Malware Analysis Report

2025-03-14 23:12

Sample ID 240407-adg5aseh5y
Target e39bc371b904aec26b48a16e86671735_JaffaCakes118
SHA256 7e3410538c1117e54546c7bec64e4f9268b25adf77aee53f4097ac92550feb89
Tags
persistence
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

7e3410538c1117e54546c7bec64e4f9268b25adf77aee53f4097ac92550feb89

Threat Level: Known bad

The file e39bc371b904aec26b48a16e86671735_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

persistence

Modifies WinLogon for persistence

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 00:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 00:05

Reported

2024-04-07 00:08

Platform

win7-20240221-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\svchoste = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 2240 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2240 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2240 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2240 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2240 -s 120

Network

Country Destination Domain Proto
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp

Files

memory/2240-0-0x0000000000400000-0x0000000000434000-memory.dmp

memory/2364-1-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2240-2-0x0000000000230000-0x0000000000264000-memory.dmp

memory/2364-4-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2364-5-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2364-6-0x0000000000400000-0x0000000000417000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 00:05

Reported

2024-04-07 00:08

Platform

win10v2004-20240226-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\svchoste = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
PID 1368 wrote to memory of 4320 N/A C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1368 -ip 1368

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1368 -s 344

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 66.148.72.8:5678 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp
US 66.148.72.8:5678 tcp

Files

memory/1368-0-0x0000000000400000-0x0000000000434000-memory.dmp

memory/4320-1-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4320-3-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4320-4-0x0000000000400000-0x0000000000417000-memory.dmp

memory/1368-5-0x0000000000400000-0x0000000000434000-memory.dmp