Malware Analysis Report

2025-01-18 16:47

Sample ID 220308-s9mc1abefq
Target 70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92
SHA256 70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92
Tags
isrstealer collection spyware stealer upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92

Threat Level: Known bad

The file 70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92 was found to be: Known bad.

Malicious Activity Summary

isrstealer collection spyware stealer upx

Isrstealer family

ISR Stealer Payload

NirSoft MailPassView

Nirsoft

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

2022-03-08 15:49

Signatures

ISR Stealer Payload

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

Isrstealer family

isrstealer

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-08 15:49

Reported

2022-03-08 15:52

Platform

win7-20220223-en

Max time kernel

4294178s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe"

Signatures

NirSoft MailPassView

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

Nirsoft

Description Indicator Process Target
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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 1164 wrote to memory of 1924 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

Processes

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

"C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe"

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\ittjL3ZT4L.ini"

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\j7zKbILom8.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 honda-hcamjlg.com udp

Files

memory/908-56-0x0000000000400000-0x0000000000453000-memory.dmp

memory/908-58-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

memory/908-59-0x0000000000400000-0x0000000000453000-memory.dmp

memory/908-60-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ittjL3ZT4L.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/1924-63-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1924-66-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1924-67-0x0000000000400000-0x000000000041F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-08 15:49

Reported

2022-03-08 15:52

Platform

win10v2004-en-20220113

Max time kernel

129s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe"

Signatures

NirSoft MailPassView

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

Nirsoft

Description Indicator Process Target
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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 820 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe
PID 4140 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

Processes

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

"C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe"

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\33w0KjZOZz.ini"

C:\Users\Admin\AppData\Local\Temp\70f9b8047dc6aa80015da0fc8523f48d578a878485ddd1e24344a634ed47bc92.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\zi8yPkR59M.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 honda-hcamjlg.com udp
US 8.8.8.8:53 oneocsp.microsoft.com udp
US 204.79.197.203:80 oneocsp.microsoft.com tcp
US 8.8.8.8:53 www.microsoft.com udp
NL 104.85.1.163:80 www.microsoft.com tcp

Files

memory/820-132-0x0000000000400000-0x0000000000453000-memory.dmp

memory/820-134-0x0000000000400000-0x0000000000453000-memory.dmp

memory/820-135-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\33w0KjZOZz.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2800-137-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2800-139-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2800-140-0x0000000000400000-0x000000000041F000-memory.dmp