Malware Analysis Report

2025-08-10 16:44

Sample ID 241014-t7d5aayfrl
Target 4328250444d67d911f0108e2cbea1531_JaffaCakes118
SHA256 d2aa76c69ea80d9dc95b60a8ab00c079322f8a1ce2b65826ee180d5f8a07dcfd
Tags
adware credential_access discovery spyware stealer
score
7/10

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
7/10

SHA256

d2aa76c69ea80d9dc95b60a8ab00c079322f8a1ce2b65826ee180d5f8a07dcfd

Threat Level: Shows suspicious behavior

The file 4328250444d67d911f0108e2cbea1531_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware credential_access discovery spyware stealer

Reads data files stored by FTP clients

Unsecured Credentials: Credentials In Files

Installs/modifies Browser Helper Object

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Modifies registry class

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-14 16:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-14 16:41

Reported

2024-10-14 16:44

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe"

Signatures

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\ C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\ C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\npbg8573.dll C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\REGSVR32.EXE N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Carter.clsCarter\Clsid C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Carter.clsCarter C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2324 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\cmd.exe
PID 2480 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2480 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2480 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2480 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE
PID 2324 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe C:\Windows\SysWOW64\REGSVR32.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe

"C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\REGSVR32.EXE

C:\Windows\system32\REGSVR32.EXE /s C:\Windows\npbg8573.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 vivachistyle.com udp
US 8.8.8.8:53 foxpremier2.web101.f1.k8.com.br udp
BR 187.73.33.43:80 foxpremier2.web101.f1.k8.com.br tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-14 16:41

Reported

2024-10-14 16:44

Platform

win10v2004-20241007-en

Max time kernel

141s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe"

Signatures

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\ C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\ C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\ealm4503.dll C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\REGSVR32.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Carter.clsCarter C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Carter.clsCarter\Clsid C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe N/A

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe

"C:\Users\Admin\AppData\Local\Temp\cartao.petrobras.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\REGSVR32.EXE

C:\Windows\system32\REGSVR32.EXE /s C:\Windows\ealm4503.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 foxpremier2.web101.f1.k8.com.br udp
BR 187.73.33.43:80 foxpremier2.web101.f1.k8.com.br tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

N/A