000000001018000-memory.dmp

memory/2756-131-0x0000000005B10000-0x0000000005BAC000-memory.dmp

memory/1608-132-0x0000000000000000-mapping.dmp