Malware Analysis Report

2025-08-10 18:06

Sample ID 240507-elr2paha6z
Target 1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118
SHA256 8bcedd975286df6a6d4a50c022d646c62a6c3fe904e2d0d524e4d59c263e7cc8
Tags
upx bootkit persistence
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

8bcedd975286df6a6d4a50c022d646c62a6c3fe904e2d0d524e4d59c263e7cc8

Threat Level: Shows suspicious behavior

The file 1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx bootkit persistence

UPX packed file

Writes to the Master Boot Record (MBR)

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Modifies Internet Explorer settings

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-07 04:02

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-07 04:02

Reported

2024-05-07 04:04

Platform

win7-20240419-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe"

Signatures

UPX packed file

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.8341km.com udp
US 8.8.8.8:53 www.8341km.com udp

Files

memory/2428-0-0x0000000000400000-0x000000000052B000-memory.dmp

memory/2428-1-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2428-2-0x0000000003630000-0x0000000003640000-memory.dmp

memory/2428-11-0x0000000000400000-0x000000000052B000-memory.dmp

memory/2428-34-0x0000000000220000-0x0000000000221000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-07 04:02

Reported

2024-05-07 04:04

Platform

win10v2004-20240419-en

Max time kernel

140s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe"

Signatures

UPX packed file

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1f6309f73422b2c6b9842ecc762c3af7_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.8341km.com udp
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 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 www.8341km.com udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 48.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/1524-0-0x0000000000400000-0x000000000052B000-memory.dmp

memory/1524-1-0x0000000000B30000-0x0000000000B31000-memory.dmp

memory/1524-14-0x0000000000400000-0x000000000052B000-memory.dmp

memory/1524-16-0x0000000000B30000-0x0000000000B31000-memory.dmp