Malware Analysis Report

2025-08-11 07:36

Sample ID 241015-2f53pavdpj
Target 4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118
SHA256 659cf29395cef49c1410e4ad21d9735a25a8dc77d7a3f5797e9d1f9b9967723f
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

659cf29395cef49c1410e4ad21d9735a25a8dc77d7a3f5797e9d1f9b9967723f

Threat Level: Shows suspicious behavior

The file 4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Writes to the Master Boot Record (MBR)

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 22:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 22:32

Reported

2024-10-15 22:35

Platform

win7-20240903-en

Max time kernel

149s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_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 3000 set thread context of 3016 N/A C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_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\4a4f647bf595b8c3ca29a46d4ec4189d_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\4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118.exe"

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

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

Network

Country Destination Domain Proto
US 208.66.194.234:80 tcp
US 66.246.72.173:80 tcp
US 67.18.114.98:80 tcp
US 208.66.194.241:80 tcp
US 66.246.252.213:80 tcp
US 66.246.252.215:80 tcp
US 208.66.194.234:80 tcp

Files

memory/3000-0-0x0000000014140000-0x0000000014149000-memory.dmp

memory/3016-1-0x0000000013140000-0x000000001324A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 22:32

Reported

2024-10-15 22:35

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_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 4300 set thread context of 1020 N/A C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_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\4a4f647bf595b8c3ca29a46d4ec4189d_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\4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4f647bf595b8c3ca29a46d4ec4189d_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 8.8.8.8.in-addr.arpa udp
US 208.66.194.241:80 tcp
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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 66.246.252.213:80 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 66.246.252.215:80 tcp
US 208.66.194.234:80 tcp
US 66.246.72.173:80 tcp
US 8.8.8.8:53 48.229.111.52.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
US 67.18.114.98:80 tcp
US 208.66.194.241:80 tcp

Files

memory/4300-0-0x0000000014140000-0x0000000014149000-memory.dmp

memory/1020-1-0x0000000013140000-0x000000001324A000-memory.dmp

memory/4300-2-0x0000000014140000-0x0000000014149000-memory.dmp