Malware Analysis Report

2025-01-18 16:42

Sample ID 241205-bssp1sxjbq
Target eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
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 eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe was found to be: Known bad.

Malicious Activity Summary

isrstealer collection discovery spyware stealer trojan upx

Isrstealer family

ISR Stealer

ISR Stealer payload

NirSoft MailPassView

Detected Nirsoft tools

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

UPX packed file

Suspicious use of SetThreadContext

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-05 01:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-05 01:24

Reported

2024-12-05 01:26

Platform

win7-20241010-en

Max time kernel

17s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.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\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 1304 wrote to memory of 352 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe
PID 352 wrote to memory of 2236 N/A C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

Processes

C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

"C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe"

C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

"C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe"

C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\aFz2hAbEJ3.ini"

C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\Rh82t8ljSp.ini"

Network

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

Files

memory/1304-6-0x0000000003C60000-0x0000000003CB5000-memory.dmp

memory/352-9-0x0000000000400000-0x0000000000442000-memory.dmp

memory/352-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/352-4-0x0000000000400000-0x0000000000442000-memory.dmp

memory/352-2-0x0000000000400000-0x0000000000442000-memory.dmp

memory/352-1-0x0000000000400000-0x0000000000442000-memory.dmp

memory/768-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/768-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/768-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/768-19-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\aFz2hAbEJ3.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/352-22-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2236-24-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2236-25-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2236-26-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2236-27-0x0000000000400000-0x000000000041F000-memory.dmp

memory/352-29-0x0000000000400000-0x0000000000442000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-05 01:24

Reported

2024-12-05 01:26

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.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\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe

"C:\Users\Admin\AppData\Local\Temp\eba1b6a9c7e7bff2c7e1eee915d04e1123190e2186ae51eef744ad18901a4d79N.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3304 -ip 3304

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 476

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp

Files

N/A