Malware Analysis Report

2024-09-23 11:14

Sample ID 240615-mj62ts1brn
Target ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118
SHA256 ee5165770d6d8b72b861f3ed1c29d06c77d2cecf55c59791a18b4b434af8a047
Tags
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

ee5165770d6d8b72b861f3ed1c29d06c77d2cecf55c59791a18b4b434af8a047

Threat Level: Shows suspicious behavior

The file ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence

Checks computer location settings

Writes to the Master Boot Record (MBR)

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-15 10:30

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 10:30

Reported

2024-06-15 10:33

Platform

win7-20240611-en

Max time kernel

129s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_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\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1656 wrote to memory of 912 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 912 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 912 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 912 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 1656 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im KuaiZip.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im Update.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im KZReport.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im UpdateChecker.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 i.kpzip.com udp
US 8.8.8.8:53 i.kpzip.com udp
CN 211.97.81.139:80 i.kpzip.com tcp
CN 112.84.131.60:80 i.kpzip.com tcp
CN 221.204.43.57:80 i.kpzip.com tcp
CN 112.84.131.63:80 i.kpzip.com tcp
CN 59.80.47.66:80 i.kpzip.com tcp
CN 112.84.131.73:80 i.kpzip.com tcp
CN 211.97.81.63:80 i.kpzip.com tcp
CN 221.204.209.103:80 i.kpzip.com tcp
CN 59.80.47.66:80 i.kpzip.com tcp
CN 211.97.81.139:80 i.kpzip.com tcp
CN 116.148.161.142:80 i.kpzip.com tcp
CN 112.84.131.60:80 i.kpzip.com tcp
CN 112.84.131.63:80 i.kpzip.com tcp
CN 221.204.43.57:80 i.kpzip.com tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 10:30

Reported

2024-06-15 10:33

Platform

win10v2004-20240508-en

Max time kernel

145s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe 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\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4824 wrote to memory of 392 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 392 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 392 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe
PID 4824 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ae00b03b8ae74bb286db5f1dc8f21073_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im KuaiZip.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im Update.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im KZReport.exe

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im UpdateChecker.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=1288,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=3940 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 i.kpzip.com udp
US 8.8.8.8:53 tj.kpzip.com udp

Files

N/A