Malware Analysis Report

2025-08-10 19:09

Sample ID 220115-djm5aaceck
Target 080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6
SHA256 080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6
Tags
arkei default stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6

Threat Level: Known bad

The file 080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6 was found to be: Known bad.

Malicious Activity Summary

arkei default stealer

Arkei

Suspicious use of NtCreateProcessExOtherParentProcess

Arkei Stealer Payload

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-15 03:02

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-15 03:02

Reported

2022-01-15 03:04

Platform

win10v2004-en-20220112

Max time kernel

4265058s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6.exe"

Signatures

Arkei

stealer arkei

Suspicious use of NtCreateProcessExOtherParentProcess

Description Indicator Process Target
PID 3052 created 2144 N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6.exe

Arkei Stealer Payload

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

Checks processor information in registry

Description Indicator Process Target
Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\system32\MusNotification.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\system32\MusNotification.exe N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\SysWOW64\WerFault.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\SysWOW64\WerFault.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\SysWOW64\WerFault.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\SysWOW64\WerFault.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\system32\MusNotification.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\MusNotification.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6.exe

"C:\Users\Admin\AppData\Local\Temp\080d41ef097ff4647c9b7901ddc8fc3ffdb3c9cb0f360e3fe96a591a9f8089a6.exe"

C:\Windows\system32\MusNotification.exe

C:\Windows\system32\MusNotification.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 560

Network

Country Destination Domain Proto
US 8.8.8.8:53 time.windows.com udp
US 8.8.8.8:53 slscr.update.microsoft.com udp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
US 8.8.8.8:53 fe3cr.delivery.mp.microsoft.com udp
US 8.8.8.8:53 fe3cr.delivery.mp.microsoft.com udp
US 52.152.108.96:443 fe3cr.delivery.mp.microsoft.com tcp
NL 40.119.148.38:123 time.windows.com udp
US 8.8.8.8:53 arc.msn.com udp
US 52.184.215.140:443 arc.msn.com tcp
US 8.8.8.8:53 slscr.update.microsoft.com udp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
US 8.8.8.8:53 ris.api.iris.microsoft.com udp
US 52.252.42.28:443 ris.api.iris.microsoft.com tcp
US 8.8.8.8:53 img-prod-cms-rt-microsoft-com.akamaized.net udp
FR 2.22.22.217:443 img-prod-cms-rt-microsoft-com.akamaized.net tcp

Files

memory/2144-130-0x000000000087E000-0x000000000088F000-memory.dmp

memory/2144-131-0x00000000007F0000-0x000000000080C000-memory.dmp

memory/2144-132-0x0000000000400000-0x0000000000560000-memory.dmp