Malware Analysis Report

2025-03-14 23:28

Sample ID 240407-wt84lsaf81
Target e58d072800a8d89cea931fa784aaa899_JaffaCakes118
SHA256 e36f85b380fcff0dcee090f7f4397efcc60f8663e9b36b39ce8c08d2c618e0a4
Tags
persistence
score
6/10

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
6/10

SHA256

e36f85b380fcff0dcee090f7f4397efcc60f8663e9b36b39ce8c08d2c618e0a4

Threat Level: Shows suspicious behavior

The file e58d072800a8d89cea931fa784aaa899_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 18:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 18:13

Reported

2024-04-07 18:16

Platform

win7-20240221-en

Max time kernel

150s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Wapp = "C:\\Arquivos de programas\\Wapp.exe" C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\WINDOWS\system\Next.txt C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A
File created C:\Windows\Menu Iniciar\Iniciar\Wapp.exe C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /tn startt /tr c:\autoexec.bat /sc onstart /ru system

Network

Country Destination Domain Proto
US 8.8.8.8:53 smtp.uol.com.br udp
BR 200.147.35.206:587 smtp.uol.com.br tcp

Files

memory/1940-0-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-1-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-3-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-2-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-4-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-5-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-6-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-7-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-8-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-9-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-12-0x00000000749B0000-0x00000000749BC000-memory.dmp

memory/1940-10-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/1940-11-0x0000000074DA0000-0x0000000074DAA000-memory.dmp

memory/1940-13-0x0000000075C70000-0x0000000075D60000-memory.dmp

memory/1940-14-0x00000000748E0000-0x00000000748E9000-memory.dmp

memory/1940-16-0x00000000745E0000-0x0000000074638000-memory.dmp

memory/1940-17-0x0000000074490000-0x00000000744DF000-memory.dmp

memory/1940-18-0x0000000074610000-0x0000000074617000-memory.dmp

memory/1940-19-0x0000000075DA0000-0x0000000075DA6000-memory.dmp

memory/1940-20-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-21-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-22-0x000000007EF50000-0x000000007EFAC000-memory.dmp

memory/1940-23-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/1940-24-0x0000000074DA0000-0x0000000074DAA000-memory.dmp

memory/1940-25-0x0000000075C70000-0x0000000075D60000-memory.dmp

memory/1940-26-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-27-0x00000000745E0000-0x0000000074638000-memory.dmp

memory/1940-28-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-29-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-30-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-31-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-32-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-33-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-34-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-35-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-36-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-37-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-38-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1940-39-0x0000000000400000-0x000000000118E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:13

Reported

2024-04-07 18:16

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Wapp = "C:\\Arquivos de programas\\Wapp.exe" C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Menu Iniciar\Iniciar\Wapp.exe C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A
File created C:\WINDOWS\system\Next.txt C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e58d072800a8d89cea931fa784aaa899_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /tn startt /tr c:\autoexec.bat /sc onstart /ru system

Network

Country Destination Domain Proto
US 8.8.8.8:53 smtp.uol.com.br udp
BR 200.147.35.206:587 smtp.uol.com.br tcp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 206.35.147.200.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/1640-0-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-1-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-2-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-3-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-4-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-5-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-7-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-8-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-6-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-9-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-10-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-11-0x0000000002F30000-0x0000000002F31000-memory.dmp

memory/1640-13-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-14-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-15-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-16-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-17-0x000000007FDF0000-0x000000007FE4C000-memory.dmp

memory/1640-18-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-19-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-20-0x0000000002F30000-0x0000000002F31000-memory.dmp

memory/1640-21-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-22-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-23-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-24-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-25-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-26-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-27-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-28-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-29-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-30-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-31-0x0000000000400000-0x000000000118E000-memory.dmp

memory/1640-32-0x0000000000400000-0x000000000118E000-memory.dmp