Malware Analysis Report

2024-11-16 12:14

Sample ID 240716-k2cjtsxepf
Target 4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118
SHA256 e449d63581173da5231c0b9c467140a98a4953865fc85468a4ae1cc07522a647
Tags
upx neshta discovery evasion persistence privilege_escalation trojan
score
10/10

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
10/10

SHA256

e449d63581173da5231c0b9c467140a98a4953865fc85468a4ae1cc07522a647

Threat Level: Known bad

The file 4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx neshta discovery evasion persistence privilege_escalation trojan

UAC bypass

Neshta family

Detect Neshta payload

Modifies Windows Firewall

UPX packed file

Checks computer location settings

Adds Run key to start application

Checks installed software on the system

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

Unsigned PE

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-16 09:05

Signatures

Detect Neshta payload

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

Neshta family

neshta

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-16 09:05

Reported

2024-07-16 09:07

Platform

win7-20240705-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A

Modifies Windows Firewall

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

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Users\\Admin\\smss.exe" C:\Windows\SysWOW64\reg.exe N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1948 wrote to memory of 284 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 284 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 284 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 284 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 284 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 284 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 284 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 284 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2396 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2396 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2396 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2396 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1948 wrote to memory of 2440 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 1948 wrote to memory of 2440 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 1948 wrote to memory of 2440 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 1948 wrote to memory of 2440 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 3008 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3008 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3008 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3008 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe" /f"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "netsh firewall set opmode disable"

C:\Windows\SysWOW64\reg.exe

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe" /f

C:\Windows\SysWOW64\reg.exe

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f

C:\Users\Admin\smss.exe

"C:\Users\Admin\smss.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall set opmode disable

Network

Country Destination Domain Proto
US 8.8.8.8:53 win-hosts.info udp

Files

memory/1948-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1948-0-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1948-3-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2440-4-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2440-5-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2440-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2440-17-0x0000000000400000-0x0000000000478000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-16 09:05

Reported

2024-07-16 09:07

Platform

win10v2004-20240709-en

Max time kernel

146s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A

Modifies Windows Firewall

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Users\\Admin\\smss.exe" C:\Windows\SysWOW64\reg.exe N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4080 wrote to memory of 3248 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 3248 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 3248 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 4996 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 4996 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 4996 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4080 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 4080 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 4080 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe C:\Users\Admin\smss.exe
PID 3248 wrote to memory of 2420 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3248 wrote to memory of 2420 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3248 wrote to memory of 2420 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2712 wrote to memory of 1260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2712 wrote to memory of 1260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2712 wrote to memory of 1260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4996 wrote to memory of 228 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 4996 wrote to memory of 228 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 4996 wrote to memory of 228 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4da43d3f28b40c3db5478c692ff4c773_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe" /f"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c "netsh firewall set opmode disable"

C:\Users\Admin\smss.exe

"C:\Users\Admin\smss.exe"

C:\Windows\SysWOW64\reg.exe

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe" /f

C:\Windows\SysWOW64\reg.exe

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f

C:\Windows\SysWOW64\netsh.exe

netsh firewall set opmode disable

Network

Country Destination Domain Proto
US 8.8.8.8:53 win-hosts.info udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 win-hosts.info udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/4080-0-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4080-1-0x0000000002520000-0x0000000002522000-memory.dmp

memory/4080-2-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-3-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4080-5-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-7-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-8-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-10-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-12-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-13-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-14-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-16-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-20-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2388-21-0x0000000000400000-0x0000000000478000-memory.dmp