Malware Analysis Report

2025-08-06 01:36

Sample ID 241016-3ggbdsyhmh
Target 4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118
SHA256 6da1745755cd6995f1522742516f2e19349528e56e3e8db98e04f5ab6f235153
Tags
bootkit discovery 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

6da1745755cd6995f1522742516f2e19349528e56e3e8db98e04f5ab6f235153

Threat Level: Shows suspicious behavior

The file 4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Writes to the Master Boot Record (MBR)

Program crash

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-16 23:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-16 23:28

Reported

2024-10-16 23:31

Platform

win7-20240729-en

Max time kernel

16s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2100 set thread context of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE

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\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 2100 wrote to memory of 1056 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
PID 1056 wrote to memory of 2316 N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE C:\Windows\SysWOW64\WerFault.exe
PID 1056 wrote to memory of 2316 N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE C:\Windows\SysWOW64\WerFault.exe
PID 1056 wrote to memory of 2316 N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE C:\Windows\SysWOW64\WerFault.exe
PID 1056 wrote to memory of 2316 N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe"

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE

"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 156

Network

N/A

Files

memory/2100-0-0x0000000014140000-0x0000000014149000-memory.dmp

memory/2100-1-0x0000000014140000-0x0000000014149000-memory.dmp

memory/1056-2-0x0000000013140000-0x00000000131E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-16 23:28

Reported

2024-10-16 23:31

Platform

win10v2004-20241007-en

Max time kernel

139s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4228 set thread context of 3876 N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE

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\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f9af739eacdce8f0718a9c143dda17e_JaffaCakes118.exe"

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE

"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 208.66.194.241:80 tcp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 66.246.252.213:80 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 66.246.252.215:80 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 66.246.72.173:80 tcp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 67.18.114.98:80 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 208.66.194.241:80 tcp
US 208.66.194.241:80 tcp

Files

memory/4228-0-0x0000000014140000-0x0000000014149000-memory.dmp

memory/3876-1-0x0000000013140000-0x00000000131E8000-memory.dmp

memory/4228-2-0x0000000014140000-0x0000000014149000-memory.dmp