Malware Analysis Report

2025-06-16 01:06

Sample ID 221123-12k4zagf86
Target b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6
SHA256 b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6
Tags
xtremerat persistence rat spyware upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6

Threat Level: Known bad

The file b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6 was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware upx

Detect XtremeRAT payload

XtremeRAT

UPX packed file

Modifies Installed Components in the registry

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Windows directory

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-11-23 22:08

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-23 22:08

Reported

2022-11-24 01:30

Platform

win10v2004-20221111-en

Max time kernel

188s

Max time network

207s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe"

Signatures

Detect XtremeRAT payload

Description Indicator Process Target
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XtremeRAT

persistence spyware rat xtremerat

UPX packed file

upx
Description Indicator Process Target
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Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 3280 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 1812 wrote to memory of 3064 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 3064 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 3064 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 3064 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1812 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1812 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1812 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

"C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe"

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\notepad.exe

notepad.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3064 -ip 3064

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3028 -ip 3028

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3064 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3064 -ip 3064

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3028 -ip 3028

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 488

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3064 -s 488

Network

Country Destination Domain Proto
N/A 72.21.91.29:80 tcp
N/A 93.184.220.29:80 tcp
N/A 52.182.143.208:443 tcp
N/A 87.248.202.1:80 tcp
N/A 87.248.202.1:80 tcp
N/A 87.248.202.1:80 tcp
N/A 8.8.8.8:53 97.97.242.52.in-addr.arpa udp
N/A 8.8.8.8:53 106.89.54.20.in-addr.arpa udp

Files

memory/3280-132-0x0000000000400000-0x00000000007DC000-memory.dmp

memory/1812-135-0x0000000000000000-mapping.dmp

memory/1812-136-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1812-138-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1812-139-0x0000000010000000-0x0000000010048000-memory.dmp

memory/3280-140-0x0000000000400000-0x00000000007DC000-memory.dmp

memory/1812-141-0x0000000010000000-0x0000000010048000-memory.dmp

memory/3064-142-0x0000000000000000-mapping.dmp

memory/1812-143-0x0000000010000000-0x0000000010048000-memory.dmp

memory/3028-144-0x0000000000000000-mapping.dmp

memory/3064-145-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1812-146-0x0000000010000000-0x0000000010048000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-23 22:08

Reported

2022-11-24 01:29

Platform

win7-20220812-en

Max time kernel

152s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe"

Signatures

Detect XtremeRAT payload

Description Indicator Process Target
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XtremeRAT

persistence spyware rat xtremerat

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{8B2MO1C2-8803-5U2K-671L-S416G8EKP825} C:\Windows\SysWOW64\notepad.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{8B2MO1C2-8803-5U2K-671L-S416G8EKP825}\StubPath = "C:\\Windows\\InstallDir\\svchost.exe restart" C:\Windows\SysWOW64\notepad.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{8B2MO1C2-8803-5U2K-671L-S416G8EKP825} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{8B2MO1C2-8803-5U2K-671L-S416G8EKP825}\StubPath = "C:\\Windows\\InstallDir\\svchost.exe" C:\Windows\SysWOW64\svchost.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\svchost.exe" C:\Windows\SysWOW64\notepad.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\svchost.exe" C:\Windows\SysWOW64\notepad.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "㩃坜湩潤獷卜獹佗㙗尴潮整慰\u2e64硥e엸က엸က㽜" C:\Windows\SysWOW64\notepad.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\svchost.exe" C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\notepad.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\notepad.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\svchost.exe" C:\Windows\SysWOW64\svchost.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\InstallDir\svchost.exe C:\Windows\SysWOW64\notepad.exe N/A
File created C:\Windows\InstallDir\svchost.exe C:\Windows\SysWOW64\notepad.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 752 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
PID 1100 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1100 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1100 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1100 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1100 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\svchost.exe
PID 1100 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1100 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1100 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1100 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe
PID 1100 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe C:\Windows\SysWOW64\notepad.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

"C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe"

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\notepad.exe

notepad.exe

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 roma1996.no-ip.org udp

Files

memory/752-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

memory/752-55-0x0000000000400000-0x00000000007DC000-memory.dmp

memory/1100-58-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1100-59-0x0000000010046DF0-mapping.dmp

memory/752-63-0x0000000000400000-0x00000000007DC000-memory.dmp

memory/1100-62-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1100-64-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1100-65-0x0000000010000000-0x0000000010048000-memory.dmp

memory/820-66-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1100-67-0x0000000000400000-0x00000000007DC000-memory.dmp

memory/820-69-0x0000000000000000-mapping.dmp

memory/1984-73-0x0000000000000000-mapping.dmp

memory/1100-74-0x0000000010000000-0x0000000010048000-memory.dmp

memory/1984-76-0x0000000010000000-0x0000000010048000-memory.dmp

memory/820-77-0x0000000010000000-0x0000000010048000-memory.dmp

C:\Windows\InstallDir\svchost.exe

MD5 516988b83c8f25c047cc4bfaa24fd7eb
SHA1 4ebb58d6c0c7162a82b8432a1b7ad9f7409ebdd7
SHA256 b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6
SHA512 1cea8a4c8f5728a6c3819f1309aaca03fa03cb8f818cd582265eea640ea8f7f7f4a9cd1c56dc6efa36a92230f6de8293a72cd05a098e4ff9cdcdc321afb81ecb

memory/1984-79-0x0000000010000000-0x0000000010048000-memory.dmp

memory/820-80-0x0000000010000000-0x0000000010048000-memory.dmp