Malware Analysis Report

2024-09-11 10:21

Sample ID 240529-sk8vpsah68
Target New-Client.exe
SHA256 d89a56bbfa46016796046572213f98af65abdd863fef32f8eaf50ace8fb1f921
Tags
limerat rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d89a56bbfa46016796046572213f98af65abdd863fef32f8eaf50ace8fb1f921

Threat Level: Known bad

The file New-Client.exe was found to be: Known bad.

Malicious Activity Summary

limerat rat

Limerat family

LimeRAT

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Modifies data under HKEY_USERS

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-29 15:12

Signatures

Limerat family

limerat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-29 15:12

Reported

2024-05-29 15:12

Platform

win10v2004-20240508-en

Max time kernel

24s

Max time network

25s

Command Line

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

Signatures

LimeRAT

rat limerat

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "197" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Shutdown.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4448 wrote to memory of 3820 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\Shutdown.exe
PID 4448 wrote to memory of 3820 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\Shutdown.exe
PID 4448 wrote to memory of 3820 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\Shutdown.exe

Processes

C:\Users\Admin\AppData\Local\Temp\New-Client.exe

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

C:\Windows\SysWOW64\Shutdown.exe

Shutdown /s /f /t 00

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa39b7855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
NL 23.62.61.160:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 160.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.4.235:443 pastebin.com tcp
US 107.208.148.72:2000 tcp
US 8.8.8.8:53 235.4.20.104.in-addr.arpa udp
US 8.8.8.8:53 72.148.208.107.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 66.112.168.52.in-addr.arpa udp

Files

memory/4448-0-0x0000000074FEE000-0x0000000074FEF000-memory.dmp

memory/4448-1-0x0000000000F20000-0x0000000000F2C000-memory.dmp

memory/4448-2-0x00000000058F0000-0x000000000598C000-memory.dmp

memory/4448-3-0x0000000005A00000-0x0000000005A66000-memory.dmp

memory/4448-4-0x0000000074FE0000-0x0000000075790000-memory.dmp

memory/4448-5-0x00000000066E0000-0x0000000006C84000-memory.dmp

memory/4448-6-0x0000000007B10000-0x0000000007BA2000-memory.dmp

memory/4448-7-0x0000000007A60000-0x0000000007A6C000-memory.dmp

memory/4448-8-0x0000000074FE0000-0x0000000075790000-memory.dmp