Malware Analysis Report

2024-10-19 08:06

Sample ID 240530-vjw6maed7t
Target 84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118
SHA256 3187ec733179fb0ea2221d39e3efb620c4fe9fa8b3790b0c91792dc073f4a08d
Tags
njrat bootkit evasion persistence trojan
score
10/10

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
10/10

SHA256

3187ec733179fb0ea2221d39e3efb620c4fe9fa8b3790b0c91792dc073f4a08d

Threat Level: Known bad

The file 84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

njrat bootkit evasion persistence trojan

njRAT/Bladabindi

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Identifies Wine through registry keys

Checks whether UAC is enabled

Writes to the Master Boot Record (MBR)

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 17:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 17:01

Reported

2024-05-30 17:04

Platform

win7-20240221-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_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\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\server.exe C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe"

Network

N/A

Files

memory/1628-0-0x00000000008A0000-0x0000000000DBC000-memory.dmp

memory/1628-4-0x00000000008A0000-0x0000000000DBC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 17:01

Reported

2024-05-30 17:04

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_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\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\server.exe C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\84d5bcf5145b4e674077d7a57ee278b6_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
NL 23.62.61.160:443 www.bing.com tcp
US 8.8.8.8:53 160.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.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
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/1316-0-0x00000000008C0000-0x0000000000DDC000-memory.dmp

memory/1316-5-0x00000000008C0000-0x0000000000DDC000-memory.dmp