Malware Analysis Report

2024-11-13 18:05

Sample ID 241110-b2gn4sxakf
Target 3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN
SHA256 3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0c
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0c

Threat Level: Likely malicious

The file 3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery evasion

Sets file to hidden

Checks computer location settings

Executes dropped EXE

Deletes itself

Indicator Removal: File Deletion

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Views/modifies file attributes

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 01:38

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:38

Reported

2024-11-10 01:40

Platform

win10v2004-20241007-en

Max time kernel

111s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A

Executes dropped EXE

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

Indicator Removal: File Deletion

defense_evasion

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\hauhost.exe C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A
File opened for modification C:\Windows\Debug\hauhost.exe C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A
File opened for modification C:\Windows\Debug\hauhost.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:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\hauhost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe

"C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe"

C:\Windows\SysWOW64\attrib.exe

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

C:\Windows\Debug\hauhost.exe

C:\Windows\Debug\hauhost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\3AD4B2~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 tDo3gTl3XI.nnnn.eu.org udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 acjR6elOC.nnnn.eu.org udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 IRcS47M8Q.nnnn.eu.org udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 kzcoDY7Us8.nnnn.eu.org udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

C:\Windows\Debug\hauhost.exe

MD5 62d7f1549933b37fec8abe7fe99bc88f
SHA1 6b153e975cacb0a88dc0602054e6dce8c7229263
SHA256 fb7c6844e02f3f637b6b3c42fc2e8a98f5f9d567a2d401c4f75ca1ddc4b22db1
SHA512 09cea6b328ff12f9f04361791580405e34e2a7f5184e5105c67e0b734812675afdb7ba94e740c031fed2d1be55c7b8f8793207148f9b3854c8f68fe0f546cccf

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:38

Reported

2024-11-10 01:40

Platform

win7-20240903-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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 opened for modification C:\Windows\Debug\zskhost.exe C:\Windows\SysWOW64\attrib.exe N/A
File created C:\Windows\Debug\zskhost.exe C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A
File opened for modification C:\Windows\Debug\zskhost.exe C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.exe N/A
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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe

"C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.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\3AD4B2~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 xaQe3Hyqr8.nnnn.eu.org udp
US 8.8.8.8:53 acjR6elOC.nnnn.eu.org udp
US 8.8.8.8:53 IRcS47M8Q.nnnn.eu.org udp
US 8.8.8.8:53 qhMXwh04zK.nnnn.eu.org udp

Files

C:\Windows\Debug\zskhost.exe

MD5 fcc82cd8b627616bf9318b871a6c4974
SHA1 9051a2232d7f19cb1d55abc585e948ea27f9275b
SHA256 4e01eabb8231fe18aceb87bd81a485f9bccf192f5d00958498b3412fb9222523
SHA512 880717b10f33f35c2ce9a9605eaac1739935764e3b15b9e6b9da891194ef299da26bda281c39d88e82cc7c491fe2a892b8611e42cdcbb695ff59eeabe4c6eb31