Malware Analysis Report

2024-09-23 00:20

Sample ID 240503-ng65gsdc6t
Target googlechrome.exe
SHA256 7ea06aaeaf6d72d04cbc3d94beb8b639b65ec2ee0e5cb4816cbff28790537f88
Tags
stormkitty persistence stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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
10/10

SHA256

7ea06aaeaf6d72d04cbc3d94beb8b639b65ec2ee0e5cb4816cbff28790537f88

Threat Level: Known bad

The file googlechrome.exe was found to be: Known bad.

Malicious Activity Summary

stormkitty persistence stealer

Contains code to disable Windows Defender

StormKitty payload

Stormkitty family

StormKitty

Adds Run key to start application

Looks up external IP address via web service

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-05-03 11:23

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: behavioral2

Detonation Overview

Submitted

2024-05-03 11:23

Reported

2024-05-03 11:25

Platform

win10v2004-20240419-en

Max time kernel

134s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\googlechrome.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-1-5-21-17203666-93769886-2545153620-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nvidiaDValueOn = "C:\\Users\\Admin\\AppData\\Local\\NVIDIA Local Drivers\\DriversUpdateProcess_x64.exe" C:\Users\Admin\AppData\Local\Temp\googlechrome.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\googlechrome.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\googlechrome.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
US 158.101.44.242:80 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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 242.44.101.158.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 49.15.97.104.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.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/712-1-0x00007FFFD1E53000-0x00007FFFD1E55000-memory.dmp

memory/712-0-0x0000000000690000-0x00000000006AA000-memory.dmp

memory/712-2-0x00007FFFD1E50000-0x00007FFFD2911000-memory.dmp

memory/712-5-0x00007FFFD1E50000-0x00007FFFD2911000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-03 11:23

Reported

2024-05-03 11:25

Platform

win7-20240221-en

Max time kernel

117s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\googlechrome.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

Looks up external IP address via web service

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1624 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\googlechrome.exe C:\Windows\system32\WerFault.exe
PID 1624 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\googlechrome.exe C:\Windows\system32\WerFault.exe
PID 1624 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\googlechrome.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 1624 -s 856

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
JP 132.226.8.169:80 checkip.dyndns.org tcp

Files

memory/1624-0-0x000007FEF5C43000-0x000007FEF5C44000-memory.dmp

memory/1624-1-0x0000000000B10000-0x0000000000B2A000-memory.dmp

memory/1624-2-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

memory/1624-3-0x000007FEF5C43000-0x000007FEF5C44000-memory.dmp

memory/1624-4-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp