Malware Analysis Report

2024-11-16 13:10

Sample ID 220521-avp68sdgfp
Target 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
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

37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be

Threat Level: Known bad

The file 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be was found to be: Known bad.

Malicious Activity Summary

limerat rat

Limerat family

LimeRAT

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Maps connected drives based on registry

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-21 00:32

Signatures

Limerat family

limerat

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-21 00:32

Reported

2022-05-21 00:46

Platform

win7-20220414-en

Max time kernel

137s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe"

Signatures

LimeRAT

rat limerat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\VM\RuntimeBroker.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:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\VM\RuntimeBroker.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 C:\Users\Admin\VM\RuntimeBroker.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\VM\RuntimeBroker.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\VM\RuntimeBroker.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe

"C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\VM\RuntimeBroker.exe'"

C:\Users\Admin\VM\RuntimeBroker.exe

"C:\Users\Admin\VM\RuntimeBroker.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:443 pastebin.com tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp

Files

memory/1992-54-0x0000000000BA0000-0x0000000000BAC000-memory.dmp

memory/328-55-0x0000000000000000-mapping.dmp

memory/1992-56-0x0000000075381000-0x0000000075383000-memory.dmp

\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2

memory/840-59-0x0000000000000000-mapping.dmp

\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2

C:\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2

C:\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2

memory/840-62-0x00000000003A0000-0x00000000003AC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-21 00:32

Reported

2022-05-21 00:46

Platform

win10v2004-20220414-en

Max time kernel

134s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe"

Signatures

LimeRAT

rat limerat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\VM\RuntimeBroker.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe N/A

Legitimate hosting services abused for malware hosting/C2

Maps connected drives based on registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Users\Admin\VM\RuntimeBroker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\VM\RuntimeBroker.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\VM\RuntimeBroker.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\VM\RuntimeBroker.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe

"C:\Users\Admin\AppData\Local\Temp\37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\VM\RuntimeBroker.exe'"

C:\Users\Admin\VM\RuntimeBroker.exe

"C:\Users\Admin\VM\RuntimeBroker.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.68.143:443 pastebin.com tcp
IT 185.25.207.147:9987 tcp
US 52.182.143.208:443 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp
IT 185.25.207.147:9987 tcp

Files

memory/4912-130-0x0000000000890000-0x000000000089C000-memory.dmp

memory/4912-131-0x00000000050C0000-0x000000000515C000-memory.dmp

memory/4912-132-0x0000000005160000-0x00000000051C6000-memory.dmp

memory/4912-133-0x0000000005EA0000-0x0000000006444000-memory.dmp

memory/1200-134-0x0000000000000000-mapping.dmp

memory/4328-135-0x0000000000000000-mapping.dmp

C:\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2

C:\Users\Admin\VM\RuntimeBroker.exe

MD5 07c27d514bfbde4482b8e1b6ea27b456
SHA1 535e1b3f81abcfcbae2066f28f3bcbded60e6829
SHA256 37d6832272f4b87fd9194539e17c5da57b8c4508d54e586b8c6bcf8b856f82be
SHA512 f69492a2c8a6eca0abfb57f4b7e0d9bd347f8c8b6e952ce1998b13bf0df898e47ad87dfb3d28f6a47ff8e7652fd4ed3305fce5103b4c3e9ec29fd8af599555d2