Malware Analysis Report

2025-08-05 11:48

Sample ID 241031-eypgbszfqk
Target a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N
SHA256 a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761
Tags
upx defense_evasion discovery
score
7/10

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
7/10

SHA256

a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761

Threat Level: Shows suspicious behavior

The file a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx defense_evasion discovery

Deletes itself

Checks computer location settings

Executes dropped EXE

Indicator Removal: File Deletion

UPX packed file

Drops file in Windows directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-31 04:21

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-31 04:21

Reported

2024-10-31 04:23

Platform

win7-20241010-en

Max time kernel

112s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe"

Signatures

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Debug\kkehost.exe N/A

Indicator Removal: File Deletion

defense_evasion

UPX packed file

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\kkehost.exe C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A
File opened for modification C:\Windows\Debug\kkehost.exe C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.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:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\kkehost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Debug\kkehost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Debug\kkehost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe

"C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe"

C:\Windows\Debug\kkehost.exe

C:\Windows\Debug\kkehost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A2D97B~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.baidu.com udp
HK 103.235.47.188:80 www.baidu.com tcp
US 8.8.8.8:53 tFivRlgtX.nnnn.eu.org udp
US 8.8.8.8:53 SSP6Cj90Ol.nnnn.eu.org udp

Files

memory/2344-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\debug\kkehost.exe

MD5 40221fae29e6eb2e38ee3e3482033369
SHA1 80cc6c56e65d76ca6a9fd3cb80cb975ded37cd1f
SHA256 cd53f562751e618494293b00ce68a2beae15131e8764fefbd8bfcc7678eaee0c
SHA512 87623926d5a3c26bd454f710669dc3c09908e7893daab7ca94badbdc4b1b98d993340a95249fb68afe3c8ba5ab6140227e57116770c3b84e8ec582e05e9b1190

memory/2344-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/952-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/952-12-0x0000000000400000-0x000000000040E000-memory.dmp

memory/952-15-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-31 04:21

Reported

2024-10-31 04:23

Platform

win10v2004-20241007-en

Max time kernel

111s

Max time network

107s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Debug\pwshost.exe N/A

Indicator Removal: File Deletion

defense_evasion

UPX packed file

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\pwshost.exe C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A
File opened for modification C:\Windows\Debug\pwshost.exe C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\pwshost.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Debug\pwshost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Debug\pwshost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe

"C:\Users\Admin\AppData\Local\Temp\a2d97b2b6adb9eddb7dd59b334e5ff9917c8de7fe5d6c9eb153a9e44e773d761N.exe"

C:\Windows\Debug\pwshost.exe

C:\Windows\Debug\pwshost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A2D97B~1.EXE > nul

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 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 www.baidu.com udp
HK 103.235.47.188:80 www.baidu.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 188.47.235.103.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 pfvLtFG4hg.nnnn.eu.org udp
US 8.8.8.8:53 PrcWikRO.nnnn.eu.org udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/3028-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\debug\pwshost.exe

MD5 5179511c7b6d080f6474f5c802151e24
SHA1 0cf7ec85cc7a896468c845b92154edb08d8ff9eb
SHA256 1809414d5405ee2d24fdaa288acca74e1ce7d74298dad84fa4072d021aedc668
SHA512 85e10dee9c355392446f981b8c8fef474f0585a8d12f5519435ef8ef7dd9a7e3b8442d01ea565b57a4318639af4b46e1aaf0686ad26a3a0ae23dee3fd42f9cc3

memory/3028-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4644-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4644-13-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4644-16-0x0000000000400000-0x000000000040E000-memory.dmp