Malware Analysis Report

2024-12-07 16:24

Sample ID 241113-1jwgzszdnf
Target 45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e
SHA256 45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e
Tags
defense_evasion discovery evasion
score
8/10

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
8/10

SHA256

45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e

Threat Level: Likely malicious

The file 45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery evasion

Sets file to hidden

Checks computer location settings

Deletes itself

Executes dropped EXE

Indicator Removal: File Deletion

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

Views/modifies file attributes

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 21:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 21:41

Reported

2024-11-13 21:43

Platform

win7-20240903-en

Max time kernel

141s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe"

Signatures

Sets file to hidden

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

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\zskhost.exe N/A

Indicator Removal: File Deletion

defense_evasion

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\zskhost.exe C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
File opened for modification C:\Windows\Debug\zskhost.exe C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
File opened for modification C:\Windows\Debug\zskhost.exe C:\Windows\SysWOW64\attrib.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\Debug\zskhost.exe N/A
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\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.exe N/A

Checks processor information in registry

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A

Views/modifies file attributes

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

Processes

C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe

"C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe"

C:\Windows\SysWOW64\attrib.exe

attrib +a +s +h +r C:\Windows\Debug\zskhost.exe

C:\Windows\Debug\zskhost.exe

C:\Windows\Debug\zskhost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\45168B~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 ehSPEj3aPj.nnnn.eu.org udp
US 8.8.8.8:53 EN9bVDXhdR.nnnn.eu.org udp
US 8.8.8.8:53 o4qmG1pMf.nnnn.eu.org udp

Files

memory/2364-0-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\Debug\zskhost.exe

MD5 de431f2796c3116bec24022f3f0cbf14
SHA1 725c87b45adfe8dafd15bad5cbe6c59feceac630
SHA256 a61eec9ce67ce0ef8c3d58023c5e0e4deab8fa0ca451ca2e7ed79b124a99a18b
SHA512 27c02dae6ae8f318e01c81fea599fc4e2da1bee9ed2aafe0fb9fc3b65474ae429fee07a181470ffcd19dbb4378ec6fc412031e2385f26738e3e335078a0808cf

memory/2580-5-0x0000000000400000-0x0000000000410000-memory.dmp

memory/2364-6-0x0000000000400000-0x0000000000410000-memory.dmp

memory/2580-7-0x0000000000400000-0x0000000000410000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 21:41

Reported

2024-11-13 21:44

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

162s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe"

Signatures

Sets file to hidden

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\pwshost.exe C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
File opened for modification C:\Windows\Debug\pwshost.exe C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
File opened for modification C:\Windows\Debug\pwshost.exe C:\Windows\SysWOW64\attrib.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\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\pwshost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.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\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe N/A

Views/modifies file attributes

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

Processes

C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe

"C:\Users\Admin\AppData\Local\Temp\45168b85313de18c101466b0de34cde993f96527c5e06a6a9bf32184445f803e.exe"

C:\Windows\SysWOW64\attrib.exe

attrib +a +s +h +r C:\Windows\Debug\pwshost.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\45168B~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 www.baidu.com udp
HK 103.235.46.96:80 www.baidu.com tcp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 96.46.235.103.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 72.208.201.84.in-addr.arpa udp
US 8.8.8.8:53 uT4SXOY1RR.nnnn.eu.org udp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 UfGdIM199.nnnn.eu.org udp
US 8.8.8.8:53 4MxpZKVluN.nnnn.eu.org udp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

memory/956-0-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\debug\pwshost.exe

MD5 72880636bb4e7e31ed09c19dee929763
SHA1 0ece614208708bdf31bf0356b2e06e79ee7d258a
SHA256 16dfffc3521bda945e180fb194d5c9cc253cbcf71335386b339fceee22a057fa
SHA512 b93de7d8d6f81d79af607a77e2fa496e5a7424d6275155c4829c5f536accc76b07c15c2bd197865c9228754064d22103968a7893fe2e2659354c2c7736bcfd35

memory/956-5-0x0000000000400000-0x0000000000410000-memory.dmp

memory/4464-6-0x0000000000400000-0x0000000000410000-memory.dmp