Malware Analysis Report

2025-01-03 07:38

Sample ID 241124-my2ewssmaj
Target 943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118
SHA256 7257e33f527df5f7820d5dfd9022d923b5fb6cdef21d402c54fc9d3f3106f3a3
Tags
blustealer discovery stealer
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

7257e33f527df5f7820d5dfd9022d923b5fb6cdef21d402c54fc9d3f3106f3a3

Threat Level: Known bad

The file 943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

blustealer discovery stealer

BluStealer

Blustealer family

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-24 10:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-24 10:53

Reported

2024-11-24 10:55

Platform

win7-20240903-en

Max time kernel

120s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

Signatures

BluStealer

stealer blustealer

Blustealer family

blustealer

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 2016 wrote to memory of 2284 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

Network

N/A

Files

memory/2016-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

memory/2016-1-0x0000000001300000-0x00000000015B6000-memory.dmp

memory/2016-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

memory/2016-3-0x0000000004FE0000-0x0000000005156000-memory.dmp

memory/2016-4-0x0000000000330000-0x0000000000346000-memory.dmp

memory/2284-6-0x0000000000400000-0x0000000000475000-memory.dmp

memory/2284-11-0x0000000000400000-0x0000000000475000-memory.dmp

memory/2284-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2284-7-0x0000000000400000-0x0000000000475000-memory.dmp

memory/2284-13-0x0000000000400000-0x0000000000475000-memory.dmp

memory/2284-5-0x0000000000400000-0x0000000000475000-memory.dmp

memory/2016-14-0x0000000074AC0000-0x00000000751AE000-memory.dmp

memory/2284-17-0x0000000000400000-0x0000000000475000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-24 10:53

Reported

2024-11-24 10:55

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

Signatures

BluStealer

stealer blustealer

Blustealer family

blustealer

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe
PID 5016 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\943244db3bce1498ee39206c5e0f2bbc_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 69.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 13.173.189.20.in-addr.arpa udp

Files

memory/5016-0-0x000000007530E000-0x000000007530F000-memory.dmp

memory/5016-1-0x00000000005B0000-0x0000000000866000-memory.dmp

memory/5016-2-0x00000000057C0000-0x0000000005D64000-memory.dmp

memory/5016-3-0x0000000005210000-0x00000000052A2000-memory.dmp

memory/5016-4-0x00000000050D0000-0x0000000005146000-memory.dmp

memory/5016-5-0x00000000052B0000-0x000000000534C000-memory.dmp

memory/5016-6-0x0000000075300000-0x0000000075AB0000-memory.dmp

memory/5016-7-0x0000000002B60000-0x0000000002B7E000-memory.dmp

memory/5016-8-0x0000000005390000-0x0000000005506000-memory.dmp

memory/5016-9-0x0000000002A20000-0x0000000002A36000-memory.dmp

memory/3384-10-0x0000000000400000-0x0000000000475000-memory.dmp

memory/3384-13-0x0000000000400000-0x0000000000475000-memory.dmp

memory/5016-16-0x0000000075300000-0x0000000075AB0000-memory.dmp

memory/3384-17-0x0000000000400000-0x0000000000475000-memory.dmp