Malware Analysis Report

2025-01-18 16:45

Sample ID 221001-zfw4nsfhgk
Target cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686
SHA256 cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686
Tags
collection spyware stealer upx isrstealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686

Threat Level: Known bad

The file cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686 was found to be: Known bad.

Malicious Activity Summary

collection spyware stealer upx isrstealer

ISR Stealer payload

Isrstealer family

Nirsoft

NirSoft MailPassView

UPX packed file

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-01 20:40

Signatures

ISR Stealer payload

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

Isrstealer family

isrstealer

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-01 20:40

Reported

2022-10-01 22:14

Platform

win10v2004-20220812-en

Max time kernel

92s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe"

Signatures

NirSoft MailPassView

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

Nirsoft

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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
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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 396 wrote to memory of 560 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

"C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe"

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

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

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\JUZOs3FOye.ini"

Network

Country Destination Domain Proto
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp
US 8.8.8.8:53 lightplanetltd.com udp
US 20.189.173.15:443 tcp
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp
US 67.27.154.126:80 tcp

Files

memory/4944-134-0x0000000000000000-mapping.dmp

memory/4944-135-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4944-137-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4944-138-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4944-139-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4944-140-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/560-142-0x0000000000000000-mapping.dmp

memory/560-143-0x0000000000400000-0x000000000041F000-memory.dmp

memory/560-145-0x0000000000400000-0x000000000041F000-memory.dmp

memory/560-146-0x0000000000400000-0x000000000041F000-memory.dmp

memory/560-147-0x0000000000400000-0x000000000041F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-01 20:40

Reported

2022-10-01 22:15

Platform

win7-20220812-en

Max time kernel

24s

Max time network

54s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe"

Signatures

NirSoft MailPassView

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

Nirsoft

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe
PID 1912 wrote to memory of 904 N/A C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

"C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe"

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\bV9dcGoBeO.ini"

C:\Users\Admin\AppData\Local\Temp\cf0c28083b79bae3c646a81a340229ec12a10ab6dfbd557d2bf2676d8eb45686.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\FLyFAcKys7.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 lightplanetltd.com udp

Files

memory/1564-56-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1564-57-0x00000000004512E0-mapping.dmp

memory/1564-59-0x0000000076031000-0x0000000076033000-memory.dmp

memory/1564-60-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1564-61-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1564-62-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1564-63-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\bV9dcGoBeO.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/904-66-0x0000000000400000-0x000000000041F000-memory.dmp

memory/904-67-0x000000000041C410-mapping.dmp

memory/904-70-0x0000000000400000-0x000000000041F000-memory.dmp

memory/904-71-0x0000000000400000-0x000000000041F000-memory.dmp

memory/904-72-0x0000000000400000-0x000000000041F000-memory.dmp