Malware Analysis Report

2025-08-11 07:37

Sample ID 241015-216jys1grf
Target 4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118
SHA256 d9a51dbb52827b3ec4a138f967194d0366f6a74afe5cb53b0efd297e11d0c0a9
Tags
upx 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

d9a51dbb52827b3ec4a138f967194d0366f6a74afe5cb53b0efd297e11d0c0a9

Threat Level: Shows suspicious behavior

The file 4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx bootkit discovery persistence

Writes to the Master Boot Record (MBR)

UPX packed file

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 23:03

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 23:03

Reported

2024-10-15 23:06

Platform

win7-20241010-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe"

Network

N/A

Files

memory/2520-0-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2520-1-0x0000000000400000-0x00000000004EE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 23:03

Reported

2024-10-15 23:06

Platform

win10v2004-20241007-en

Max time kernel

139s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a691af819cc8bfd1cc2a12b4c07771a_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.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 8.8.8.8:53 205.47.74.20.in-addr.arpa udp

Files

memory/5068-0-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/5068-1-0x0000000000400000-0x00000000004EE000-memory.dmp