Malware Analysis Report

2025-01-03 05:23

Sample ID 231010-3xp88sbb64
Target 33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3
SHA256 33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3
Tags
bitrat persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3

Threat Level: Known bad

The file 33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3 was found to be: Known bad.

Malicious Activity Summary

bitrat persistence trojan

BitRAT

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-10 23:53

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-10 23:53

Reported

2023-10-10 23:57

Platform

win10v2004-20230915-en

Max time kernel

151s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe"

Signatures

BitRAT

trojan bitrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\checkupdater = "C:\\Users\\Admin\\AppData\\Local\\checkupdater.exe" C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3004 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3004 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Processes

C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe

"C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe"

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

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

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

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

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 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 77.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 smgqnt3eixxksasu.xyz udp
JP 178.249.213.106:1234 smgqnt3eixxksasu.xyz tcp
JP 178.249.213.106:1234 smgqnt3eixxksasu.xyz tcp
US 8.8.8.8:53 252.15.104.51.in-addr.arpa udp
JP 178.249.213.106:1234 smgqnt3eixxksasu.xyz tcp

Files

memory/3004-0-0x0000000075190000-0x0000000075940000-memory.dmp

memory/3004-1-0x0000000075190000-0x0000000075940000-memory.dmp

memory/3004-2-0x0000000000430000-0x0000000000A54000-memory.dmp

memory/3004-3-0x0000000005420000-0x0000000005626000-memory.dmp

memory/3004-4-0x0000000002E30000-0x0000000002E40000-memory.dmp

memory/3004-5-0x0000000005760000-0x0000000005954000-memory.dmp

memory/3004-6-0x0000000005950000-0x000000000599C000-memory.dmp

memory/3004-7-0x0000000002E30000-0x0000000002E40000-memory.dmp

memory/3004-8-0x0000000005F80000-0x0000000006524000-memory.dmp

memory/1636-10-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-12-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-13-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-15-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/3004-14-0x0000000075190000-0x0000000075940000-memory.dmp

memory/1636-16-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-17-0x00000000750A0000-0x00000000750D9000-memory.dmp

memory/1636-18-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-19-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-20-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-21-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-22-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-23-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-24-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-25-0x0000000075420000-0x0000000075459000-memory.dmp

memory/1636-26-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-27-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-28-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-29-0x0000000075420000-0x0000000075459000-memory.dmp

memory/1636-30-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-31-0x0000000000400000-0x00000000007CE000-memory.dmp

memory/1636-32-0x0000000075420000-0x0000000075459000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-10 23:53

Reported

2023-10-10 23:57

Platform

win7-20230831-en

Max time kernel

122s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe

"C:\Users\Admin\AppData\Local\Temp\33d1fbfef24cf1945248cfdc35c9338aec58774838d2c8b16d7609e8badd60a3.exe"

Network

N/A

Files

memory/2272-0-0x00000000748E0000-0x0000000074FCE000-memory.dmp

memory/2272-1-0x00000000010B0000-0x00000000016D4000-memory.dmp

memory/2272-2-0x00000000748E0000-0x0000000074FCE000-memory.dmp

memory/2272-3-0x0000000005130000-0x0000000005336000-memory.dmp

memory/2272-4-0x00000000009D0000-0x0000000000A10000-memory.dmp

memory/2272-5-0x00000000009D0000-0x0000000000A10000-memory.dmp

memory/2272-6-0x00000000059E0000-0x0000000005BD4000-memory.dmp

memory/2272-7-0x0000000000530000-0x000000000057C000-memory.dmp