Malware Analysis Report

2024-09-23 11:21

Sample ID 240614-yz4gesthje
Target ab442d3874632b3b230b547ad1160bdc_JaffaCakes118
SHA256 97fbe9b8a6b66b7817fae7b6e445f3c6093d1db804b1160d0fa8bd51b67e58a1
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

97fbe9b8a6b66b7817fae7b6e445f3c6093d1db804b1160d0fa8bd51b67e58a1

Threat Level: Shows suspicious behavior

The file ab442d3874632b3b230b547ad1160bdc_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx bootkit persistence

Executes dropped EXE

Loads dropped DLL

UPX packed file

Writes to the Master Boot Record (MBR)

Unsigned PE

Modifies Internet Explorer settings

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-14 20:14

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

2024-06-14 20:14

Reported

2024-06-14 20:17

Platform

win7-20240220-en

Max time kernel

141s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ver1EA8.tmp N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\Ver1EA8.tmp N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\Ver1EA8.tmp

C:\Users\Admin\AppData\Local\Temp\Ver1EA8.tmp 0000_2014/3.7980.21280/2 startinstall

Network

Country Destination Domain Proto
US 8.8.8.8:53 installStatistic.xunyou.com udp
CN 101.200.190.178:8020 installStatistic.xunyou.com udp
CN 101.200.190.178:9220 installStatistic.xunyou.com udp

Files

\Users\Admin\AppData\Local\Temp\Ver1EA8.tmp

MD5 83f56b363eaf6bd2766ebacf70995bcb
SHA1 cecb73bd12537567b14784541546760badc175d6
SHA256 0d3ad00de0f06289d7919e66a4956d281473d20b256a5aed2903c5a6acfde74e
SHA512 5252638dde71d938e7d999ff1b485181e0771baa7e5b55e316eddbd2fdb1c6da14b878c279ebd85d826d604160acd2d354b24bff58bea6a841d6e907c0f82fa9

memory/2920-6-0x0000000000400000-0x000000000204B000-memory.dmp

memory/2920-7-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/2920-8-0x0000000000400000-0x000000000204B000-memory.dmp

memory/2920-10-0x00000000001C0000-0x00000000001C1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 20:14

Reported

2024-06-14 20:17

Platform

win10v2004-20240508-en

Max time kernel

142s

Max time network

58s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ver4546.tmp 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

Processes

C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ab442d3874632b3b230b547ad1160bdc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\Ver4546.tmp

C:\Users\Admin\AppData\Local\Temp\Ver4546.tmp 0000_2014/3.7980.21280/2 startinstall

Network

Country Destination Domain Proto
US 8.8.8.8:53 installStatistic.xunyou.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\Ver4546.tmp

MD5 83f56b363eaf6bd2766ebacf70995bcb
SHA1 cecb73bd12537567b14784541546760badc175d6
SHA256 0d3ad00de0f06289d7919e66a4956d281473d20b256a5aed2903c5a6acfde74e
SHA512 5252638dde71d938e7d999ff1b485181e0771baa7e5b55e316eddbd2fdb1c6da14b878c279ebd85d826d604160acd2d354b24bff58bea6a841d6e907c0f82fa9

memory/1892-5-0x0000000000400000-0x000000000204B000-memory.dmp

memory/1892-6-0x00000000024C0000-0x00000000024C1000-memory.dmp

memory/1892-7-0x0000000000400000-0x000000000204B000-memory.dmp

memory/1892-9-0x00000000024C0000-0x00000000024C1000-memory.dmp