Malware Analysis Report

2025-01-18 16:42

Sample ID 241202-g34g6atjcw
Target b73b615100f8b5ab85df87f9ca529960_JaffaCakes118
SHA256 eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79
Tags
isrstealer collection discovery spyware stealer trojan upx
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

eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79

Threat Level: Known bad

The file b73b615100f8b5ab85df87f9ca529960_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer collection discovery spyware stealer trojan upx

ISR Stealer

ISR Stealer payload

Isrstealer family

Detected Nirsoft tools

NirSoft MailPassView

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

UPX packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-02 06:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-02 06:20

Reported

2024-12-02 06:23

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_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

Isrstealer family

isrstealer

Detected Nirsoft tools

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

NirSoft MailPassView

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

UPX packed file

upx
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

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\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2284 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe
PID 2276 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\i25IIJQ21c.ini"

C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\8A5HyQBVwu.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 hostlogs.net16.net udp

Files

memory/2284-0-0x0000000003830000-0x0000000003885000-memory.dmp

memory/2276-1-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2276-4-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2276-9-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2276-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2276-5-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1668-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1668-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1668-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1668-18-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\i25IIJQ21c.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2276-21-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2528-23-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2528-24-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2528-25-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2528-26-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2276-28-0x0000000000400000-0x0000000000442000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-02 06:20

Reported

2024-12-02 06:23

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe"

Signatures

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\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b73b615100f8b5ab85df87f9ca529960_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 468

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

N/A