Malware Analysis Report

2025-01-03 07:38

Sample ID 241207-3axpsszjfz
Target d41d83747c393dffe19f1ae809298f9e_JaffaCakes118
SHA256 a8155c456591d039a2229e3445d197a575c173b1e81be6d2cffb9fec0bf31dee
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

a8155c456591d039a2229e3445d197a575c173b1e81be6d2cffb9fec0bf31dee

Threat Level: Known bad

The file d41d83747c393dffe19f1ae809298f9e_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

blustealer discovery stealer

BluStealer

Blustealer family

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-07 23:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-07 23:19

Reported

2024-12-07 23:21

Platform

win7-20240903-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe"

Signatures

BluStealer

stealer blustealer

Blustealer family

blustealer

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1964 set thread context of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Enumerates physical storage devices

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\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1964 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1964 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1964 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1964 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 1088

Network

N/A

Files

memory/1964-0-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

memory/1964-1-0x0000000001190000-0x000000000136A000-memory.dmp

memory/1964-2-0x0000000073F10000-0x00000000745FE000-memory.dmp

memory/1964-3-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

memory/1964-4-0x0000000073F10000-0x00000000745FE000-memory.dmp

memory/2192-6-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2192-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2192-7-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2192-5-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2192-10-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2192-12-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2192-15-0x0000000000400000-0x0000000000509000-memory.dmp

memory/1964-16-0x0000000073F10000-0x00000000745FE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-07 23:19

Reported

2024-12-07 23:21

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe"

Signatures

BluStealer

stealer blustealer

Blustealer family

blustealer

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4964 set thread context of 2600 N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

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\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\d41d83747c393dffe19f1ae809298f9e_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4964 -ip 4964

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 1480

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.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 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4964-0-0x000000007460E000-0x000000007460F000-memory.dmp

memory/4964-1-0x0000000000080000-0x000000000025A000-memory.dmp

memory/4964-2-0x0000000005240000-0x00000000057E4000-memory.dmp

memory/4964-3-0x0000000004D30000-0x0000000004DC2000-memory.dmp

memory/4964-4-0x0000000074600000-0x0000000074DB0000-memory.dmp

memory/4964-5-0x00000000050C0000-0x00000000050CA000-memory.dmp

memory/4964-6-0x000000007460E000-0x000000007460F000-memory.dmp

memory/4964-7-0x0000000074600000-0x0000000074DB0000-memory.dmp

memory/2600-8-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2600-10-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2600-13-0x0000000000400000-0x0000000000509000-memory.dmp

memory/4964-14-0x0000000074600000-0x0000000074DB0000-memory.dmp