Malware Analysis Report

2024-10-19 10:27

Sample ID 240626-tt8rqsvfkr
Target 12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118
SHA256 8c3b961b4f232f5ab2594f14e852467275271b63f28d76dc82ae68144d27e9d7
Tags
isrstealer bootkit persistence spyware stealer 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

8c3b961b4f232f5ab2594f14e852467275271b63f28d76dc82ae68144d27e9d7

Threat Level: Known bad

The file 12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer bootkit persistence spyware stealer trojan

ISR Stealer

ISR Stealer payload

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Writes to the Master Boot Record (MBR)

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 16:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 16:22

Reported

2024-06-26 16:24

Platform

win7-20240611-en

Max time kernel

118s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer 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

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2384 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 804 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 bojku0.get24.org udp

Files

memory/804-12-0x0000000000400000-0x000000000041E000-memory.dmp

memory/804-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/804-14-0x0000000000400000-0x000000000041E000-memory.dmp

memory/804-6-0x0000000000400000-0x000000000041E000-memory.dmp

memory/804-17-0x0000000000400000-0x000000000041E000-memory.dmp

memory/804-2-0x0000000000400000-0x000000000041E000-memory.dmp

memory/804-4-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2588-22-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2588-18-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2588-20-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2588-32-0x0000000000400000-0x0000000000414000-memory.dmp

memory/804-31-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2588-35-0x0000000000400000-0x0000000000414000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 16:22

Reported

2024-06-26 16:24

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer 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

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 2092 wrote to memory of 4716 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe
PID 4716 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12a0507a3fa1830c02af1155df5b17d4_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 bojku0.get24.org udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/4716-2-0x0000000000400000-0x000000000041E000-memory.dmp

memory/4716-4-0x0000000000400000-0x000000000041E000-memory.dmp

memory/4756-9-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4756-7-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4716-14-0x0000000000400000-0x000000000041E000-memory.dmp

memory/4756-15-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4756-16-0x0000000000400000-0x0000000000414000-memory.dmp