Malware Analysis Report

2025-01-22 14:42

Sample ID 240605-2e1ftabg26
Target 4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8
SHA256 4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8
Tags
gh0strat persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8

Threat Level: Known bad

The file 4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8 was found to be: Known bad.

Malicious Activity Summary

gh0strat persistence rat

Gh0st RAT payload

Gh0strat

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-05 22:30

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-05 22:30

Reported

2024-06-05 22:32

Platform

win7-20240508-en

Max time kernel

150s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe"

Signatures

Gh0st RAT payload

Description Indicator Process Target
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Gh0strat

rat gh0strat

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\Windows\svchest000.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe" C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe

"C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe"

\??\c:\Windows\svchest000.exe

c:\Windows\svchest000.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 aa0533.3322.org udp

Files

memory/2904-0-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-1-0x00000000003A0000-0x00000000003DE000-memory.dmp

memory/2904-10-0x0000000000401000-0x0000000000468000-memory.dmp

memory/2904-9-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-8-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-6-0x00000000001D0000-0x00000000001D1000-memory.dmp

memory/2904-5-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2904-4-0x00000000001E0000-0x00000000001E2000-memory.dmp

memory/2904-3-0x00000000003A0000-0x00000000003DE000-memory.dmp

memory/2904-2-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-7-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-15-0x0000000000400000-0x000000000054B000-memory.dmp

C:\Windows\svchest000.exe

MD5 99bf9a530000c1d13f5a0a84e6fa89d0
SHA1 37ea9b81707c9f904a12e7a6444defc1fb0e64e4
SHA256 4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8
SHA512 07570afb01e5cde84930946b10934f5097a6ae17984fb836e416f25beb72a89799357f51925d276e1b42034f0f95cfbe6fd78e5313ff51ba96b596f4d6e938dc

memory/2576-19-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-25-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-26-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-28-0x00000000002D0000-0x000000000030E000-memory.dmp

memory/2576-27-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-31-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-24-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-23-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-21-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-22-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2576-20-0x00000000002D0000-0x000000000030E000-memory.dmp

memory/2904-32-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2904-33-0x00000000003A0000-0x00000000003DE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-05 22:30

Reported

2024-06-05 22:32

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

92s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe"

Signatures

Gh0st RAT payload

Description Indicator Process Target
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Gh0strat

rat gh0strat

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\Windows\svchest425075242507520.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe" C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification \??\c:\Windows\BJ.exe C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A
File created \??\c:\Windows\BJ.exe C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A
File created \??\c:\Windows\svchest425075242507520.exe C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A
File opened for modification \??\c:\Windows\svchest425075242507520.exe C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe

"C:\Users\Admin\AppData\Local\Temp\4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8.exe"

\??\c:\Windows\svchest425075242507520.exe

c:\Windows\svchest425075242507520.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 aa0533.3322.org udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp

Files

memory/2344-0-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-1-0x0000000000800000-0x000000000083E000-memory.dmp

memory/2344-3-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-2-0x0000000000800000-0x000000000083E000-memory.dmp

memory/2344-5-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-11-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-10-0x0000000000401000-0x0000000000468000-memory.dmp

memory/2344-9-0x00000000007E0000-0x00000000007E1000-memory.dmp

memory/2344-8-0x00000000007D0000-0x00000000007D2000-memory.dmp

memory/2344-7-0x0000000000670000-0x0000000000671000-memory.dmp

memory/2344-6-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-4-0x0000000000400000-0x000000000054B000-memory.dmp

C:\Windows\svchest425075242507520.exe

MD5 99bf9a530000c1d13f5a0a84e6fa89d0
SHA1 37ea9b81707c9f904a12e7a6444defc1fb0e64e4
SHA256 4b90588b7c012b6e6f913ddd499f33b8b973e6ffbfb5926942122ba053272db8
SHA512 07570afb01e5cde84930946b10934f5097a6ae17984fb836e416f25beb72a89799357f51925d276e1b42034f0f95cfbe6fd78e5313ff51ba96b596f4d6e938dc

memory/4036-19-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-26-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-23-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-24-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-22-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-21-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-20-0x0000000002050000-0x000000000208E000-memory.dmp

memory/4036-29-0x0000000002050000-0x000000000208E000-memory.dmp

memory/4036-28-0x0000000000400000-0x000000000054B000-memory.dmp

memory/4036-27-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-31-0x0000000000400000-0x000000000054B000-memory.dmp

memory/2344-32-0x0000000000800000-0x000000000083E000-memory.dmp