Malware Analysis Report

2024-12-07 02:05

Sample ID 241111-etscessjax
Target MEMZ.exe
SHA256 3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff
Tags
bootkit discovery persistence
score
6/10

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 Overview

score
6/10

SHA256

3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff

Threat Level: Shows suspicious behavior

The file MEMZ.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Writes to the Master Boot Record (MBR)

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 04:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 04:14

Reported

2024-11-11 04:15

Platform

win11-20241023-en

Max time kernel

31s

Command Line

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

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\MEMZ.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\notepad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MEMZ.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MEMZ.exe N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 C:\Windows\System32\Taskmgr.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A C:\Windows\System32\Taskmgr.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName C:\Windows\System32\Taskmgr.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\Taskmgr.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Taskmgr.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\System32\Taskmgr.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4128 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 3932 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 3932 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 3932 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1132 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1132 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 4128 wrote to memory of 1132 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
PID 1132 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Windows\SysWOW64\notepad.exe
PID 1132 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Windows\SysWOW64\notepad.exe
PID 1132 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\MEMZ.exe C:\Windows\SysWOW64\notepad.exe
PID 1172 wrote to memory of 1764 N/A C:\Windows\system32\launchtm.exe C:\Windows\System32\Taskmgr.exe
PID 1172 wrote to memory of 1764 N/A C:\Windows\system32\launchtm.exe C:\Windows\System32\Taskmgr.exe

Processes

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

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

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog

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

"C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /main

C:\Windows\SysWOW64\notepad.exe

"C:\Windows\System32\notepad.exe" \note.txt

C:\Windows\system32\launchtm.exe

launchtm.exe /2

C:\Windows\System32\Taskmgr.exe

"C:\Windows\System32\Taskmgr.exe" /2

Network

N/A

Files

C:\note.txt

MD5 afa6955439b8d516721231029fb9ca1b
SHA1 087a043cc123c0c0df2ffadcf8e71e3ac86bbae9
SHA256 8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270
SHA512 5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

memory/1764-4-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-3-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-2-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-14-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-13-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-12-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-11-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-10-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-9-0x00000231407F0000-0x00000231407F1000-memory.dmp

memory/1764-8-0x00000231407F0000-0x00000231407F1000-memory.dmp