Malware Analysis Report

2025-01-22 08:29

Sample ID 240308-cxb4hach94
Target a16a40d0182a87fc6219693ac664286738329222983bd9e70b455f198e124ba2.zip
SHA256 a16a40d0182a87fc6219693ac664286738329222983bd9e70b455f198e124ba2
Tags
persistence spyware stealer
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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

a16a40d0182a87fc6219693ac664286738329222983bd9e70b455f198e124ba2

Threat Level: Likely malicious

The file a16a40d0182a87fc6219693ac664286738329222983bd9e70b455f198e124ba2.zip was found to be: Likely malicious.

Malicious Activity Summary

persistence spyware stealer

Blocklisted process makes network request

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Adds Run key to start application

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-08 02:26

Signatures

N/A

Analysis: behavioral3

Detonation Overview

Submitted

2024-03-08 02:26

Reported

2024-03-08 02:29

Platform

win7-20240221-en

Max time kernel

141s

Max time network

143s

Command Line

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

Signatures

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\KeyScrambler = "C:\\Users\\Public\\Libraries\\SmileTV\\KeyScrambler.exe" C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\Talking_Points_for_China.exe N/A

Processes

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

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

Network

Country Destination Domain Proto
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp

Files

memory/1984-2-0x0000000000160000-0x0000000000162000-memory.dmp

memory/1984-3-0x0000000000490000-0x00000000004A1000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-03-08 02:26

Reported

2024-03-08 02:29

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

152s

Command Line

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

Signatures

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KeyScrambler = "C:\\Users\\Public\\Libraries\\SmileTV\\KeyScrambler.exe" C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\Talking_Points_for_China.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

cmd.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 157.109.27.103.in-addr.arpa udp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
HK 103.27.109.157:443 tcp
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
US 204.79.197.200:443 tse1.mm.bing.net tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 213.143.182.52.in-addr.arpa udp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp

Files

memory/4432-2-0x0000000000FD0000-0x0000000000FD2000-memory.dmp

memory/4432-3-0x0000000002B90000-0x0000000002BA1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-08 02:26

Reported

2024-03-08 02:29

Platform

win7-20240221-en

Max time kernel

146s

Max time network

149s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\KeyScrambler = "C:\\Users\\Public\\Libraries\\SmileTV\\KeyScrambler.exe" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

Network

Country Destination Domain Proto
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp

Files

memory/2192-1-0x0000000000130000-0x0000000000132000-memory.dmp

memory/2192-2-0x0000000000150000-0x0000000000161000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-08 02:26

Reported

2024-03-08 02:29

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KeyScrambler = "C:\\Users\\Public\\Libraries\\SmileTV\\KeyScrambler.exe" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3892 wrote to memory of 828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3892 wrote to memory of 828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3892 wrote to memory of 828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Talking_Points_for_China\KeyScramblerIE.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 157.109.27.103.in-addr.arpa udp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
HK 103.27.109.157:443 tcp
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
US 204.79.197.200:443 tse1.mm.bing.net tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp
HK 103.27.109.157:443 tcp

Files

memory/828-1-0x00000000009B0000-0x00000000009B2000-memory.dmp

memory/828-2-0x0000000000CD0000-0x0000000000CE1000-memory.dmp