Malware Analysis Report

2025-01-18 16:44

Sample ID 221020-x4f19abcar
Target dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735
SHA256 dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735
Tags
isrstealer collection spyware stealer trojan 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

dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735

Threat Level: Known bad

The file dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735 was found to be: Known bad.

Malicious Activity Summary

isrstealer collection spyware stealer trojan upx

ISR Stealer

ISR Stealer payload

NirSoft MailPassView

Nirsoft

UPX packed file

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-20 19:24

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 19:24

Reported

2022-10-20 22:06

Platform

win7-20220812-en

Max time kernel

44s

Max time network

48s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.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

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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe
PID 288 wrote to memory of 960 N/A C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe

Processes

C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe

"C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe"

C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\NC3unjNUj9.ini"

C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe

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

Network

N/A

Files

memory/288-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

memory/288-57-0x0000000000400000-0x00000000004AA000-memory.dmp

memory/1908-59-0x00000000004512E0-mapping.dmp

memory/1908-58-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1908-62-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1908-63-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1908-64-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1908-65-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\NC3unjNUj9.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/960-68-0x000000000041C410-mapping.dmp

memory/960-67-0x0000000000400000-0x000000000041F000-memory.dmp

memory/960-71-0x0000000000400000-0x000000000041F000-memory.dmp

memory/960-72-0x0000000000400000-0x000000000041F000-memory.dmp

memory/960-73-0x0000000000400000-0x000000000041F000-memory.dmp

memory/288-74-0x0000000000400000-0x00000000004AA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 19:24

Reported

2022-10-20 22:08

Platform

win10v2004-20220812-en

Max time kernel

192s

Max time network

235s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe

"C:\Users\Admin\AppData\Local\Temp\dea3e5fa45e2b709e240b450e00eadd80dcd624f88b8dd45cb3220978e487735.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2616 -ip 2616

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2616 -s 340

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 8.8.8.8:53 164.2.77.40.in-addr.arpa udp
US 8.8.8.8:53 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.3.0.4.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 209.197.3.8:80 tcp
AU 104.46.162.224:443 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 104.80.225.205:443 tcp
US 209.197.3.8:80 tcp
DE 8.248.93.254:80 tcp

Files

N/A