Malware Analysis Report

2024-12-07 21:31

Sample ID 240716-rk66fawgqn
Target 4eaf50c87be3b9145fadad19a1145234_JaffaCakes118
SHA256 4ca6f2cc6e3d505a090a6ef2c0ac52ce791ef1bd92cfab070ee64398201ca2da
Tags
xtremerat persistence rat spyware
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

4ca6f2cc6e3d505a090a6ef2c0ac52ce791ef1bd92cfab070ee64398201ca2da

Threat Level: Known bad

The file 4eaf50c87be3b9145fadad19a1145234_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware

Xtremerat family

XtremeRAT

Detect XtremeRAT payload

Boot or Logon Autostart Execution: Active Setup

Adds Run key to start application

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-16 14:16

Signatures

Detect XtremeRAT payload

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

Xtremerat family

xtremerat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-16 14:16

Reported

2024-07-16 14:18

Platform

win7-20240705-en

Max time kernel

150s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O} C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O}\StubPath = "C:\\Windows\\system32\\InstallSys\\System.exe restart" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O}\StubPath = "C:\\Windows\\system32\\InstallSys\\System.exe restart" C:\Windows\SysWOW64\svchost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallSys\System.exe C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\InstallSys\System.exe C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2436 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2400 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2400 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2400 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2400 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2436 wrote to memory of 2400 N/A C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\svchost.exe

svchost.exe

Network

Country Destination Domain Proto
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp

Files

memory/2352-4-0x0000000000C80000-0x0000000000CA0000-memory.dmp

memory/2352-5-0x0000000000C80000-0x0000000000CA0000-memory.dmp

C:\Windows\SysWOW64\InstallSys\System.exe

MD5 4eaf50c87be3b9145fadad19a1145234
SHA1 d6584468a0065a01d410a9979bec12848d5c095a
SHA256 4ca6f2cc6e3d505a090a6ef2c0ac52ce791ef1bd92cfab070ee64398201ca2da
SHA512 c56c13180e345e45f0d62309aa0936f061793c9919cc4bca93914ec7d160a0651cb481fbefb469830e169deb84e10a126f050d7549baf603972f8b3be9ba9321

memory/2400-9-0x0000000000C80000-0x0000000000CA0000-memory.dmp

memory/2436-10-0x0000000000C80000-0x0000000000C9FF0A-memory.dmp

memory/2400-12-0x0000000000C80000-0x0000000000CA0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-16 14:16

Reported

2024-07-16 14:18

Platform

win10v2004-20240709-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O}\StubPath = "C:\\Windows\\system32\\InstallSys\\System.exe restart" C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O} C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{30VO5L7E-388N-O6R7-3GY1-UNJ33L14285O}\StubPath = "C:\\Windows\\system32\\InstallSys\\System.exe restart" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallSys\\System.exe" C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallSys\System.exe C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\InstallSys\System.exe C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4eaf50c87be3b9145fadad19a1145234_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\svchost.exe

svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 momo44.no-ip.biz udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 momo44.no-ip.biz udp

Files

memory/3020-3-0x0000000000C80000-0x0000000000CA0000-memory.dmp

C:\Windows\SysWOW64\InstallSys\System.exe

MD5 4eaf50c87be3b9145fadad19a1145234
SHA1 d6584468a0065a01d410a9979bec12848d5c095a
SHA256 4ca6f2cc6e3d505a090a6ef2c0ac52ce791ef1bd92cfab070ee64398201ca2da
SHA512 c56c13180e345e45f0d62309aa0936f061793c9919cc4bca93914ec7d160a0651cb481fbefb469830e169deb84e10a126f050d7549baf603972f8b3be9ba9321

memory/2436-5-0x0000000000C80000-0x0000000000CA0000-memory.dmp

memory/2520-6-0x0000000000C80000-0x0000000000C9FF0A-memory.dmp

memory/2436-8-0x0000000000C80000-0x0000000000CA0000-memory.dmp