Malware Analysis Report

2024-09-23 00:24

Sample ID 240503-ngh3nafc62
Target Google Chrome.exe
SHA256 a28c79b8e988e8b4a99ae32cc9f76d3312d4e775520138f90ec043d4544d45b8
Tags
stormkitty persistence stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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
10/10

SHA256

a28c79b8e988e8b4a99ae32cc9f76d3312d4e775520138f90ec043d4544d45b8

Threat Level: Known bad

The file Google Chrome.exe was found to be: Known bad.

Malicious Activity Summary

stormkitty persistence stealer

Contains code to disable Windows Defender

StormKitty payload

Stormkitty family

StormKitty

Looks up external IP address via web service

Adds Run key to start application

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-05-03 11:22

Signatures

Contains code to disable Windows Defender

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

StormKitty payload

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

Stormkitty family

stormkitty

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-03 11:22

Reported

2024-05-03 11:24

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe"

Signatures

Contains code to disable Windows Defender

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

StormKitty

stealer stormkitty

StormKitty payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvidiaDValueOn = "C:\\Users\\Admin\\AppData\\Local\\NVIDIA Local Drivers\\DriversUpdateProcess_x64.exe" C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2960 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe C:\Windows\system32\WerFault.exe
PID 2960 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe C:\Windows\system32\WerFault.exe
PID 2960 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe

"C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2960 -s 904

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp

Files

memory/2960-0-0x000007FEF5C73000-0x000007FEF5C74000-memory.dmp

memory/2960-1-0x0000000001090000-0x00000000010AA000-memory.dmp

memory/2960-2-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

memory/2960-5-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-03 11:22

Reported

2024-05-03 11:24

Platform

win10v2004-20240419-en

Max time kernel

134s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe"

Signatures

Contains code to disable Windows Defender

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

StormKitty

stealer stormkitty

StormKitty payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nvidiaDValueOn = "C:\\Users\\Admin\\AppData\\Local\\NVIDIA Local Drivers\\DriversUpdateProcess_x64.exe" C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe

"C:\Users\Admin\AppData\Local\Temp\Google Chrome.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 168.6.122.193.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 51.15.97.104.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/3048-1-0x00007FFAD5293000-0x00007FFAD5295000-memory.dmp

memory/3048-0-0x0000000000DB0000-0x0000000000DCA000-memory.dmp

memory/3048-2-0x00007FFAD5290000-0x00007FFAD5D51000-memory.dmp

memory/3048-5-0x00007FFAD5290000-0x00007FFAD5D51000-memory.dmp