Malware Analysis Report

2024-09-23 10:52

Sample ID 240614-2jg52ayfnh
Target abcb40f4f221f98029c84af144dba3c8_JaffaCakes118
SHA256 3aa187495c8454f3c75a9091e6fd6bceddd7e2891b2a47098138efa2919e589f
Tags
upx bootkit persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

3aa187495c8454f3c75a9091e6fd6bceddd7e2891b2a47098138efa2919e589f

Threat Level: Shows suspicious behavior

The file abcb40f4f221f98029c84af144dba3c8_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

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-14 22:36

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

2024-06-14 22:36

Reported

2024-06-14 22:39

Platform

win7-20240611-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_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\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2072 -s 164

Network

N/A

Files

memory/2072-0-0x0000000000400000-0x000000000046A000-memory.dmp

memory/2072-1-0x0000000000400000-0x000000000046A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 22:36

Reported

2024-06-14 22:39

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_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\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\abcb40f4f221f98029c84af144dba3c8_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4632 -ip 4632

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 456

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 210.80.50.20.in-addr.arpa udp

Files

memory/4632-0-0x0000000000400000-0x000000000046A000-memory.dmp

memory/4632-1-0x0000000000400000-0x000000000046A000-memory.dmp